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ka-Map Overview
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<h2>kaMap.js</h2>
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<h4>Summary</h4>
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No overview generated for 'kaMap.js'<BR/><BR/>
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<b>Class Summary</b>
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<td width="15%"><b><a href="_eventManager.html">_eventManager</a></b></td>
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<td width="15%"><b><a href="kaMap.html">kaMap</a></b></td>
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<code>static void</code>
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<code>
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<a href="GLOBALS.html#!s!_queueManager_execute">_queueManager_execute</a></b>( pos)
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<a href="GLOBALS.html#!s!safeParseInt">safeParseInt</a></b>( val )
</code>
<br>
special helper function to parse an integer value safely in case
it is represented in IEEE format (scientific notation).
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<pre class="sourceview"><span class="comment">/**********************************************************************
*
* $Id: overview-summary-kaMap.js.html,v 1.1 2006/03/15 15:56:58 pspencer Exp $
*
* purpose: core engine for implementing a tiled, continuous pan mapping
* engine.
*
* author: Paul Spencer (pspencer<span class="attrib">@dmsolutions</span>.ca)
*
* The original kaMap code was written by DM Solutions Group.
* bug fixes contributed by Lorenzo Becchi and Andrea Cappugi
* max_extents support by Tim Schaub
*
* TODO:
*
* - convert to prototype
* - code refactoring for simplification/speed
* - code refactoring
*
**********************************************************************
*
* Copyright (c) 2005, DM Solutions Group Inc.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included
* in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
*
**********************************************************************/</span>
<span class="comment">/**
* kaMap! events
*/</span>
var gnLastEventId = 0;
var KAMAP_ERROR = gnLastEventId ++;
var KAMAP_WARNING = gnLastEventId ++;
var KAMAP_NOTICE = gnLastEventId++;
var KAMAP_INITIALIZED = gnLastEventId ++;
var KAMAP_MAP_INITIALIZED = gnLastEventId ++;
var KAMAP_EXTENTS_CHANGED = gnLastEventId ++;
var KAMAP_SCALE_CHANGED = gnLastEventId ++;
var KAMAP_LAYERS_CHANGED = gnLastEventId ++;
var KAMAP_LAYER_STATUS_CHANGED = gnLastEventId ++;
var KAMAP_CONTEXT_MENU = gnLastEventId ++;
var KAMAP_METAEXTENTS_CHANGED = gnLastEventId++;
var KAMAP_MAP_CLICKED = gnLastEventId++;
<span class="comment">/******************************************************************************
* kaMap main class
*
* construct a new kaMap instance. Pass the id of the div to put the kaMap in
*
* this class is the main API for any application. Only use the functions
* provided by this API to ensure everything functions correctly
*
* szID - string, the id of a div to put the kaMap! into
*
*****************************************************************************/</span>
<span class="reserved">function</span> kaMap( szID ) {
<span class="reserved">this</span>.isCSS = false;
<span class="reserved">this</span>.isW3C = false;
<span class="reserved">this</span>.isIE4 = false;
<span class="reserved">this</span>.isNN4 = false;
<span class="reserved">this</span>.isIE6CSS = false;
<span class="reserved">if</span> (document.images) {
<span class="reserved">this</span>.isCSS = (document.body && document.body.style) ? true : false;
<span class="reserved">this</span>.isW3C = (<span class="reserved">this</span>.isCSS && document.getElementById) ? true : false;
<span class="reserved">this</span>.isIE4 = (<span class="reserved">this</span>.isCSS && document.all) ? true : false;
<span class="reserved">this</span>.isNN4 = (document.layers) ? true : false;
<span class="reserved">this</span>.isIE6CSS = (document.compatMode && document.compatMode.indexOf(<span class="literal">"CSS1"</span>) >= 0) ? true : false;
}
<span class="reserved">this</span>.domObj = <span class="reserved">this</span>.getRawObject( szID );
<span class="reserved">this</span>.domObj.style.overflow = <span class="literal">'hidden'</span>;
<span class="reserved">this</span>.hideLayersOnMove = false;
<span class="comment">//if true layer not checked are loaded if false aren't loaded</span>
<span class="reserved">this</span>.loadUnchecked=false;
<span class="comment">/**
* initialization states
* 0 - not initialized
* 1 - initializing
* 2 - initialized
*/</span>
<span class="reserved">this</span>.initializationState = 0;
<span class="comment">//track mouse down events</span>
<span class="reserved">this</span>.bMouseDown = false;
<span class="comment">//track last recorded mouse position</span>
<span class="reserved">this</span>.lastx = 0;
<span class="reserved">this</span>.lasty = 0;
<span class="comment">//keep a reference to the inside layer since we use it a lot</span>
<span class="reserved">this</span>.theInsideLayer = null;
<span class="comment">//viewport width and height are used in many calculations</span>
<span class="reserved">this</span>.viewportWidth = safeParseInt(<span class="reserved">this</span>.domObj.style.width);
<span class="reserved">this</span>.viewportHeight = safeParseInt(<span class="reserved">this</span>.domObj.style.height);
<span class="comment">//track amount the inside layer has moved to help in wrapping images</span>
<span class="reserved">this</span>.xOffset = 0;
<span class="reserved">this</span>.yOffset = 0;
<span class="comment">//track current origin offset value</span>
<span class="reserved">this</span>.xOrigin = 0;
<span class="reserved">this</span>.yOrigin = 0;
<span class="comment">//the name of the current map</span>
<span class="reserved">this</span>.currentMap = <span class="literal">''</span>;
<span class="comment">//the current width and height in tiles</span>
<span class="reserved">this</span>.nWide = 0;
<span class="reserved">this</span>.nHigh = 0;
<span class="comment">//current top and left are tracked when the map moves</span>
<span class="comment">//to start the map at some offset, these would be set to</span>
<span class="comment">//the appropriate pixel value.</span>
<span class="reserved">this</span>.nCurrentTop = 0; <span class="comment">//null;</span>
<span class="reserved">this</span>.nCurrentLeft = 0; <span class="comment">//null;</span>
<span class="comment">//keep a live reference to aPixel to help with caching problems - hish</span>
<span class="reserved">this</span>.aPixel = new Image(1,1);
<span class="reserved">this</span>.aPixel.src = <span class="literal">'images/a_pixel.gif'</span>;
<span class="comment">//error stack for tracking images that have failed to load</span>
<span class="reserved">this</span>.imgErrors = new Array();
<span class="comment">//an array of available maps</span>
<span class="reserved">this</span>.aMaps = new Array();
<span class="comment">//tile size and buffer size determine how many tiles to create</span>
<span class="reserved">this</span>.tileWidth = null;
<span class="reserved">this</span>.tileHeight = null;
<span class="reserved">this</span>.nBuffer = 1;
<span class="reserved">this</span>.baseURL = <span class="literal">''</span>;
<span class="comment">//size of a pixel, geographically - assumed to be square</span>
<span class="reserved">this</span>.cellSize = null;
<span class="comment">//image id counter - helps with reloading failed images</span>
<span class="reserved">this</span>.gImageID = 0;
<span class="comment">//event manager</span>
<span class="reserved">this</span>.eventManager = new _eventManager();
<span class="comment">//slider stuff</span>
<span class="reserved">this</span>.as=slideid=null;
<span class="reserved">this</span>.accelerationFactor=1;
<span class="reserved">this</span>.pixelsPerStep = 30;
<span class="reserved">this</span>.timePerStep = 25;
<span class="comment">//this is a convenience to allow redirecting the client code to a server</span>
<span class="comment">//other than the one that this file was loaded from. This may not</span>
<span class="comment">//work depending on security settings, except for loading tiles since</span>
<span class="comment">//those come directly from a php script instead of an XmlHttpRequest.</span>
<span class="comment">//</span>
<span class="comment">//by default, if this is empty, it loads from the same site as the</span>
<span class="comment">//page loaded from. If set, it should be a full http:// reference to the</span>
<span class="comment">//directory in which init.php, tile.php and the other scripts are located.</span>
<span class="reserved">this</span>.server = <span class="literal">''</span>;
<span class="comment">//similarly, this is the global initialization script called once per page</span>
<span class="comment">//load ... the result of this script tell the client what other scripts</span>
<span class="comment">//are used for the other functions</span>
<span class="reserved">this</span>.init = <span class="literal">"init.php"</span>;
<span class="comment">//these are the values that need to be initialized by the init script</span>
<span class="reserved">this</span>.tileURL = null;
<span class="reserved">this</span>.aObjects = [];
<span class="reserved">this</span>.aCanvases = [];
<span class="reserved">this</span>.layersHidden = false;
<span class="reserved">this</span>.aTools = [];
<span class="comment">/* register the known events */</span>
<span class="reserved">for</span> (var i=0; i<gnLastEventId; i++) {
<span class="reserved">this</span>.registerEventID( i );
}
<span class="reserved">this</span>.createLayers();
};
kaMap.<span class="reserved">prototype</span>.seekLayer = <span class="reserved">function</span>(doc, name) {
var theObj;
<span class="reserved">for</span> (var i = 0; i < doc.layers.length; i++) {
<span class="reserved">if</span> (doc.layers[i].name == name) {
theObj = doc.layers[i];
break;
}
<span class="comment">// dive into nested layers if necessary</span>
<span class="reserved">if</span> (doc.layers[i].document.layers.length > 0) {
theObj = <span class="reserved">this</span>.seekLayer(document.layers[i].document, name);
}
}
<span class="reserved">return</span> theObj;
};
<span class="comment">// Convert object name string or object reference</span>
<span class="comment">// into a valid element object reference</span>
kaMap.<span class="reserved">prototype</span>.getRawObject = <span class="reserved">function</span>(obj) {
var theObj;
<span class="reserved">if</span> (typeof obj == <span class="literal">"string"</span>) {
<span class="reserved">if</span> (<span class="reserved">this</span>.isW3C) {
theObj = document.getElementById(obj);
} <span class="reserved">else</span> <span class="reserved">if</span> (<span class="reserved">this</span>.isIE4) {
theObj = document.all(obj);
} <span class="reserved">else</span> <span class="reserved">if</span> (<span class="reserved">this</span>.isNN4) {
theObj = seekLayer(document, obj);
}
} <span class="reserved">else</span> {
<span class="comment">// pass through object reference</span>
theObj = obj;
}
<span class="reserved">return</span> theObj;
};
<span class="comment">// Convert object name string or object reference</span>
<span class="comment">// into a valid style (or NN4 layer) reference</span>
kaMap.<span class="reserved">prototype</span>.getObject = <span class="reserved">function</span>(obj) {
var theObj = <span class="reserved">this</span>.getRawObject(obj);
<span class="reserved">if</span> (theObj && <span class="reserved">this</span>.isCSS) {
theObj = theObj.style;
}
<span class="reserved">return</span> theObj;
};
<span class="comment">// Retrieve the rendered width of an element</span>
kaMap.<span class="reserved">prototype</span>.getObjectWidth = <span class="reserved">function</span>(obj) {
var elem = <span class="reserved">this</span>.getRawObject(obj);
var result = 0;
<span class="reserved">if</span> (elem.offsetWidth) {
result = elem.offsetWidth;
} <span class="reserved">else</span> <span class="reserved">if</span> (elem.clip && elem.clip.width) {
result = elem.clip.width;
} <span class="reserved">else</span> <span class="reserved">if</span> (elem.style && elem.style.pixelWidth) {
result = elem.style.pixelWidth;
}
<span class="reserved">return</span> parseInt(result);
};
<span class="comment">// Retrieve the rendered height of an element</span>
kaMap.<span class="reserved">prototype</span>.getObjectHeight = <span class="reserved">function</span>(obj) {
var elem = <span class="reserved">this</span>.getRawObject(obj);
var result = 0;
<span class="reserved">if</span> (elem.offsetHeight) {
result = elem.offsetHeight;
} <span class="reserved">else</span> <span class="reserved">if</span> (elem.clip && elem.clip.height) {
result = elem.clip.height;
} <span class="reserved">else</span> <span class="reserved">if</span> (elem.style && elem.style.pixelHeight) {
result = elem.style.pixelHeight;
}
<span class="reserved">return</span> parseInt(result);
};
<span class="comment">/**
* kaMap.zoomTo( lon, lat [, scale] )
*
* zoom to some geographic point (in current projection) and optionally scale
*
* lon - the x coordinate to zoom to
* lat - the y coordinate to zoom to
* scale - optional. The scale to use
*/</span>
kaMap.<span class="reserved">prototype</span>.zoomTo = <span class="reserved">function</span>( cgX, cgY ) {
var oMap = <span class="reserved">this</span>.getCurrentMap();
var inchesPerUnit = new Array(1, 12, 63360.0, 39.3701, 39370.1, 4374754);
var newScale;
var bScaleChanged = false;
<span class="reserved">if</span> (arguments.length == 3) {
newScale = arguments[2];
bScaleChanged = (newScale != <span class="reserved">this</span>.getCurrentScale())
} <span class="reserved">else</span> {
newScale = <span class="reserved">this</span>.getCurrentScale();
}
<span class="reserved">this</span>.cellSize = newScale/(oMap.resolution * inchesPerUnit[oMap.units]);
var nFactor = oMap.zoomToScale( newScale );
<span class="reserved">this</span>.setMapLayers();
var cpX = cgX / <span class="reserved">this</span>.cellSize;
var cpY = cgY / <span class="reserved">this</span>.cellSize;
var vpLeft = Math.round(cpX - <span class="reserved">this</span>.viewportWidth/2);
var vpTop = Math.round(cpY + <span class="reserved">this</span>.viewportHeight/2);
<span class="comment">//figure out which tile the center point lies on</span>
var cTileX = Math.floor(cpX/<span class="reserved">this</span>.tileWidth)*<span class="reserved">this</span>.tileWidth;
var cTileY = Math.floor(cpY/<span class="reserved">this</span>.tileHeight)*<span class="reserved">this</span>.tileHeight;
<span class="comment">//figure out how many tiles left and up we need to move to lay out from</span>
<span class="comment">//the top left and have the top/left image off screen (or partially)</span>
var nTilesLeft = Math.ceil(<span class="reserved">this</span>.viewportWidth/(2*<span class="reserved">this</span>.tileWidth))*<span class="reserved">this</span>.tileWidth;
var nTilesUp = Math.ceil(<span class="reserved">this</span>.viewportHeight/(2*<span class="reserved">this</span>.tileHeight))*<span class="reserved">this</span>.tileHeight;
<span class="reserved">this</span>.nCurrentLeft = cTileX - nTilesLeft;
<span class="reserved">this</span>.nCurrentTop = -1*(cTileY + nTilesUp);
<span class="reserved">this</span>.xOrigin = <span class="reserved">this</span>.nCurrentLeft;
<span class="reserved">this</span>.yOrigin = <span class="reserved">this</span>.nCurrentTop;
<span class="reserved">this</span>.theInsideLayer.style.left = -1*(vpLeft - <span class="reserved">this</span>.xOrigin) + <span class="literal">"px"</span>;
<span class="reserved">this</span>.theInsideLayer.style.top = (vpTop + <span class="reserved">this</span>.yOrigin) + <span class="literal">"px"</span>;
var layers = oMap.getLayers();
<span class="reserved">for</span>( var k=0; k<layers.length; k++) {
var d = layers[k].domObj;
<span class="reserved">for</span>(var j=0; j<<span class="reserved">this</span>.nHigh; j++) {
<span class="reserved">for</span>( var i=0; i<<span class="reserved">this</span>.nWide; i++) {
var img = d.childNodes[(j*<span class="reserved">this</span>.nWide)+i];
img.src = <span class="reserved">this</span>.aPixel.src;
img.style.top = (<span class="reserved">this</span>.nCurrentTop + j*<span class="reserved">this</span>.tileHeight - <span class="reserved">this</span>.yOrigin) + <span class="literal">"px"</span>;
img.style.left = (<span class="reserved">this</span>.nCurrentLeft + i*<span class="reserved">this</span>.tileWidth - <span class="reserved">this</span>.xOrigin) + <span class="literal">"px"</span>;
layers[k].setTile(img);
}
}
}
<span class="reserved">this</span>.checkWrap( );
<span class="reserved">this</span>.updateObjects();
<span class="reserved">if</span> (bScaleChanged) <span class="reserved">this</span>.triggerEvent( KAMAP_SCALE_CHANGED, <span class="reserved">this</span>.getCurrentScale() );
<span class="reserved">this</span>.triggerEvent( KAMAP_EXTENTS_CHANGED, <span class="reserved">this</span>.getGeoExtents() );
};
<span class="comment">/**
* kaMap.zoomToExtents( minx, miny, maxx, maxy )
*
* best fit zoom to extents. Center of extents will be in the center of the
* view and the extents will be contained within the view at the closest scale
* available above the scale these extents represent
*
* minx, miny, maxx, maxy - extents in units of current projection.
*/</span>
kaMap.<span class="reserved">prototype</span>.zoomToExtents = <span class="reserved">function</span>(minx, miny, maxx, maxy) {
<span class="comment">/* calculate new scale from extents and viewport, then find closest
* scale and calculate new extents from centerpoint and scale. Then
* move theInsideLayer and all the images to show that centerpoint at
* the center of the view at the given scale
*/</span>
var inchesPerUnit = new Array(1, 12, 63360.0, 39.3701, 39370.1, 4374754);
var oMap = <span class="reserved">this</span>.getCurrentMap();
<span class="comment">//the geographic center - where we want to end up</span>
var cgX = (maxx+minx)/2;
var cgY = (maxy+miny)/2;
var tmpCellSizeX = (maxx - minx)/<span class="reserved">this</span>.viewportWidth;
var tmpCellSizeY = (maxy - miny)/<span class="reserved">this</span>.viewportHeight;
var tmpCellSize = Math.max( tmpCellSizeX, tmpCellSizeY );
var tmpScale = tmpCellSize * oMap.resolution * inchesPerUnit[oMap.units];
var newScale = oMap.aScales[0];
<span class="reserved">for</span> (var i=1; i<oMap.aScales.length; i++) {
<span class="reserved">if</span> (tmpScale >= oMap.aScales[i]) {
break;
}
newScale = oMap.aScales[i];
}
<span class="comment">//now newScale has our new scale size</span>
<span class="reserved">this</span>.cellSize = newScale/(oMap.resolution * inchesPerUnit[oMap.units]);
var nFactor = oMap.zoomToScale( newScale );
<span class="reserved">this</span>.setMapLayers();
var cpX = cgX / <span class="reserved">this</span>.cellSize;
var cpY = cgY / <span class="reserved">this</span>.cellSize;
var vpLeft = Math.round(cpX - <span class="reserved">this</span>.viewportWidth/2);
var vpTop = Math.round(cpY + <span class="reserved">this</span>.viewportHeight/2);
<span class="comment">//figure out which tile the center point lies on</span>
var cTileX = Math.floor(cpX/<span class="reserved">this</span>.tileWidth)*<span class="reserved">this</span>.tileWidth;
var cTileY = Math.floor(cpY/<span class="reserved">this</span>.tileHeight)*<span class="reserved">this</span>.tileHeight;
<span class="comment">//figure out how many tiles left and up we need to move to lay out from</span>
<span class="comment">//the top left and have the top/left image off screen (or partially)</span>
var nTilesLeft = Math.ceil(<span class="reserved">this</span>.viewportWidth/(2*<span class="reserved">this</span>.tileWidth))*<span class="reserved">this</span>.tileWidth;
var nTilesUp = Math.ceil(<span class="reserved">this</span>.viewportHeight/(2*<span class="reserved">this</span>.tileHeight))*<span class="reserved">this</span>.tileHeight;
<span class="reserved">this</span>.nCurrentLeft = cTileX - nTilesLeft;
<span class="reserved">this</span>.nCurrentTop = -1*(cTileY + nTilesUp);
<span class="reserved">this</span>.xOrigin = <span class="reserved">this</span>.nCurrentLeft;
<span class="reserved">this</span>.yOrigin = <span class="reserved">this</span>.nCurrentTop;
<span class="reserved">this</span>.theInsideLayer.style.left = -1*(vpLeft - <span class="reserved">this</span>.xOrigin) + <span class="literal">"px"</span>;
<span class="reserved">this</span>.theInsideLayer.style.top = (vpTop + <span class="reserved">this</span>.yOrigin) + <span class="literal">"px"</span>;
var layers = oMap.getLayers();
<span class="reserved">for</span>( var k=0; k<layers.length; k++) {
var d = layers[k].domObj;
<span class="reserved">for</span>(var j=0; j<<span class="reserved">this</span>.nHigh; j++) {
<span class="reserved">for</span>( var i=0; i<<span class="reserved">this</span>.nWide; i++) {
var img = d.childNodes[(j*<span class="reserved">this</span>.nWide)+i];
img.src = <span class="reserved">this</span>.aPixel.src;
img.style.top = (<span class="reserved">this</span>.nCurrentTop + j*<span class="reserved">this</span>.tileHeight - <span class="reserved">this</span>.yOrigin) + <span class="literal">"px"</span>;
img.style.left = (<span class="reserved">this</span>.nCurrentLeft + i*<span class="reserved">this</span>.tileWidth - <span class="reserved">this</span>.xOrigin) + <span class="literal">"px"</span>;
layers[k].setTile(img);
}
}
}
<span class="reserved">this</span>.checkWrap( );
<span class="reserved">this</span>.updateObjects();
<span class="reserved">this</span>.triggerEvent( KAMAP_SCALE_CHANGED, <span class="reserved">this</span>.getCurrentScale() );
<span class="reserved">this</span>.triggerEvent( KAMAP_EXTENTS_CHANGED, <span class="reserved">this</span>.getGeoExtents() );
};
<span class="comment">/**
* kaMap.createDrawingCanvas( idx )
*
* create a layer on which objects can be drawn (such as point objects)
*
* idx - int, the z-index of the layer. Should be < 100 but above the map
* layers.
*/</span>
kaMap.<span class="reserved">prototype</span>.createDrawingCanvas = <span class="reserved">function</span>( idx ) {
var d = document.createElement( <span class="literal">'div'</span> );
d.style.position = <span class="literal">'absolute'</span>;
d.style.left = <span class="literal">'0px'</span>;
d.style.top = <span class="literal">'0px'</span>;
d.style.width= <span class="literal">'3000px'</span>;
d.style.height = <span class="literal">'3000px'</span>;
d.style.zIndex = idx;
<span class="reserved">this</span>.theInsideLayer.appendChild( d );
<span class="reserved">this</span>.aCanvases.push( d );
d.kaMap = <span class="reserved">this</span>;
<span class="reserved">return</span> d;
};
kaMap.<span class="reserved">prototype</span>.removeDrawingCanvas = <span class="reserved">function</span>( canvas ) {
<span class="reserved">for</span> (var i=0; i<<span class="reserved">this</span>.aCanvases.length;i++) {
<span class="reserved">if</span> (<span class="reserved">this</span>.aCanvases[i] == canvas) {
<span class="reserved">this</span>.aCanvases.splice( i, 1 );
}
}
<span class="reserved">this</span>.theInsideLayer.removeChild(canvas);
canvas.kaMap = null;
<span class="reserved">return</span> true;
};
<span class="comment">/**
* kaMap.addObjectGeo( canvas, lon, lat, obj )
*
* add an object to a drawing layer and position it at the given geographic
* position. This is defined as being in the projection of the map.
*
* TODO: possibly add ability to call a reprojection service (xhr request?) to
* convert lon/lat into the current coordinate system if not lon/lat.
*
* canvas - object, the drawing canvas to add this object to
* x - int, the x position in pixels
* y - int, the y position in pixels
* obj - object, the object to add (an img, div etc)
*
* returns true
*/</span>
kaMap.<span class="reserved">prototype</span>.addObjectGeo = <span class="reserved">function</span>( canvas, lon, lat, obj ) {
obj.lon = lon;
obj.lat = lat;
var aPix = <span class="reserved">this</span>.geoToPix( lon, lat );
<span class="reserved">return</span> <span class="reserved">this</span>.addObjectPix( canvas, aPix[0], aPix[1], obj );
};
<span class="comment">/**
* kaMap.addObjectPix( canvas, x, y, obj )
*
* add an object to the map canvas and position it at the given pixel position.
* The position should not include the xOrigin/yOrigin offsets
*
* canvas - object, the canvas to add this object to
* x - int, the x position in pixels
* y - int, the y position in pixels
* obj - object, the object to add (an img, div etc)
*
* returns true;
*/</span>
kaMap.<span class="reserved">prototype</span>.addObjectPix = <span class="reserved">function</span>( canvas, x, y, obj ) {
var xOffset = (obj.xOffset) ? obj.xOffset : 0;
var yOffset = (obj.yOffset) ? obj.yOffset : 0;
var top = (y - <span class="reserved">this</span>.yOrigin + yOffset);
var left = (x - <span class="reserved">this</span>.xOrigin + xOffset);
obj.style.position = <span class="literal">'absolute'</span>;
obj.style.top = top + <span class="literal">"px"</span>;
obj.style.left = left + <span class="literal">"px"</span>;
obj.canvas = canvas;
canvas.appendChild( obj );
<span class="reserved">this</span>.aObjects.push( obj );
<span class="reserved">return</span> true;
};
<span class="comment">/**
* kaMap.shiftObject( x, y, obj )
*
* move an object by a pixel amount
*
* x - int, the number of pixels in the x direction to move the object
* y - int, the number of pixels in the y direction to move the object
* obj - object, the object to move
*
* returns true
*/</span>
kaMap.<span class="reserved">prototype</span>.shiftObject = <span class="reserved">function</span>( x, y, obj ) {
var top = safeParseInt(obj.style.top);
var left = safeParseInt(obj.style.left);
obj.style.top = (top + y) + <span class="literal">"px"</span>;
obj.style.left = (left + x) + <span class="literal">"px"</span>;
<span class="reserved">return</span> true;
};
<span class="comment">/**
* kaMap.removeObject( obj )
*
* removes an object previously added with one of the addObjectXxx calls
*
* obj - object, an object that has been previously added, or null to remove
* all objects
*
* returns true if the object was removed, false otherwise (i.e. if it was
* never added).
*/</span>
kaMap.<span class="reserved">prototype</span>.removeObject = <span class="reserved">function</span>( obj ) {
<span class="reserved">for</span> (var i=0; i<<span class="reserved">this</span>.aObjects.length; i++) {
<span class="reserved">if</span> (<span class="reserved">this</span>.aObjects[i] == obj || obj == null) {
<span class="reserved">if</span> (!obj) {
obj = <span class="reserved">this</span>.aObjects[i];
}
<span class="reserved">if</span> (obj.canvas) {
obj.canvas.removeChild( obj );
obj.canvas = null;
}
<span class="reserved">this</span>.aObjects.splice(i,1);
<span class="reserved">return</span> true;
}
}
<span class="reserved">return</span> false;
};
<span class="comment">/**
* kaMap.centerObject( obj )
*
* slides the map to place the object at the center of the map
*
* obj - object, an object previously added to the map
*
* returns true
*/</span>
kaMap.<span class="reserved">prototype</span>.centerObject = <span class="reserved">function</span>(obj) {
var vpX = -safeParseInt(<span class="reserved">this</span>.theInsideLayer.style.left) + <span class="reserved">this</span>.viewportWidth/2;
var vpY = -safeParseInt(<span class="reserved">this</span>.theInsideLayer.style.top) + <span class="reserved">this</span>.viewportHeight/2;
var xOffset = (obj.xOffset)?obj.xOffset:0;
var yOffset = (obj.yOffset)?obj.yOffset:0;
var dx = safeParseInt(obj.style.left) - xOffset- vpX;
var dy = safeParseInt(obj.style.top) - yOffset - vpY;
<span class="reserved">this</span>.slideBy(-dx, -dy);
<span class="reserved">return</span> true;
};
<span class="comment">/**
* kaMap.geoToPix( gX, gY )
*
* convert geographic coordinates into pixel coordinates. Note this does not
* adjust for the current origin offset that is used to adjust the actual
* pixel location of the tiles and other images
*
* gX - float, the x coordinate in geographic units of the active projection
* gY - float, the y coordinate in geographic units of the active projection
*
* returns an array of pixel coordinates with element 0 being the x and element
* 1 being the y coordinate.
*/</span>
kaMap.<span class="reserved">prototype</span>.geoToPix = <span class="reserved">function</span>( gX, gY ) {
var pX = gX / <span class="reserved">this</span>.cellSize;
var pY = -1 * gY / <span class="reserved">this</span>.cellSize;
<span class="reserved">return</span> [Math.floor(pX), Math.floor(pY)];
};
<span class="comment">/**
* kaMap.pixToGeo( pX, pY [, bAdjust] )
*
* convert pixel coordinates into geographic coordinates. This can optionally
* adjust for the pixel offset by passing true as the third argument
*
* pX - int, the x coordinate in pixel units
* pY - int, the y coordinate in pixel units
*
* returns an array of geographic coordinates with element 0 being the x
* and element 1 being the y coordinate.
*/</span>
kaMap.<span class="reserved">prototype</span>.pixToGeo = <span class="reserved">function</span>( pX, pY ) {
var bAdjust = (arguments.length == 3 && arguments[2]) ? true : false;
<span class="reserved">if</span> (bAdjust) {
pX = pX + <span class="reserved">this</span>.xOrigin;
pY = pY + <span class="reserved">this</span>.yOrigin;
}
var gX = -1 * pX * <span class="reserved">this</span>.cellSize;
var gY = pY * <span class="reserved">this</span>.cellSize;
<span class="reserved">return</span> [gX, gY];
};
<span class="comment">/**
* kaMap.initialize( [szMap] )
*
* main initialization of kaMap. This must be called after page load and
* should only be called once (i.e. on page load). It does not perform
* intialization synchronously. This means that the function will return
* before initialization is complete. To determine when initialization is
* complete, the calling application must register for the KAMAP_INITIALIZED
* event.
*
* szMap - string, optional, the name of a map to initialize by default. If
* not set, use the default configuration map file.
*
* returns true
*/</span>
kaMap.<span class="reserved">prototype</span>.initialize = <span class="reserved">function</span>() {
<span class="reserved">if</span> (<span class="reserved">this</span>.initializationState == 2) {
<span class="reserved">this</span>.triggerEvent( KAMAP_ERROR, <span class="literal">'ERROR: ka-Map! is already initialized!'</span> );
<span class="reserved">return</span> false;
} <span class="reserved">else</span> <span class="reserved">if</span> (<span class="reserved">this</span>.intializationState == 1) {
<span class="reserved">this</span>.triggerEvent( KAMAP_WARNING, <span class="literal">'WARNING: ka-Map! is currently initializing ... wait for the KAMAP_INITIALIZED event to be triggered.'</span> );
<span class="reserved">return</span> false;
}
<span class="reserved">this</span>.initializationState = 1;
<span class="comment">/* call initialization script on the server */</span>
var szURL = <span class="reserved">this</span>.server+<span class="reserved">this</span>.init;
var sep = (<span class="reserved">this</span>.init.indexOf(<span class="literal">"?"</span>) == -1) ? <span class="literal">"?"</span> : <span class="literal">"&"</span>;
<span class="reserved">if</span> (arguments.length > 0 && arguments[0] != <span class="literal">''</span>) {
szURL = szURL + sep + <span class="literal">"map="</span>+ arguments[0];
sep = <span class="literal">"&"</span>;
}
<span class="reserved">if</span> (arguments.length > 1 && arguments[1] != <span class="literal">''</span>) {
szURL = szURL + sep + <span class="literal">"extents="</span>+ arguments[1];
sep = <span class="literal">"&"</span>;
}
<span class="reserved">if</span> (arguments.length > 2 && arguments[2] != <span class="literal">''</span>) {
szURL = szURL + sep + <span class="literal">"centerPoint="</span>+ arguments[2];
sep = <span class="literal">"&"</span>;
}
call(szURL, <span class="reserved">this</span>, <span class="reserved">this</span>.initializeCallback);
<span class="reserved">return</span> true;
};
<span class="comment">/**
* hidden function on callback from init.php
*/</span>
kaMap.<span class="reserved">prototype</span>.initializeCallback = <span class="reserved">function</span>( szInit ) {
<span class="comment">// szInit contains /*init*/ if it worked, or some php error otherwise</span>
<span class="reserved">if</span> (szInit.substr(0, 1) != <span class="literal">"/"</span>) {
<span class="reserved">this</span>.triggerEvent( KAMAP_ERROR, <span class="literal">'ERROR: ka-Map! initialization '</span>+
<span class="literal">'failed on the server. Message returned was:\n'</span> +
szInit);
<span class="reserved">return</span> false;
}
eval(szInit);
<span class="reserved">this</span>.triggerEvent( KAMAP_INITIALIZED );
<span class="reserved">this</span>.initializationState = 2;
};
<span class="comment">/**
* kaMap.setBackgroundColor( color )
*
* call this to set a background color for the inside layer. This color
* shows through any transparent areas of the map. This is primarily
* intended to be used by the initializeMap callback function to set the
* background to the background color in the map file.
*
* color: string, a valid HTML color string
*
* returns true;
*/</span>
kaMap.<span class="reserved">prototype</span>.setBackgroundColor = <span class="reserved">function</span>( color ) {
<span class="reserved">this</span>.domObj.style.backgroundColor = color;
<span class="reserved">return</span> true;
};
<span class="comment">/**
* hidden method of kaMap to initialize all the various layers needed by
* kaMap to draw and move the map image.
*/</span>
kaMap.<span class="reserved">prototype</span>.createLayers = <span class="reserved">function</span>() {
<span class="reserved">this</span>.theInsideLayer = document.createElement(<span class="literal">'div'</span>);
<span class="reserved">this</span>.theInsideLayer.id = <span class="literal">'theInsideLayer'</span>;
<span class="reserved">this</span>.theInsideLayer.style.position = <span class="literal">'absolute'</span>;
<span class="reserved">this</span>.theInsideLayer.style.left = <span class="literal">'0px'</span>;
<span class="reserved">this</span>.theInsideLayer.style.top = <span class="literal">'0px'</span>;
<span class="reserved">this</span>.theInsideLayer.style.zIndex = <span class="literal">'1'</span>;
<span class="reserved">this</span>.theInsideLayer.kaMap = <span class="reserved">this</span>;
<span class="reserved">if</span> (<span class="reserved">this</span>.currentTool) {
<span class="reserved">this</span>.theInsideLayer.style.cursor = <span class="reserved">this</span>.currentTool.cursor;
}
<span class="reserved">this</span>.domObj.appendChild(<span class="reserved">this</span>.theInsideLayer);
<span class="reserved">this</span>.domObj.kaMap = <span class="reserved">this</span>;
<span class="reserved">this</span>.theInsideLayer.onmousedown = kaMap_onmousedown;
<span class="reserved">this</span>.theInsideLayer.onmouseup = kaMap_onmouseup;
<span class="reserved">this</span>.theInsideLayer.onmousemove = kaMap_onmousemove;
<span class="reserved">this</span>.theInsideLayer.onmouseover = kaMap_onmouseover;
<span class="reserved">this</span>.domObj.onmouseout = kaMap_onmouseout;
<span class="reserved">this</span>.theInsideLayer.onkeypress = kaMap_onkeypress;
<span class="reserved">this</span>.theInsideLayer.ondblclick = kaMap_ondblclick;
<span class="reserved">this</span>.theInsideLayer.oncontextmenu = kaMap_oncontextmenu;
<span class="reserved">this</span>.theInsideLayer.onmousewheel = kaMap_onmousewheel;
<span class="reserved">if</span> (window.addEventListener &&
navigator.product && navigator.product == <span class="literal">"Gecko"</span>) {
<span class="reserved">this</span>.domObj.addEventListener( <span class="literal">"DOMMouseScroll"</span>, kaMap_onmousewheel, false );
}
<span class="comment">//this is to prevent problems in IE</span>
<span class="reserved">this</span>.theInsideLayer.ondragstart = new Function([], <span class="literal">'var e=e?e:event;e.cancelBubble=true;e.returnValue=false;return false;'</span>);
};
<span class="comment">/**
* internal function
* update the layer URLs based on their current positions
*/</span>
kaMap.<span class="reserved">prototype</span>.initializeLayers = <span class="reserved">function</span>(nFactor) {
var deltaMouseX = <span class="reserved">this</span>.nCurrentLeft + safeParseInt(<span class="reserved">this</span>.theInsideLayer.style.left) - <span class="reserved">this</span>.xOrigin;
var deltaMouseY = <span class="reserved">this</span>.nCurrentTop + safeParseInt(<span class="reserved">this</span>.theInsideLayer.style.top) - <span class="reserved">this</span>.yOrigin;
var vpTop = <span class="reserved">this</span>.nCurrentTop - deltaMouseY;
var vpLeft = <span class="reserved">this</span>.nCurrentLeft - deltaMouseX;
var vpCenterX = vpLeft + <span class="reserved">this</span>.viewportWidth/2;
var vpCenterY = vpTop + <span class="reserved">this</span>.viewportHeight/2;
var currentTileX = Math.floor(vpCenterX/<span class="reserved">this</span>.tileWidth)*<span class="reserved">this</span>.tileWidth;
var currentTileY = Math.floor(vpCenterY/<span class="reserved">this</span>.tileHeight)*<span class="reserved">this</span>.tileHeight;
var tileDeltaX = currentTileX - <span class="reserved">this</span>.nCurrentLeft;
var tileDeltaY = currentTileY - <span class="reserved">this</span>.nCurrentTop;
var newVpCenterX = vpCenterX * nFactor;
var newVpCenterY = vpCenterY * nFactor;
var newTileX = Math.floor(newVpCenterX/<span class="reserved">this</span>.tileWidth) * <span class="reserved">this</span>.tileWidth;
var newTileY = Math.floor(newVpCenterY/<span class="reserved">this</span>.tileHeight) * <span class="reserved">this</span>.tileHeight;
var newCurrentLeft = newTileX - tileDeltaX;
var newCurrentTop = newTileY - tileDeltaY;
<span class="reserved">this</span>.nCurrentLeft = newCurrentLeft;
<span class="reserved">this</span>.nCurrentTop = newCurrentTop;
var newTilLeft = -newVpCenterX + <span class="reserved">this</span>.viewportWidth/2;
var newTilTop = -newVpCenterY + <span class="reserved">this</span>.viewportHeight/2;
var xOldOrigin = <span class="reserved">this</span>.xOrigin;
var yOldOrigin = <span class="reserved">this</span>.yOrigin;
<span class="reserved">this</span>.xOrigin = <span class="reserved">this</span>.nCurrentLeft;
<span class="reserved">this</span>.yOrigin = <span class="reserved">this</span>.nCurrentTop;
<span class="reserved">this</span>.theInsideLayer.style.left = (newTilLeft + <span class="reserved">this</span>.xOrigin) + <span class="literal">"px"</span>;
<span class="reserved">this</span>.theInsideLayer.style.top = (newTilTop + <span class="reserved">this</span>.yOrigin) + <span class="literal">"px"</span>;
var layers = <span class="reserved">this</span>.aMaps[<span class="reserved">this</span>.currentMap].getLayers();
<span class="reserved">for</span>( var k=0; k<layers.length; k++) {
var d = layers[k].domObj;
<span class="reserved">for</span>(var j=0; j<<span class="reserved">this</span>.nHigh; j++) {
<span class="reserved">for</span>( var i=0; i<<span class="reserved">this</span>.nWide; i++) {
var img = d.childNodes[(j*<span class="reserved">this</span>.nWide)+i];
img.src = <span class="reserved">this</span>.aPixel.src;
img.style.top = (<span class="reserved">this</span>.nCurrentTop + j*<span class="reserved">this</span>.tileHeight - <span class="reserved">this</span>.yOrigin) + <span class="literal">"px"</span>;
img.style.left = (<span class="reserved">this</span>.nCurrentLeft + i*<span class="reserved">this</span>.tileWidth - <span class="reserved">this</span>.xOrigin) + <span class="literal">"px"</span>;
layers[k].setTile(img);
}
}
}
<span class="reserved">this</span>.checkWrap();
<span class="reserved">this</span>.updateObjects();
};
<span class="comment">/***************************************
* internal function adedd by cappu
* use to paint a layer calculating tile
* position for current exten and scale
* and calling the layer.seTile
***************************************/</span>
kaMap.<span class="reserved">prototype</span>.paintLayer = <span class="reserved">function</span>(l) {
var d = l.domObj;
<span class="reserved">for</span>(var j=0; j<<span class="reserved">this</span>.nHigh; j++) {
<span class="reserved">for</span>( var i=0; i<<span class="reserved">this</span>.nWide; i++) {
var img = d.childNodes[(j*<span class="reserved">this</span>.nWide)+i];
<span class="comment">// img.src = this.aPixel.src;</span>
img.style.top = (<span class="reserved">this</span>.nCurrentTop + j*<span class="reserved">this</span>.tileHeight - <span class="reserved">this</span>.yOrigin) + <span class="literal">"px"</span>;
img.style.left = (<span class="reserved">this</span>.nCurrentLeft + i*<span class="reserved">this</span>.tileWidth - <span class="reserved">this</span>.xOrigin) + <span class="literal">"px"</span>;
l.setTile(img);
}
}
<span class="reserved">this</span>.checkWrap();
};
<span class="comment">/* kaMap.updateObjects
* call this after any major change to the state of kaMap including after
* a zoomTo, zoomToExtents, etc.
*/</span>
kaMap.<span class="reserved">prototype</span>.updateObjects = <span class="reserved">function</span>() {
<span class="reserved">for</span> (var i=0; i<<span class="reserved">this</span>.aObjects.length;i++) {
var obj = <span class="reserved">this</span>.aObjects[i];
var xOffset = (obj.xOffset) ? obj.xOffset : 0;
var yOffset = (obj.yOffset) ? obj.yOffset : 0;
var aPix = <span class="reserved">this</span>.geoToPix( obj.lon, obj.lat );
var top = (aPix[1] - <span class="reserved">this</span>.yOrigin + yOffset);
var left = (aPix[0] - <span class="reserved">this</span>.xOrigin + xOffset);
obj.style.top = top + <span class="literal">"px"</span>;
obj.style.left = left + <span class="literal">"px"</span>;
}
};
<span class="comment">/**
* kaMap.resize()
*
* called when the viewport layer changes size. It is the responsibility
* of the user of this API to track changes in viewport size and call this
* function to update the map
*/</span>
kaMap.<span class="reserved">prototype</span>.resize = <span class="reserved">function</span>( ) {
<span class="reserved">if</span> (<span class="reserved">this</span>.initializationState != 2) {
<span class="reserved">return</span> false;
}
var newViewportWidth = <span class="reserved">this</span>.getObjectWidth(<span class="reserved">this</span>.domObj);
var newViewportHeight = <span class="reserved">this</span>.getObjectHeight(<span class="reserved">this</span>.domObj);
<span class="reserved">if</span> (<span class="reserved">this</span>.viewportWidth == null) {
<span class="reserved">this</span>.theInsideLayer.style.top = (-1*<span class="reserved">this</span>.nCurrentTop + <span class="reserved">this</span>.yOrigin) + <span class="literal">"px"</span>;
<span class="reserved">this</span>.theInsideLayer.style.left = (-1*<span class="reserved">this</span>.nCurrentLeft + <span class="reserved">this</span>.xOrigin) + <span class="literal">"px"</span>;
<span class="reserved">this</span>.viewportWidth = newViewportWidth;
<span class="reserved">this</span>.viewportHeight = newViewportHeight;
}
var newWide = Math.ceil((newViewportWidth / <span class="reserved">this</span>.tileWidth) + 2*<span class="reserved">this</span>.nBuffer);
var newHigh = Math.ceil((newViewportHeight / <span class="reserved">this</span>.tileHeight) + 2*<span class="reserved">this</span>.nBuffer);
<span class="reserved">this</span>.viewportWidth = newViewportWidth;
<span class="reserved">this</span>.viewportHeight = newViewportHeight;
<span class="reserved">if</span> (<span class="reserved">this</span>.nHigh == 0 && <span class="reserved">this</span>.nWide == 0) {
<span class="reserved">this</span>.nWide = newWide;
}
<span class="reserved">while</span> (<span class="reserved">this</span>.nHigh < newHigh) {
<span class="reserved">this</span>.appendRow();
}
<span class="reserved">while</span> (<span class="reserved">this</span>.nHigh > newHigh && newHigh > 3) {
<span class="reserved">this</span>.removeRow();
}
<span class="reserved">while</span> (<span class="reserved">this</span>.nWide < newWide) {
<span class="reserved">this</span>.appendColumn();
}
<span class="reserved">while</span> (<span class="reserved">this</span>.nWide > newWide && newWide > 3) {
<span class="reserved">this</span>.removeColumn();
}
<span class="comment">//create image don't call layer.set tile so i need to do that!</span>
var map = <span class="reserved">this</span>.getCurrentMap();
var layers =map.getLayers();
<span class="reserved">for</span>(i=0;i<layers.length;i++) {
layers[i].setTileLayer();
}
<span class="reserved">this</span>.triggerEvent( KAMAP_EXTENTS_CHANGED, <span class="reserved">this</span>.getGeoExtents() );
<span class="reserved">this</span>.triggerEvent( KAMAP_EXTENTS_CHANGED, <span class="reserved">this</span>.getGeoExtents() );
};
<span class="comment">/**
* internal function to create images for map tiles
*
* top - integer, the top of this image in pixels
* left - integer, the left of this image in pixels
* obj - object, the layer in which this image will reside
*/</span>
kaMap.<span class="reserved">prototype</span>.createImage = <span class="reserved">function</span>( top, left, obj ) {
var img = document.createElement(<span class="literal">'img'</span>);
img.src=<span class="reserved">this</span>.aPixel.src;
img.width=<span class="reserved">this</span>.tileWidth;
img.height=<span class="reserved">this</span>.tileHeight;
<span class="comment">//first for firefox, rest for IE :(</span>
img.setAttribute(<span class="literal">'style'</span>, <span class="literal">'position:absolute; top:'</span>+top+<span class="literal">'px; left:'</span>+left+<span class="literal">'px;'</span> );
img.style.position = <span class="literal">'absolute'</span>;
img.style.top = (top - <span class="reserved">this</span>.yOrigin)+<span class="literal">'px'</span>;
img.style.left = (left - <span class="reserved">this</span>.xOrigin)+<span class="literal">'px'</span>;
img.style.width = <span class="reserved">this</span>.tileWidth + <span class="literal">"px"</span>;
img.style.height = <span class="reserved">this</span>.tileHeight + <span class="literal">"px"</span>;
img.style.visibility = <span class="literal">'hidden'</span>;
img.galleryimg = <span class="literal">"no"</span>; <span class="comment">//turn off image toolbar in IE</span>
img.onerror = kaMap_imgOnError;
img.onload = kaMap_imgOnLoad;
img.errorCount = 0;
img.id = <span class="literal">"i"</span> + <span class="reserved">this</span>.gImageID;
img.layer = obj;
img.kaMap = <span class="reserved">this</span>;
<span class="reserved">this</span>.gImageID = <span class="reserved">this</span>.gImageID + 1;
<span class="reserved">return</span> img;
};
kaMap.<span class="reserved">prototype</span>.resetTile = <span class="reserved">function</span>( id, bForce ) {
var img = <span class="reserved">this</span>.DHTMLapi.getRawObject(id);
<span class="reserved">if</span> (img.layer) {
img.layer.setTile(<span class="reserved">this</span>, bForce);
}
};
kaMap.<span class="reserved">prototype</span>.reloadImage = <span class="reserved">function</span>(id) {
};
kaMap.<span class="reserved">prototype</span>.resetImage = <span class="reserved">function</span>(id) {
};
<span class="comment">/**
* internal function to handle images that fail to load
*/</span>
kaMap_imgOnError = <span class="reserved">function</span>(e) {
<span class="reserved">if</span> (<span class="reserved">this</span>.layer) {
<span class="reserved">this</span>.layer.setTile(<span class="reserved">this</span>, true);
}
};
<span class="comment">/**
* internal function to track images as they finish loading.
*/</span>
kaMap_imgOnLoad = <span class="reserved">function</span>(e) {
<span class="reserved">this</span>.style.visibility = <span class="literal">'visible'</span>;
};
<span class="comment">/**
* internal function to append a row of images to each of the layers
*
* this function is used when the viewport is resized
* modified by cappu can take a single layer as input
*/</span>
kaMap.<span class="reserved">prototype</span>.appendRow = <span class="reserved">function</span>(layer) {
<span class="reserved">if</span> (<span class="reserved">this</span>.nWide == 0) {
<span class="reserved">return</span>;
}
var layers = null;
<span class="reserved">if</span>(arguments.length==1) {
layers = Array(layer);
} <span class="reserved">else</span> {
layers = <span class="reserved">this</span>.aMaps[<span class="reserved">this</span>.currentMap].getLayers();
}
<span class="reserved">for</span>( var i=0; i<layers.length; i++) {
var obj = layers[i].domObj;
<span class="reserved">for</span> (var j=0; j<<span class="reserved">this</span>.nWide; j++) {
var top = <span class="reserved">this</span>.nCurrentTop + (<span class="reserved">this</span>.nHigh * <span class="reserved">this</span>.tileHeight);
var left = <span class="reserved">this</span>.nCurrentLeft + (j * <span class="reserved">this</span>.tileWidth);
var img = <span class="reserved">this</span>.createImage( top, left, layers[i] );
<span class="comment">//hack around IE problem with clipping layers when a filter is</span>
<span class="comment">//active</span>
<span class="reserved">if</span> (<span class="reserved">this</span>.isIE4) {
img.style.filter = <span class="literal">"Alpha(opacity="</span>+layers[i].opacity+<span class="literal">")"</span>;
}
obj.appendChild( img );
}
}
<span class="reserved">this</span>.nHigh = <span class="reserved">this</span>.nHigh + 1;
};
<span class="comment">/**
* internal function to append a column of images to each of the layers
*
* this function is used when the viewport is resized
* modified by cappu can take a single layer as input
*/</span>
kaMap.<span class="reserved">prototype</span>.appendColumn = <span class="reserved">function</span>(layer) {
<span class="reserved">if</span> (<span class="reserved">this</span>.nHigh == 0) {
<span class="reserved">return</span>;
}
var layers = null;
<span class="reserved">if</span>(arguments.length==1) {
layers = Array(layer);
} <span class="reserved">else</span> {
layers = <span class="reserved">this</span>.aMaps[<span class="reserved">this</span>.currentMap].getLayers();
}
<span class="reserved">for</span>( var i=0; i<layers.length; i++) {
var obj = layers[i].domObj;
<span class="reserved">for</span>(var j=<span class="reserved">this</span>.nHigh-1; j>=0; j--) {
var top = <span class="reserved">this</span>.nCurrentTop + (j * <span class="reserved">this</span>.tileHeight);
var left = <span class="reserved">this</span>.nCurrentLeft + (<span class="reserved">this</span>.nWide * <span class="reserved">this</span>.tileWidth);
var img = <span class="reserved">this</span>.createImage( top, left, layers[i] );
<span class="comment">//hack around IE problem with clipping layers when a filter is</span>
<span class="comment">//active</span>
<span class="reserved">if</span> (<span class="reserved">this</span>.isIE4) {
img.style.filter = <span class="literal">"Alpha(opacity="</span>+layers[i].opacity+<span class="literal">")"</span>;
}
<span class="reserved">if</span> (j < <span class="reserved">this</span>.nHigh-1) {
obj.insertBefore(img, obj.childNodes[((j+1)*<span class="reserved">this</span>.nWide)]);
} <span class="reserved">else</span> {
obj.appendChild(img);
}
}
}
<span class="reserved">this</span>.nWide = <span class="reserved">this</span>.nWide + 1;
};
<span class="comment">/**
* internal function to remove a column of images to each of the layers
*
* this function is used when the viewport is resized
* modified by cappu can take a single layer as input
*/</span>
kaMap.<span class="reserved">prototype</span>.removeColumn = <span class="reserved">function</span>(layer) {
<span class="reserved">if</span> (<span class="reserved">this</span>.nWide < 3) {
<span class="reserved">return</span>;
}
var layers = null;
<span class="reserved">if</span>(arguments.length==1) {
layers = Array(layer);
} <span class="reserved">else</span> {
layers = <span class="reserved">this</span>.aMaps[<span class="reserved">this</span>.currentMap].getLayers();
}
<span class="reserved">for</span>( var i=0; i<layers.length; i++) {
var d = layers[i].domObj;
<span class="reserved">for</span>(var j=<span class="reserved">this</span>.nHigh - 1; j >= 0; j--) {
var img = d.childNodes[((j+1)*<span class="reserved">this</span>.nWide)-1];
d.removeChild( img );
<span class="comment">//attempt to prevent memory leaks</span>
img.onload = null;
img.onerror = null;
}
}
<span class="reserved">this</span>.nWide = <span class="reserved">this</span>.nWide - 1;
};
<span class="comment">/**
* internal function to remove a row of images to each of the layers
*
* this function is used when the viewport is resized
* modified by cappu can take a single layer as input
*/</span>
kaMap.<span class="reserved">prototype</span>.removeRow = <span class="reserved">function</span>(layer) {
<span class="reserved">if</span> (<span class="reserved">this</span>.nHigh < 3) {
<span class="reserved">return</span>;
}
var layers = null;
<span class="reserved">if</span>(arguments.length==1) {
layers = Array(layer);
} <span class="reserved">else</span> {
layers = <span class="reserved">this</span>.aMaps[<span class="reserved">this</span>.currentMap].getLayers();
}
<span class="reserved">for</span>( var i=0; i<layers.length; i++) {
var d = layers[i].domObj;
<span class="reserved">for</span>(var j=<span class="reserved">this</span>.nWide - 1; j >= 0; j--) {
var img = d.childNodes[((<span class="reserved">this</span>.nHigh-1)*<span class="reserved">this</span>.nWide)+j];
d.removeChild( img );
<span class="comment">//attempt to prevent memory leaks</span>
img.onload = null;
img.onerror = null;
}
}
<span class="reserved">this</span>.nHigh = <span class="reserved">this</span>.nHigh - 1;
};
kaMap.<span class="reserved">prototype</span>.hideLayers = <span class="reserved">function</span>() {
<span class="reserved">if</span> (!<span class="reserved">this</span>.hideLayersOnMove) {
<span class="reserved">return</span>;
}
<span class="reserved">if</span> (<span class="reserved">this</span>.layersHidden) {
<span class="reserved">return</span>;
}
var layers = <span class="reserved">this</span>.aMaps[<span class="reserved">this</span>.currentMap].getLayers();
<span class="reserved">for</span>( var i=0; i<layers.length; i++) {
layers[i]._visible = layers[i].visible;
<span class="reserved">if</span> (layers[i].name != <span class="literal">'__base__'</span>) {
layers[i].setVisibility( false );
}
}
<span class="reserved">for</span>( var i = 0; i < <span class="reserved">this</span>.aCanvases.length; i++) {
<span class="reserved">this</span>.aCanvases[i].style.visibility = <span class="literal">'hidden'</span>;
<span class="reserved">this</span>.aCanvases[i].style.display = <span class="literal">'none'</span>;
}
<span class="reserved">this</span>.layersHidden = true;
};
kaMap.<span class="reserved">prototype</span>.showLayers = <span class="reserved">function</span>() {
<span class="reserved">if</span> (!<span class="reserved">this</span>.hideLayersOnMove) {
<span class="reserved">return</span>;
}
<span class="reserved">if</span> (!<span class="reserved">this</span>.layersHidden) {
<span class="reserved">return</span>;
}
var layers = <span class="reserved">this</span>.aMaps[<span class="reserved">this</span>.currentMap].getLayers();
<span class="reserved">for</span>( var i=0; i<layers.length; i++) {
layers[i].setVisibility( layers[i]._visible );
}
<span class="reserved">for</span>( var i = 0; i < <span class="reserved">this</span>.aCanvases.length; i++) {
<span class="reserved">this</span>.aCanvases[i].style.visibility = <span class="literal">'visible'</span>;
<span class="reserved">this</span>.aCanvases[i].style.display = <span class="literal">'block'</span>;
}
<span class="reserved">this</span>.layersHidden = false;
};
<span class="comment">/**
* move the map by a certain amount
*/</span>
kaMap.<span class="reserved">prototype</span>.moveBy = <span class="reserved">function</span>( x, y ) {
var til = <span class="reserved">this</span>.theInsideLayer;
til.style.top = (safeParseInt(til.style.top)+y) + <span class="literal">'px'</span>;
til.style.left = (safeParseInt(til.style.left)+x )+ <span class="literal">'px'</span>;
<span class="reserved">this</span>.checkWrap();
};
<span class="comment">/**
* slide the map by a certain amount
*/</span>
kaMap.<span class="reserved">prototype</span>.slideBy = <span class="reserved">function</span>(x,y) {
<span class="reserved">if</span> (<span class="reserved">this</span>.slideid!=null) {
goQueueManager.dequeue( <span class="reserved">this</span>.slideid );
}
<span class="reserved">this</span>.as = [];
var absX = Math.abs(x);
var absY = Math.abs(y);
var signX = x/absX;
var signY = y/absY;
var distance = absX>absY?absX:absY;
var steps = Math.floor(distance/<span class="reserved">this</span>.pixelsPerStep);
var dx = dy = 0;
<span class="reserved">if</span> (steps > 0) {
dx = (x)/(steps*<span class="reserved">this</span>.pixelsPerStep);
dy = (y)/(steps*<span class="reserved">this</span>.pixelsPerStep);
}
var remainderX = x - dx*steps*<span class="reserved">this</span>.pixelsPerStep;
var remainderY = y - dy*steps*<span class="reserved">this</span>.pixelsPerStep;
var px=py=0;
var curspeed=<span class="reserved">this</span>.accelerationFactor;
var i=0;
<span class="reserved">while</span>(i<steps) {
<span class="reserved">if</span> (i>0) {
px+=<span class="reserved">this</span>.as[i-1][0];
py+=<span class="reserved">this</span>.as[i-1][1];
}
var cx = px+Math.round(dx*<span class="reserved">this</span>.pixelsPerStep);
var cy = py+Math.round(dy*<span class="reserved">this</span>.pixelsPerStep);
<span class="reserved">this</span>.as[i]=new Array(cx-px,cy-py);
i++;
}
<span class="reserved">if</span> (remainderX != 0 || remainderY != 0) {
<span class="reserved">this</span>.as[i] = [remainderX, remainderY];
}
<span class="reserved">this</span>.hideLayers();
<span class="reserved">this</span>.slideid=goQueueManager.enqueue(<span class="reserved">this</span>.timePerStep,<span class="reserved">this</span>,<span class="reserved">this</span>.slide,[0]);
};
<span class="comment">/**
* handle individual movement within a slide
*/</span>
kaMap.<span class="reserved">prototype</span>.slide = <span class="reserved">function</span>(pos) {
<span class="reserved">if</span> (pos>=<span class="reserved">this</span>.as.length) {
<span class="reserved">this</span>.as=slideid=null;
<span class="reserved">this</span>.showLayers();
<span class="reserved">this</span>.triggerEvent( KAMAP_EXTENTS_CHANGED, <span class="reserved">this</span>.getGeoExtents() );
<span class="reserved">return</span>;
}
<span class="reserved">this</span>.moveBy( <span class="reserved">this</span>.as[pos][0], <span class="reserved">this</span>.as[pos][1] );
pos ++;
<span class="reserved">this</span>.slideid=goQueueManager.enqueue(<span class="reserved">this</span>.timePerStep,<span class="reserved">this</span>,<span class="reserved">this</span>.slide,[ pos]);
};
<span class="comment">/**
* internal function to handle various events that are passed to the
* current tool
*/</span>
kaMap_onkeypress = <span class="reserved">function</span>( e ) {
<span class="reserved">if</span> (<span class="reserved">this</span>.kaMap.currentTool) {
<span class="reserved">this</span>.kaMap.currentTool.onkeypress( e );
}
};
kaMap_onmousemove = <span class="reserved">function</span>( e ) {
e = (e)?e:((event)?event:null);
<span class="reserved">if</span> (e.button==2) {
<span class="reserved">this</span>.kaMap.triggerEvent( KAMAP_CONTEXT_MENU );
}
<span class="reserved">if</span> (<span class="reserved">this</span>.kaMap.currentTool) {
<span class="reserved">this</span>.kaMap.currentTool.onmousemove( e );
}
};
kaMap_onmousedown = <span class="reserved">function</span>( e ) {
<span class="reserved">if</span> (<span class="reserved">this</span>.kaMap.currentTool) {
<span class="reserved">this</span>.kaMap.currentTool.onmousedown( e );
}
};
kaMap_onmouseup = <span class="reserved">function</span>( e ) {
<span class="reserved">if</span> (<span class="reserved">this</span>.kaMap.currentTool) {
<span class="reserved">this</span>.kaMap.currentTool.onmouseup( e );
}
};
kaMap_onmouseover = <span class="reserved">function</span>( e ) {
<span class="reserved">if</span> (<span class="reserved">this</span>.kaMap.currentTool) {
<span class="reserved">this</span>.kaMap.currentTool.onmouseover( e );
}
};
kaMap_onmouseout = <span class="reserved">function</span>( e ) {
<span class="reserved">if</span> (<span class="reserved">this</span>.kaMap.currentTool) {
<span class="reserved">this</span>.kaMap.currentTool.onmouseout( e );
}
};
kaMap_oncontextmenu = <span class="reserved">function</span>( e ) {
e = e?e:event;
<span class="reserved">if</span> (e.preventDefault) {
e.preventDefault();
}
<span class="reserved">return</span> false;
};
kaMap_ondblclick = <span class="reserved">function</span>( e ) {
<span class="reserved">if</span> (<span class="reserved">this</span>.kaMap.currentTool) {
<span class="reserved">this</span>.kaMap.currentTool.ondblclick( e );
}
};
kaMap_onmousewheel = <span class="reserved">function</span>( e ) {
<span class="reserved">if</span> (<span class="reserved">this</span>.kaMap.currentTool) {
<span class="reserved">this</span>.kaMap.currentTool.onmousewheel( e );
}
};
kaMap.<span class="reserved">prototype</span>.cancelEvent = <span class="reserved">function</span>(e) {
e = (e)?e:((event)?event:null);
e.returnValue = false;
<span class="reserved">if</span> (e.preventDefault) {
e.preventDefault();
}
<span class="reserved">return</span> false;
};
kaMap.<span class="reserved">prototype</span>.registerTool = <span class="reserved">function</span>( toolObj ) {
<span class="reserved">this</span>.aTools.push( toolObj );
};
kaMap.<span class="reserved">prototype</span>.activateTool = <span class="reserved">function</span>( toolObj ) {
<span class="reserved">if</span> (<span class="reserved">this</span>.currentTool) {
<span class="reserved">this</span>.currentTool.deactivate();
}
<span class="reserved">this</span>.currentTool = toolObj;
<span class="reserved">if</span> (<span class="reserved">this</span>.theInsideLayer) {
<span class="reserved">this</span>.setCursor(<span class="reserved">this</span>.currentTool.cursor);
}
};
kaMap.<span class="reserved">prototype</span>.deactivateTool = <span class="reserved">function</span>( toolObj ) {
<span class="reserved">if</span> (<span class="reserved">this</span>.currentTool == toolObj) {
<span class="reserved">this</span>.currentTool = null;
}
<span class="reserved">if</span> (<span class="reserved">this</span>.theInsideLayer) {
<span class="reserved">this</span>.theInsideLayer.style.cursor = <span class="literal">'auto'</span>;
}
};
<span class="comment">/*
* inspired by code in WindowManager.js
* Copyright 2005 MetaCarta, Inc., released under the BSD License
*/</span>
kaMap.<span class="reserved">prototype</span>.setCursor = <span class="reserved">function</span>(cursor) {
<span class="reserved">if</span> (cursor && cursor.length && typeof cursor == <span class="literal">'object'</span>) {
<span class="reserved">for</span> (var i = 0; i < cursor.length; i++) {
<span class="reserved">this</span>.theInsideLayer.style.cursor = cursor[i];
<span class="reserved">if</span> (<span class="reserved">this</span>.theInsideLayer.style.cursor == cursor[i]) {
break;
}
}
} <span class="reserved">else</span> <span class="reserved">if</span> (typeof cursor == <span class="literal">'string'</span>) {
<span class="reserved">this</span>.theInsideLayer.style.cursor = cursor;
} <span class="reserved">else</span> {
<span class="reserved">this</span>.theInsideLayer.style.cursor = <span class="literal">'auto'</span>;
}
};
<span class="comment">/**
* internal function to check if images need to be wrapped
*/</span>
kaMap.<span class="reserved">prototype</span>.checkWrap = <span class="reserved">function</span>() {
var bWrapped = false;
<span class="comment">// adjust theInsideLayer so it doesn't show more than maxExtents (if set)</span>
<span class="reserved">this</span>.checkMaxExtents();
<span class="reserved">this</span>.xOffset = safeParseInt(<span class="reserved">this</span>.theInsideLayer.style.left) + <span class="reserved">this</span>.nCurrentLeft - <span class="reserved">this</span>.xOrigin;
<span class="reserved">this</span>.yOffset = safeParseInt(<span class="reserved">this</span>.theInsideLayer.style.top) + <span class="reserved">this</span>.nCurrentTop - <span class="reserved">this</span>.yOrigin;
<span class="reserved">while</span> (<span class="reserved">this</span>.xOffset > 0) {
<span class="reserved">this</span>.wrapR2L();
bWrapped = true;
}
<span class="reserved">while</span> (<span class="reserved">this</span>.xOffset < -(<span class="reserved">this</span>.nBuffer*<span class="reserved">this</span>.tileWidth)) {
<span class="reserved">this</span>.wrapL2R();
bWrapped = true;
}
<span class="reserved">while</span> (<span class="reserved">this</span>.yOffset > -(<span class="reserved">this</span>.nBuffer*<span class="reserved">this</span>.tileHeight)) {
<span class="reserved">this</span>.wrapB2T();
bWrapped = true;
}
<span class="reserved">while</span> (<span class="reserved">this</span>.yOffset < -(2*<span class="reserved">this</span>.nBuffer*<span class="reserved">this</span>.tileHeight)) {
<span class="reserved">this</span>.wrapT2B();
bWrapped = true;
}
var layer = <span class="reserved">this</span>.aMaps[<span class="reserved">this</span>.currentMap].aLayers[0].domObj;
var img = layer.childNodes[0].style;
<span class="reserved">this</span>.nCurrentTop = safeParseInt(img.top) + <span class="reserved">this</span>.yOrigin;
<span class="reserved">this</span>.nCurrentLeft = safeParseInt(img.left) + <span class="reserved">this</span>.xOrigin;
<span class="reserved">if</span> (bWrapped) {
<span class="reserved">this</span>.triggerEvent( KAMAP_METAEXTENTS_CHANGED, <span class="reserved">this</span>.getMetaExtents() );
}
};
<span class="comment">/**
* kaMap.checkMaxExtents()
*
* For maps with maxExtent set, this function adjusts the position of
* theInsideLayer so it never shows more than the maximum extent specified
* in the mapfile. Called from kaMap.checkWrap() since that is called
* with all movement of theInsideLayer
*
* Added by tschaub
*/</span>
kaMap.<span class="reserved">prototype</span>.checkMaxExtents = <span class="reserved">function</span>() {
var maxExtents = <span class="reserved">this</span>.getCurrentMap().maxExtents;
<span class="reserved">if</span> (maxExtents.length == 4) {
<span class="reserved">if</span> ((maxExtents[0] >= maxExtents[2]) || (maxExtents[1] >= maxExtents[3])) {
<span class="comment">// fail silently</span>
<span class="reserved">return</span> false;
}
var geoExtents = <span class="reserved">this</span>.getGeoExtents();
var hPixelAdjustment = 0;
var vPixelAdjustment = 0;
<span class="comment">// check left and right</span>
<span class="reserved">if</span> (geoExtents[0] < maxExtents[0]) {
<span class="comment">// extra on right</span>
hPixelAdjustment = Math.round((maxExtents[0] - geoExtents[0]) / <span class="reserved">this</span>.cellSize);
}
<span class="reserved">if</span> (geoExtents[2] > maxExtents[2]) {
<span class="comment">// extra on left</span>
<span class="reserved">if</span>(hPixelAdjustment != 0)
{
<span class="comment">// if both left and right are over, split the difference</span>
hPixelAdjustment += Math.round((maxExtents[2] - geoExtents[2]) / <span class="reserved">this</span>.cellSize);
hPixelAdjustment /= 2;
} <span class="reserved">else</span> {
hPixelAdjustment += Math.round((maxExtents[2] - geoExtents[2]) / <span class="reserved">this</span>.cellSize);
}
}
<span class="comment">// check if horizontal adjustment is needed</span>
<span class="reserved">if</span>(hPixelAdjustment != 0) {
<span class="reserved">this</span>.theInsideLayer.style.left = (safeParseInt(<span class="reserved">this</span>.theInsideLayer.style.left) - hPixelAdjustment) + <span class="literal">'px'</span>;
}
<span class="comment">// check top and bottom - both can not be corrected</span>
<span class="reserved">if</span>(geoExtents[1] < maxExtents[1]) {
<span class="comment">// extra on bottom</span>
vPixelAdjustment = Math.round((maxExtents[1] - geoExtents[1]) / <span class="reserved">this</span>.cellSize);
}
<span class="reserved">if</span>(geoExtents[3] > maxExtents[3]) {
<span class="comment">// extra on top</span>
<span class="reserved">if</span>(vPixelAdjustment != 0) {
<span class="comment">// if both top and bottom are over, split the difference</span>
vPixelAdjustment += Math.round((maxExtents[3] - geoExtents[3]) / <span class="reserved">this</span>.cellSize);
vPixelAdjustment /= 2;
} <span class="reserved">else</span> {
vPixelAdjustment = Math.round((maxExtents[3] - geoExtents[3]) / <span class="reserved">this</span>.cellSize);
}
}
<span class="reserved">if</span>(vPixelAdjustment != 0) {
<span class="reserved">this</span>.theInsideLayer.style.top = (safeParseInt(<span class="reserved">this</span>.theInsideLayer.style.top) + vPixelAdjustment) + <span class="literal">'px'</span>;
}
}
};
<span class="comment">/**
* internal function to reuse extra images
* take last image from each row and put it at the beginning
*/</span>
kaMap.<span class="reserved">prototype</span>.wrapR2L = <span class="reserved">function</span>() {
<span class="reserved">this</span>.xOffset = <span class="reserved">this</span>.xOffset - (<span class="reserved">this</span>.nBuffer * <span class="reserved">this</span>.tileWidth);
var layers = <span class="reserved">this</span>.aMaps[<span class="reserved">this</span>.currentMap].getLayers();
<span class="reserved">for</span>( var k=0; k<layers.length; k++) {
var d = layers[k].domObj;
var refLeft = safeParseInt(d.childNodes[0].style.left);
<span class="reserved">for</span> (var j=0; j<<span class="reserved">this</span>.nHigh; j++) {
var imgLast = d.childNodes[((j+1)*<span class="reserved">this</span>.nWide)-1];
var imgNext = d.childNodes[j*<span class="reserved">this</span>.nWide];
imgLast.style.left = (refLeft - <span class="reserved">this</span>.tileWidth) + <span class="literal">'px'</span>;
imgLast.src = <span class="reserved">this</span>.aPixel.src;
d.removeChild(imgLast);
d.insertBefore(imgLast, imgNext);
<span class="reserved">if</span> (layers[k].visible) {
layers[k].setTile(imgLast);
}
}
}
};
<span class="comment">/**
* internal function to reuse extra image
* take first image from each row and put it at the end
*/</span>
kaMap.<span class="reserved">prototype</span>.wrapL2R = <span class="reserved">function</span>() {
<span class="reserved">this</span>.xOffset = <span class="reserved">this</span>.xOffset + (<span class="reserved">this</span>.nBuffer*<span class="reserved">this</span>.tileWidth);
var layers = <span class="reserved">this</span>.aMaps[<span class="reserved">this</span>.currentMap].getLayers();
<span class="reserved">for</span>( var k=0; k<layers.length; k++) {
var d = layers[k].domObj;
var refLeft = safeParseInt(d.childNodes[<span class="reserved">this</span>.nWide-1].style.left);
<span class="reserved">for</span> (var j=0; j<<span class="reserved">this</span>.nHigh; j++) {
var imgFirst = d.childNodes[j*<span class="reserved">this</span>.nWide];
var imgNext;
<span class="comment">/* need to use insertBefore to get a node at the end of a 'row'
* but this doesn't work for the very last row :(*/</span>
<span class="reserved">if</span> (j < <span class="reserved">this</span>.nHigh-1) {
imgNext = d.childNodes[((j+1)*<span class="reserved">this</span>.nWide)];
} <span class="reserved">else</span> {
imgNext = null;
}
imgFirst.style.left = (refLeft + <span class="reserved">this</span>.tileWidth) + <span class="literal">'px'</span>;
imgFirst.src = <span class="reserved">this</span>.aPixel.src;
d.removeChild(imgFirst);
<span class="reserved">if</span> (imgNext) {
d.insertBefore(imgFirst, imgNext);
} <span class="reserved">else</span> {
d.appendChild(imgFirst);
}
<span class="reserved">if</span> (layers[k].visible) {
layers[k].setTile(imgFirst);
}
}
}
};
<span class="comment">/**
* internal function to reuse extra images
* take top image from each column and put it at the bottom
*/</span>
kaMap.<span class="reserved">prototype</span>.wrapT2B = <span class="reserved">function</span>() {
<span class="reserved">this</span>.yOffset = <span class="reserved">this</span>.yOffset + (<span class="reserved">this</span>.nBuffer*<span class="reserved">this</span>.tileHeight);
var layers = <span class="reserved">this</span>.aMaps[<span class="reserved">this</span>.currentMap].getLayers();
<span class="reserved">for</span>( var k=0; k<layers.length; k++) {
var d = layers[k].domObj;
var refTop = safeParseInt(d.childNodes[(<span class="reserved">this</span>.nHigh*<span class="reserved">this</span>.nWide)-1].style.top);
<span class="reserved">for</span> (var i=0; i<<span class="reserved">this</span>.nWide; i++) {
var imgBottom = d.childNodes[0];
imgBottom.style.top = (refTop + <span class="reserved">this</span>.tileHeight) + <span class="literal">'px'</span>;
imgBottom.src = <span class="reserved">this</span>.aPixel.src;
d.removeChild(imgBottom);
d.appendChild(imgBottom);
<span class="reserved">if</span> (layers[k].visible) {
layers[k].setTile(imgBottom);
}
}
}
};
<span class="comment">/**
* internal function to reuse extra images
* take bottom image from each column and put it at the top
*/</span>
kaMap.<span class="reserved">prototype</span>.wrapB2T = <span class="reserved">function</span>() {
<span class="reserved">this</span>.yOffset = <span class="reserved">this</span>.yOffset - (<span class="reserved">this</span>.nBuffer*<span class="reserved">this</span>.tileHeight);
var layers = <span class="reserved">this</span>.aMaps[<span class="reserved">this</span>.currentMap].getLayers();
<span class="reserved">for</span>( var k=0; k<layers.length; k++) {
var d = layers[k].domObj;
var refTop = safeParseInt(d.childNodes[0].style.top);
<span class="reserved">for</span> (var i=0; i<<span class="reserved">this</span>.nWide; i++) {
var imgTop = d.childNodes[(<span class="reserved">this</span>.nHigh*<span class="reserved">this</span>.nWide)-1];
imgTop.style.top = (refTop - <span class="reserved">this</span>.tileHeight) + <span class="literal">'px'</span>;
imgTop.src = <span class="reserved">this</span>.aPixel.src;
d.removeChild(imgTop);
d.insertBefore(imgTop, d.childNodes[0]);
<span class="reserved">if</span> (layers[k].visible) {
layers[k].setTile(imgTop);
}
}
}
};
<span class="comment">/**
* kaMap.addMap( oMap )
*
* add a new instance of _map to kaMap. _map is an internal class that
* represents a map file from the configuration file. This function is
* intended for internal use by the init.php script.
*
* oMap - object, an instance of _map
*/</span>
kaMap.<span class="reserved">prototype</span>.addMap = <span class="reserved">function</span>( oMap ) {
oMap.kaMap = <span class="reserved">this</span>;
<span class="reserved">this</span>.aMaps[oMap.name] = oMap;
};
<span class="comment">/**
* kaMap.getMaps()
*
* return an array of all the _map objects that kaMap knows about. These can
* be used to generate controls to switch between maps and to get information
* about the layers (groups) and scales available in a given map.
*/</span>
kaMap.<span class="reserved">prototype</span>.getMaps = <span class="reserved">function</span>() {
<span class="reserved">return</span> <span class="reserved">this</span>.aMaps;
};
<span class="comment">/**
* kaMap.getCurrentMap()
*
* returns the currently selected _map object. This can be used to get
* information about the layers (groups) and scales available in the current
* map.
*/</span>
kaMap.<span class="reserved">prototype</span>.getCurrentMap = <span class="reserved">function</span>() {
<span class="reserved">return</span> <span class="reserved">this</span>.aMaps[<span class="reserved">this</span>.currentMap];
};
<span class="comment">/**
* kaMap.selectMap( name )
*
* select one of the maps that kaMap knows about and re-initialize kaMap with
* this new map. This function returns true if name is valid and false if the
* map is invalid. Note that a return of true does not imply that the map is
* fully active. You must register for the KAMAP_MAP_INITIALIZED event since
* the map initialization happens asynchronously.
*
* name - string, the name of the map to select
*/</span>
kaMap.<span class="reserved">prototype</span>.selectMap = <span class="reserved">function</span>( name ) {
<span class="reserved">if</span> (!<span class="reserved">this</span>.aMaps[name]) {
<span class="reserved">return</span> false;
} <span class="reserved">else</span> {
<span class="reserved">this</span>.currentMap = name;
var oMap = <span class="reserved">this</span>.getCurrentMap();
<span class="reserved">this</span>.setBackgroundColor(oMap.backgroundColor);
<span class="comment">//modified by cappu</span>
<span class="reserved">this</span>.setMapLayers();
<span class="reserved">if</span> (oMap.aZoomTo.length != 0) {
<span class="reserved">this</span>.zoomTo(oMap.aZoomTo[0], oMap.aZoomTo[1], oMap.aZoomTo[2]);
oMap.aZoomTo.length = 0;
} <span class="reserved">else</span> {
<span class="reserved">this</span>.zoomToExtents( oMap.currentExtents[0], oMap.currentExtents[1],
oMap.currentExtents[2], oMap.currentExtents[3] );
}
<span class="reserved">this</span>.triggerEvent( KAMAP_MAP_INITIALIZED, <span class="reserved">this</span>.currentMap );
<span class="reserved">return</span> true;
}
};
<span class="comment">/*
* internal function added by cappu
* check wich layers are visible and checked visible
* in legend for current scale and map in InsideLayer
* If needed create append or remove mapLayer!
*/</span>
kaMap.<span class="reserved">prototype</span>.setMapLayers = <span class="reserved">function</span>( ) {
var oMap = <span class="reserved">this</span>.getCurrentMap();
<span class="comment">//remove layers not to be drown at the selected scale this should be change to not remove the visible</span>
<span class="reserved">for</span>(var i = <span class="reserved">this</span>.theInsideLayer.childNodes.length - 1; i>=0; i-- ) {
<span class="reserved">if</span> (<span class="reserved">this</span>.theInsideLayer.childNodes[i].className == <span class="literal">'mapLayer'</span>) {
<span class="reserved">this</span>.theInsideLayer.childNodes[i].appended=false;
<span class="reserved">this</span>.theInsideLayer.removeChild(<span class="reserved">this</span>.theInsideLayer.childNodes[i]); }
}
<span class="comment">//now check layer and create or append</span>
layers=oMap.getLayers(); <span class="comment">//get only visible and checked layers</span>
<span class="reserved">for</span>( var i=0; i<layers.length; i++) {
<span class="reserved">if</span>(!layers[i].domObj) {
var d = <span class="reserved">this</span>.createMapLayer( layers[i].name );
<span class="reserved">this</span>.theInsideLayer.appendChild( d );
d.appended=true;
layers[i].domObj = d;
layers[i].setOpacity( layers[i].opacity );
layers[i].setZIndex( layers[i].zIndex );
layers[i].setVisibility( layers[i].visible );
<span class="reserved">this</span>.nWide = 0;
<span class="reserved">this</span>.nHigh = 0;
<span class="reserved">this</span>.drawGroup(layers[i]);
} <span class="reserved">else</span> <span class="reserved">if</span> (!layers[i].domObj.appended) {
<span class="reserved">this</span>.theInsideLayer.appendChild( layers[i].domObj );
layers[i].domObj.appended=true;
layers[i].setZIndex( layers[i].zIndex );
}
}
<span class="reserved">return</span> true;
};
<span class="comment">/*
* internal function added by cappu
* this function force a layer create image
*/</span>
kaMap.<span class="reserved">prototype</span>.drawGroup = <span class="reserved">function</span>(group) {
var newViewportWidth = <span class="reserved">this</span>.getObjectWidth(<span class="reserved">this</span>.domObj);
var newViewportHeight = <span class="reserved">this</span>.getObjectHeight(<span class="reserved">this</span>.domObj);
<span class="reserved">if</span> (<span class="reserved">this</span>.viewportWidth == null) {
<span class="reserved">this</span>.theInsideLayer.style.top = (-1*<span class="reserved">this</span>.nCurrentTop + <span class="reserved">this</span>.yOrigin) + <span class="literal">"px"</span>;
<span class="reserved">this</span>.theInsideLayer.style.left = (-1*<span class="reserved">this</span>.nCurrentLeft + <span class="reserved">this</span>.xOrigin) + <span class="literal">"px"</span>;
<span class="reserved">this</span>.viewportWidth = newViewportWidth;
<span class="reserved">this</span>.viewportHeight = newViewportHeight;
}
var newWide = Math.ceil((newViewportWidth / <span class="reserved">this</span>.tileWidth) + 2*<span class="reserved">this</span>.nBuffer);
var newHigh = Math.ceil((newViewportHeight / <span class="reserved">this</span>.tileHeight) + 2*<span class="reserved">this</span>.nBuffer);
<span class="reserved">this</span>.viewportWidth = newViewportWidth;
<span class="reserved">this</span>.viewportHeight = newViewportHeight;
<span class="reserved">if</span> (<span class="reserved">this</span>.nHigh == 0 && <span class="reserved">this</span>.nWide == 0) {
<span class="reserved">this</span>.nWide = newWide;
}
<span class="reserved">while</span> (<span class="reserved">this</span>.nHigh < newHigh) {
<span class="reserved">this</span>.appendRow(group);
}
<span class="reserved">while</span> (<span class="reserved">this</span>.nHigh > newHigh) {
<span class="reserved">this</span>.removeRow(group);
}
<span class="reserved">while</span> (<span class="reserved">this</span>.nWide < newWide) {
<span class="reserved">this</span>.appendColumn(group);
}
<span class="reserved">while</span> (<span class="reserved">this</span>.nWide > newWide) {
<span class="reserved">this</span>.removeColumn(group);
}
<span class="reserved">return</span> true;
};
kaMap.<span class="reserved">prototype</span>.createMapLayer = <span class="reserved">function</span>( id ) {
var d = document.createElement( <span class="literal">'div'</span> );
d.id = id;
d.className = <span class="literal">'mapLayer'</span>;
d.style.position = <span class="literal">'absolute'</span>;
d.style.visibility = <span class="literal">'visible'</span>;
d.style.left = <span class="literal">'0px'</span>;
d.style.top = <span class="literal">'0px'</span>;
d.style.width= <span class="literal">'3000px'</span>;
d.style.height = <span class="literal">'3000px'</span>;
d.appended= false;<span class="comment">//added by cappu</span>
<span class="reserved">return</span> d;
};
<span class="comment">//modified by cappu</span>
kaMap.<span class="reserved">prototype</span>.addMapLayer = <span class="reserved">function</span>( l ) {
var map = <span class="reserved">this</span>.getCurrentMap();
map.addLayer(l);
<span class="reserved">this</span>.setMapLayers();
<span class="reserved">this</span>.paintLayer(l);
<span class="reserved">this</span>.triggerEvent( KAMAP_LAYERS_CHANGED, <span class="reserved">this</span>.currentMap );
};
<span class="comment">//added by cappu</span>
kaMap.<span class="reserved">prototype</span>.removeMapLayer = <span class="reserved">function</span>( id ) {
var map = <span class="reserved">this</span>.getCurrentMap();
var layer = map.getLayer(id);
<span class="reserved">if</span> (!layer) {
<span class="reserved">return</span> false;
}
<span class="reserved">if</span> (map.removeLayer ( map.getLayer(id) )) {
<span class="reserved">this</span>.setMapLayers();
<span class="reserved">this</span>.triggerEvent( KAMAP_LAYERS_CHANGED, <span class="reserved">this</span>.currentMap );
}
};
kaMap.<span class="reserved">prototype</span>.getCenter = <span class="reserved">function</span>() {
var deltaMouseX = <span class="reserved">this</span>.nCurrentLeft - <span class="reserved">this</span>.xOrigin + safeParseInt(<span class="reserved">this</span>.theInsideLayer.style.left);
var deltaMouseY = <span class="reserved">this</span>.nCurrentTop - <span class="reserved">this</span>.yOrigin + safeParseInt(<span class="reserved">this</span>.theInsideLayer.style.top);
var vpTop = <span class="reserved">this</span>.nCurrentTop - deltaMouseY;
var vpLeft = <span class="reserved">this</span>.nCurrentLeft - deltaMouseX;
var vpCenterX = vpLeft + <span class="reserved">this</span>.viewportWidth/2;
var vpCenterY = vpTop + <span class="reserved">this</span>.viewportHeight/2;
<span class="reserved">return</span> new Array( vpCenterX, vpCenterY );
};
<span class="comment">/**
* kaMap.getGeoExtents()
*
* returns an array of geographic extents for the current view in the form
* (inx, miny, maxx, maxy)
*/</span>
kaMap.<span class="reserved">prototype</span>.getGeoExtents = <span class="reserved">function</span>() {
var minx = -1*(safeParseInt(<span class="reserved">this</span>.theInsideLayer.style.left) - <span class="reserved">this</span>.xOrigin) * <span class="reserved">this</span>.cellSize;
var maxx = minx + <span class="reserved">this</span>.viewportWidth * <span class="reserved">this</span>.cellSize;
var maxy= (safeParseInt(<span class="reserved">this</span>.theInsideLayer.style.top) - <span class="reserved">this</span>.yOrigin) * <span class="reserved">this</span>.cellSize;
var miny= maxy - <span class="reserved">this</span>.viewportHeight * <span class="reserved">this</span>.cellSize;
<span class="reserved">return</span> [minx,miny,maxx,maxy];
};
<span class="comment">/**
* kaMap.getMetaExtents()
*
* returns an array of geographic extents for the loaded tiles in the form
* (minx, miny, maxx, maxy)
*/</span>
kaMap.<span class="reserved">prototype</span>.getMetaExtents = <span class="reserved">function</span>() {
<span class="comment">//use current extents if no layers visible</span>
var result = <span class="reserved">this</span>.getGeoExtents();
var oMap = <span class="reserved">this</span>.getCurrentMap();
layers=oMap.getLayers();
<span class="reserved">for</span>( var i=0; i<layers.length; i++) {
<span class="comment">//find first layer with a domObj</span>
<span class="reserved">if</span>(layers[i].domObj) {
var d = layers[i].domObj;
<span class="comment">//top left of first image should be top left of loaded tiles</span>
var pl = safeParseInt(d.childNodes[0].style.left);
var pt = safeParseInt(d.childNodes[0].style.top);
<span class="comment">/* I think the first child is always top left ...
for (var j=0;j<d.childNodes.length; j++) {
if (pl == null) {
pl = safeParseInt(d.childNodes[j].style.left);
pt = safeParseInt(d.childNodes[j].style.top);
} else {
pl = Math.min(pl,safeParseInt(d.childNodes[j].style.left));
pt = Math.min(pt,safeParseInt(d.childNodes[j].style.top));
}
}
*/</span>
<span class="comment">//convert to geographic</span>
var glt = <span class="reserved">this</span>.pixToGeo(pl,pt,true);
var left = -1*glt[0];
var top = -1*glt[1];
<span class="comment">//bottom right is easy to calculate from this</span>
var right = left + <span class="reserved">this</span>.nWide*<span class="reserved">this</span>.tileWidth*<span class="reserved">this</span>.cellSize;
var bottom = top - <span class="reserved">this</span>.nHigh*<span class="reserved">this</span>.tileHeight*<span class="reserved">this</span>.cellSize;
result = [left, bottom, right, top];
break;
}
}
<span class="reserved">return</span> result;
};
kaMap.<span class="reserved">prototype</span>.zoomIn = <span class="reserved">function</span>() {
<span class="reserved">this</span>.zoomByFactor(<span class="reserved">this</span>.aMaps[<span class="reserved">this</span>.currentMap].zoomIn());
};
kaMap.<span class="reserved">prototype</span>.zoomOut = <span class="reserved">function</span>() {
<span class="reserved">this</span>.zoomByFactor(<span class="reserved">this</span>.aMaps[<span class="reserved">this</span>.currentMap].zoomOut());
};
kaMap.<span class="reserved">prototype</span>.zoomToScale = <span class="reserved">function</span>( scale ) {
<span class="reserved">this</span>.zoomByFactor(<span class="reserved">this</span>.aMaps[<span class="reserved">this</span>.currentMap].zoomToScale(scale));
};
kaMap.<span class="reserved">prototype</span>.zoomByFactor = <span class="reserved">function</span>( nZoomFactor ) {
<span class="reserved">if</span> (nZoomFactor == 1) {
<span class="reserved">this</span>.triggerEvent( KAMAP_NOTICE, <span class="literal">"NOTICE: changing to current scale aborted"</span>);
<span class="reserved">return</span>;
}
<span class="reserved">this</span>.cellSize = <span class="reserved">this</span>.cellSize/nZoomFactor;
<span class="reserved">this</span>.setMapLayers();
<span class="reserved">this</span>.initializeLayers(nZoomFactor);
<span class="reserved">this</span>.triggerEvent( KAMAP_SCALE_CHANGED, <span class="reserved">this</span>.getCurrentScale() );
<span class="reserved">this</span>.triggerEvent( KAMAP_EXTENTS_CHANGED, <span class="reserved">this</span>.getGeoExtents() );
};
kaMap.<span class="reserved">prototype</span>.getCurrentScale = <span class="reserved">function</span>() {
<span class="reserved">return</span> <span class="reserved">this</span>.aMaps[<span class="reserved">this</span>.currentMap].aScales[<span class="reserved">this</span>.aMaps[<span class="reserved">this</span>.currentMap].currentScale];
};
kaMap.<span class="reserved">prototype</span>.setLayerQueryable = <span class="reserved">function</span>( name, bQueryable ) {
<span class="reserved">this</span>.aMaps[<span class="reserved">this</span>.currentMap].setLayerQueryable( name, bQueryable );
};
kaMap.<span class="reserved">prototype</span>.setLayerVisibility = <span class="reserved">function</span>( name, bVisible ) {
<span class="reserved">if</span>(!<span class="reserved">this</span>.loadUnchecked && bVisible) {
layer=<span class="reserved">this</span>.aMaps[<span class="reserved">this</span>.currentMap].getLayer(name);
layer.visible=true;
<span class="reserved">this</span>.setMapLayers();
<span class="reserved">this</span>.aMaps[<span class="reserved">this</span>.currentMap].setLayerVisibility( name, bVisible );
<span class="reserved">this</span>.paintLayer(layer);
} <span class="reserved">else</span> {
<span class="reserved">this</span>.aMaps[<span class="reserved">this</span>.currentMap].setLayerVisibility( name, bVisible );
}
};
kaMap.<span class="reserved">prototype</span>.setLayerOpacity = <span class="reserved">function</span>( name, opacity ) {
<span class="reserved">this</span>.aMaps[<span class="reserved">this</span>.currentMap].setLayerOpacity( name, opacity );
};
kaMap.<span class="reserved">prototype</span>.registerEventID = <span class="reserved">function</span>( eventID ) {
<span class="reserved">return</span> <span class="reserved">this</span>.eventManager.registerEventID(eventID);
};
kaMap.<span class="reserved">prototype</span>.registerForEvent = <span class="reserved">function</span>( eventID, obj, func ) {
<span class="reserved">return</span> <span class="reserved">this</span>.eventManager.registerForEvent(eventID, obj, func);
};
kaMap.<span class="reserved">prototype</span>.deregisterForEvent = <span class="reserved">function</span>( eventID, obj, func ) {
<span class="reserved">return</span> <span class="reserved">this</span>.eventManager.deregisterForEvent(eventID, obj, func);
};
kaMap.<span class="reserved">prototype</span>.triggerEvent = <span class="reserved">function</span>( eventID <span class="comment">/*pass additional arguments*/</span> ) {
<span class="reserved">return</span> <span class="reserved">this</span>.eventManager.triggerEvent.apply( <span class="reserved">this</span>.eventManager, arguments );
};
<span class="comment">/**
* special helper function to parse an integer value safely in case
* it is represented in IEEE format (scientific notation).
*/</span>
<span class="reserved">function</span> safeParseInt( val ) {
<span class="reserved">return</span> Math.round(parseFloat(val));
};
<span class="comment">/******************************************************************************
* _map
*
* internal class used to store map objects coming from the init script
*
* szName - string, the layer name (or group name, in this case ;))
*
* szTitle - string, the human-readable title of the map
*
* nCurrentScale - integer, the current scale as an index into aszScales;
*
* aszScales - array, an array of scale values for zooming. The first scale is
* assumed to be the default scale of the map
*
* aszLayers - array, an array of layer names and statuses. The array is indexed by
* the layer name and the value is true or false for the status.
*
*****************************************************************************/</span>
<span class="reserved">function</span> _map(o) {
<span class="reserved">this</span>.aLayers = [];
<span class="reserved">this</span>.aZoomTo = [];
<span class="reserved">this</span>.kaMap = null;
<span class="reserved">this</span>.name = (typeof(o.name) != <span class="literal">'undefined'</span>) ? o.name : <span class="literal">'noname'</span>;
<span class="reserved">this</span>.title = (typeof(o.title) != <span class="literal">'undefined'</span>) ? o.title : <span class="literal">'no title'</span>;
<span class="reserved">this</span>.aScales = (typeof(o.scales) != <span class="literal">'undefined'</span>) ? o.scales : [1];
<span class="reserved">this</span>.currentScale = (typeof(o.currentScale) != <span class="literal">'undefined'</span>) ? parseFloat(o.currentScale) : 0;
<span class="reserved">this</span>.units = (typeof(o.units) != <span class="literal">'undefined'</span>) ? o.units : 5;
<span class="reserved">this</span>.resolution = (typeof(o.resolution) != <span class="literal">'undefined'</span>) ? o.resolution:72; <span class="comment">//used in scale calculations</span>
<span class="reserved">this</span>.defaultExtents = (typeof(o.defaultExtents) != <span class="literal">'undefined'</span>) ? o.defaultExtents:[];
<span class="reserved">this</span>.currentExtents = (typeof(o.currentExtents) != <span class="literal">'undefined'</span>) ? o.currentExtents:[];
<span class="reserved">this</span>.maxExtents = (typeof(o.maxExtents) != <span class="literal">'undefined'</span>) ? o.maxExtents : [];
<span class="reserved">this</span>.backgroundColor = (typeof(o.backgroundColor) != <span class="literal">'undefined'</span>) ? o.backgroundColor : <span class="literal">'#ffffff'</span>;
<span class="comment">//to be used for versioning the map file ...</span>
<span class="reserved">this</span>.version = (typeof(o.version) != <span class="literal">'undefined'</span>) ? o.version : <span class="literal">"0"</span>;
};
_map.<span class="reserved">prototype</span>.addLayer = <span class="reserved">function</span>( layer ) {
layer._map = <span class="reserved">this</span>;
layer.zIndex = <span class="reserved">this</span>.aLayers.length;
<span class="reserved">this</span>.aLayers.push( layer );
};
<span class="comment">//added by cappu</span>
_map.<span class="reserved">prototype</span>.removeLayer = <span class="reserved">function</span>( l ) {
var alayer=Array();
<span class="reserved">for</span>(i=0,a=0;i<<span class="reserved">this</span>.aLayers.length;i++) {
<span class="reserved">if</span>(<span class="reserved">this</span>.aLayers[i]!=l) {
alayer[a]=<span class="reserved">this</span>.aLayers[i];
a++;
}
}
<span class="reserved">this</span>.aLayers=alayer;
<span class="reserved">return</span> true;
};
<span class="comment">//modified by cappu return only layer querable and visible for current scale</span>
_map.<span class="reserved">prototype</span>.getQueryableLayers = <span class="reserved">function</span>() {
var r = [];
var l = <span class="reserved">this</span>.getLayers();
<span class="reserved">for</span>( var i=0; i<l.length; i++) {
<span class="reserved">if</span> (l[i].isQueryable()) {
r.push(l[i]);
}
}
<span class="reserved">return</span> r;
};
<span class="comment">//modified by cappu, return only layer visible and checked for current scale !!</span>
_map.<span class="reserved">prototype</span>.getLayers = <span class="reserved">function</span>() {
var r = [];
<span class="reserved">for</span>( var i=0; i<<span class="reserved">this</span>.aLayers.length; i++) {
<span class="reserved">if</span> (<span class="reserved">this</span>.aLayers[i].isVisible() &&
(<span class="reserved">this</span>.aLayers[i].visible || <span class="reserved">this</span>.kaMap.loadUnchecked) ) {
r.push(<span class="reserved">this</span>.aLayers[i]);
}
}
<span class="reserved">return</span> r;
};
<span class="comment">//added by cappu replace old getQueryableLayers</span>
_map.<span class="reserved">prototype</span>.getAllQueryableLayers = <span class="reserved">function</span>() {
var r = [];
<span class="reserved">for</span>( var i=0; i<<span class="reserved">this</span>.aLayers.length; i++) {
<span class="reserved">if</span> (<span class="reserved">this</span>.aLayers[i].isQueryable()) {
r.push(<span class=<