Software: Apache. PHP/5.5.15 uname -a: Windows NT SVR-DMZ 6.1 build 7600 (Windows Server 2008 R2 Enterprise Edition) i586 SYSTEM Safe-mode: OFF (not secure) E:\nuevo\phpMyAdmin2\js\openlayers\src\openlayers\lib\OpenLayers\Control\ drwxrwxrwx | |
| Viewing file: Select action/file-type: /* Copyright (c) 2006-2010 by OpenLayers Contributors (see authors.txt for
* full list of contributors). Published under the Clear BSD license.
* See http://svn.openlayers.org/trunk/openlayers/license.txt for the
* full text of the license. */
/**
* @requires OpenLayers/Control.js
*/
/**
* Class: OpenLayers.Control.LayerSwitcher
* The LayerSwitcher control displays a table of contents for the map. This
* allows the user interface to switch between BaseLasyers and to show or hide
* Overlays. By default the switcher is shown minimized on the right edge of
* the map, the user may expand it by clicking on the handle.
*
* To create the LayerSwitcher outside of the map, pass the Id of a html div
* as the first argument to the constructor.
*
* Inherits from:
* - <OpenLayers.Control>
*/
OpenLayers.Control.LayerSwitcher =
OpenLayers.Class(OpenLayers.Control, {
/**
* APIProperty: roundedCorner
* {Boolean} If true the Rico library is used for rounding the corners
* of the layer switcher div, defaults to true.
*/
roundedCorner: true,
/**
* APIProperty: roundedCornerColor
* {String} The color of the rounded corners, only applies if roundedCorner
* is true, defaults to "darkblue".
*/
roundedCornerColor: "darkblue",
/**
* Property: layerStates
* {Array(Object)} Basically a copy of the "state" of the map's layers
* the last time the control was drawn. We have this in order to avoid
* unnecessarily redrawing the control.
*/
layerStates: null,
// DOM Elements
/**
* Property: layersDiv
* {DOMElement}
*/
layersDiv: null,
/**
* Property: baseLayersDiv
* {DOMElement}
*/
baseLayersDiv: null,
/**
* Property: baseLayers
* {Array(<OpenLayers.Layer>)}
*/
baseLayers: null,
/**
* Property: dataLbl
* {DOMElement}
*/
dataLbl: null,
/**
* Property: dataLayersDiv
* {DOMElement}
*/
dataLayersDiv: null,
/**
* Property: dataLayers
* {Array(<OpenLayers.Layer>)}
*/
dataLayers: null,
/**
* Property: minimizeDiv
* {DOMElement}
*/
minimizeDiv: null,
/**
* Property: maximizeDiv
* {DOMElement}
*/
maximizeDiv: null,
/**
* APIProperty: ascending
* {Boolean}
*/
ascending: true,
/**
* Constructor: OpenLayers.Control.LayerSwitcher
*
* Parameters:
* options - {Object}
*/
initialize: function(options) {
OpenLayers.Control.prototype.initialize.apply(this, arguments);
this.layerStates = [];
},
/**
* APIMethod: destroy
*/
destroy: function() {
OpenLayers.Event.stopObservingElement(this.div);
OpenLayers.Event.stopObservingElement(this.minimizeDiv);
OpenLayers.Event.stopObservingElement(this.maximizeDiv);
//clear out layers info and unregister their events
this.clearLayersArray("base");
this.clearLayersArray("data");
this.map.events.un({
"addlayer": this.redraw,
"changelayer": this.redraw,
"removelayer": this.redraw,
"changebaselayer": this.redraw,
scope: this
});
OpenLayers.Control.prototype.destroy.apply(this, arguments);
},
/**
* Method: setMap
*
* Properties:
* map - {<OpenLayers.Map>}
*/
setMap: function(map) {
OpenLayers.Control.prototype.setMap.apply(this, arguments);
this.map.events.on({
"addlayer": this.redraw,
"changelayer": this.redraw,
"removelayer": this.redraw,
"changebaselayer": this.redraw,
scope: this
});
},
/**
* Method: draw
*
* Returns:
* {DOMElement} A reference to the DIV DOMElement containing the
* switcher tabs.
*/
draw: function() {
OpenLayers.Control.prototype.draw.apply(this);
// create layout divs
this.loadContents();
// set mode to minimize
if(!this.outsideViewport) {
this.minimizeControl();
}
// populate div with current info
this.redraw();
return this.div;
},
/**
* Method: clearLayersArray
* User specifies either "base" or "data". we then clear all the
* corresponding listeners, the div, and reinitialize a new array.
*
* Parameters:
* layersType - {String}
*/
clearLayersArray: function(layersType) {
var layers = this[layersType + "Layers"];
if (layers) {
for(var i=0, len=layers.length; i<len ; i++) {
var layer = layers[i];
OpenLayers.Event.stopObservingElement(layer.inputElem);
OpenLayers.Event.stopObservingElement(layer.labelSpan);
}
}
this[layersType + "LayersDiv"].innerHTML = "";
this[layersType + "Layers"] = [];
},
/**
* Method: checkRedraw
* Checks if the layer state has changed since the last redraw() call.
*
* Returns:
* {Boolean} The layer state changed since the last redraw() call.
*/
checkRedraw: function() {
var redraw = false;
if ( !this.layerStates.length ||
(this.map.layers.length != this.layerStates.length) ) {
redraw = true;
} else {
for (var i=0, len=this.layerStates.length; i<len; i++) {
var layerState = this.layerStates[i];
var layer = this.map.layers[i];
if ( (layerState.name != layer.name) ||
(layerState.inRange != layer.inRange) ||
(layerState.id != layer.id) ||
(layerState.visibility != layer.visibility) ) {
redraw = true;
break;
}
}
}
return redraw;
},
/**
* Method: redraw
* Goes through and takes the current state of the Map and rebuilds the
* control to display that state. Groups base layers into a
* radio-button group and lists each data layer with a checkbox.
*
* Returns:
* {DOMElement} A reference to the DIV DOMElement containing the control
*/
redraw: function() {
//if the state hasn't changed since last redraw, no need
// to do anything. Just return the existing div.
if (!this.checkRedraw()) {
return this.div;
}
//clear out previous layers
this.clearLayersArray("base");
this.clearLayersArray("data");
var containsOverlays = false;
var containsBaseLayers = false;
// Save state -- for checking layer if the map state changed.
// We save this before redrawing, because in the process of redrawing
// we will trigger more visibility changes, and we want to not redraw
// and enter an infinite loop.
var len = this.map.layers.length;
this.layerStates = new Array(len);
for (var i=0; i <len; i++) {
var layer = this.map.layers[i];
this.layerStates[i] = {
'name': layer.name,
'visibility': layer.visibility,
'inRange': layer.inRange,
'id': layer.id
};
}
var layers = this.map.layers.slice();
if (!this.ascending) { layers.reverse(); }
for(var i=0, len=layers.length; i<len; i++) {
var layer = layers[i];
var baseLayer = layer.isBaseLayer;
if (layer.displayInLayerSwitcher) {
if (baseLayer) {
containsBaseLayers = true;
} else {
containsOverlays = true;
}
// only check a baselayer if it is *the* baselayer, check data
// layers if they are visible
var checked = (baseLayer) ? (layer == this.map.baseLayer)
: layer.getVisibility();
// create input element
var inputElem = document.createElement("input");
inputElem.id = this.id + "_input_" + layer.name;
inputElem.name = (baseLayer) ? this.id + "_baseLayers" : layer.name;
inputElem.type = (baseLayer) ? "radio" : "checkbox";
inputElem.value = layer.name;
inputElem.checked = checked;
inputElem.defaultChecked = checked;
if (!baseLayer && !layer.inRange) {
inputElem.disabled = true;
}
var context = {
'inputElem': inputElem,
'layer': layer,
'layerSwitcher': this
};
OpenLayers.Event.observe(inputElem, "mouseup",
OpenLayers.Function.bindAsEventListener(this.onInputClick,
context)
);
// create span
var labelSpan = document.createElement("span");
OpenLayers.Element.addClass(labelSpan, "labelSpan")
if (!baseLayer && !layer.inRange) {
labelSpan.style.color = "gray";
}
labelSpan.innerHTML = layer.name;
labelSpan.style.verticalAlign = (baseLayer) ? "bottom"
: "baseline";
OpenLayers.Event.observe(labelSpan, "click",
OpenLayers.Function.bindAsEventListener(this.onInputClick,
context)
);
// create line break
var br = document.createElement("br");
var groupArray = (baseLayer) ? this.baseLayers
: this.dataLayers;
groupArray.push({
'layer': layer,
'inputElem': inputElem,
'labelSpan': labelSpan
});
var groupDiv = (baseLayer) ? this.baseLayersDiv
: this.dataLayersDiv;
groupDiv.appendChild(inputElem);
groupDiv.appendChild(labelSpan);
groupDiv.appendChild(br);
}
}
// if no overlays, dont display the overlay label
this.dataLbl.style.display = (containsOverlays) ? "" : "none";
// if no baselayers, dont display the baselayer label
this.baseLbl.style.display = (containsBaseLayers) ? "" : "none";
return this.div;
},
/**
* Method:
* A label has been clicked, check or uncheck its corresponding input
*
* Parameters:
* e - {Event}
*
* Context:
* - {DOMElement} inputElem
* - {<OpenLayers.Control.LayerSwitcher>} layerSwitcher
* - {<OpenLayers.Layer>} layer
*/
onInputClick: function(e) {
if (!this.inputElem.disabled) {
if (this.inputElem.type == "radio") {
this.inputElem.checked = true;
this.layer.map.setBaseLayer(this.layer);
} else {
this.inputElem.checked = !this.inputElem.checked;
this.layerSwitcher.updateMap();
}
}
OpenLayers.Event.stop(e);
},
/**
* Method: onLayerClick
* Need to update the map accordingly whenever user clicks in either of
* the layers.
*
* Parameters:
* e - {Event}
*/
onLayerClick: function(e) {
this.updateMap();
},
/**
* Method: updateMap
* Cycles through the loaded data and base layer input arrays and makes
* the necessary calls to the Map object such that that the map's
* visual state corresponds to what the user has selected in
* the control.
*/
updateMap: function() {
// set the newly selected base layer
for(var i=0, len=this.baseLayers.length; i<len; i++) {
var layerEntry = this.baseLayers[i];
if (layerEntry.inputElem.checked) {
this.map.setBaseLayer(layerEntry.layer, false);
}
}
// set the correct visibilities for the overlays
for(var i=0, len=this.dataLayers.length; i<len; i++) {
var layerEntry = this.dataLayers[i];
layerEntry.layer.setVisibility(layerEntry.inputElem.checked);
}
},
/**
* Method: maximizeControl
* Set up the labels and divs for the control
*
* Parameters:
* e - {Event}
*/
maximizeControl: function(e) {
// set the div's width and height to empty values, so
// the div dimensions can be controlled by CSS
this.div.style.width = "";
this.div.style.height = "";
this.showControls(false);
if (e != null) {
OpenLayers.Event.stop(e);
}
},
/**
* Method: minimizeControl
* Hide all the contents of the control, shrink the size,
* add the maximize icon
*
* Parameters:
* e - {Event}
*/
minimizeControl: function(e) {
// to minimize the control we set its div's width
// and height to 0px, we cannot just set "display"
// to "none" because it would hide the maximize
// div
this.div.style.width = "0px";
this.div.style.height = "0px";
this.showControls(true);
if (e != null) {
OpenLayers.Event.stop(e);
}
},
/**
* Method: showControls
* Hide/Show all LayerSwitcher controls depending on whether we are
* minimized or not
*
* Parameters:
* minimize - {Boolean}
*/
showControls: function(minimize) {
this.maximizeDiv.style.display = minimize ? "" : "none";
this.minimizeDiv.style.display = minimize ? "none" : "";
this.layersDiv.style.display = minimize ? "none" : "";
},
/**
* Method: loadContents
* Set up the labels and divs for the control
*/
loadContents: function() {
//configure main div
OpenLayers.Event.observe(this.div, "mouseup",
OpenLayers.Function.bindAsEventListener(this.mouseUp, this));
OpenLayers.Event.observe(this.div, "click",
this.ignoreEvent);
OpenLayers.Event.observe(this.div, "mousedown",
OpenLayers.Function.bindAsEventListener(this.mouseDown, this));
OpenLayers.Event.observe(this.div, "dblclick", this.ignoreEvent);
// layers list div
this.layersDiv = document.createElement("div");
this.layersDiv.id = this.id + "_layersDiv";
OpenLayers.Element.addClass(this.layersDiv, "layersDiv");
this.baseLbl = document.createElement("div");
this.baseLbl.innerHTML = OpenLayers.i18n("baseLayer");
OpenLayers.Element.addClass(this.baseLbl, "baseLbl");
this.baseLayersDiv = document.createElement("div");
OpenLayers.Element.addClass(this.baseLayersDiv, "baseLayersDiv");
this.dataLbl = document.createElement("div");
this.dataLbl.innerHTML = OpenLayers.i18n("overlays");
OpenLayers.Element.addClass(this.dataLbl, "dataLbl");
this.dataLayersDiv = document.createElement("div");
OpenLayers.Element.addClass(this.dataLayersDiv, "dataLayersDiv");
if (this.ascending) {
this.layersDiv.appendChild(this.baseLbl);
this.layersDiv.appendChild(this.baseLayersDiv);
this.layersDiv.appendChild(this.dataLbl);
this.layersDiv.appendChild(this.dataLayersDiv);
} else {
this.layersDiv.appendChild(this.dataLbl);
this.layersDiv.appendChild(this.dataLayersDiv);
this.layersDiv.appendChild(this.baseLbl);
this.layersDiv.appendChild(this.baseLayersDiv);
}
this.div.appendChild(this.layersDiv);
if(this.roundedCorner) {
OpenLayers.Rico.Corner.round(this.div, {
corners: "tl bl",
bgColor: "transparent",
color: this.roundedCornerColor,
blend: false
});
OpenLayers.Rico.Corner.changeOpacity(this.layersDiv, 0.75);
}
var imgLocation = OpenLayers.Util.getImagesLocation();
var sz = new OpenLayers.Size(18,18);
// maximize button div
var img = imgLocation + 'layer-switcher-maximize.png';
this.maximizeDiv = OpenLayers.Util.createAlphaImageDiv(
"OpenLayers_Control_MaximizeDiv",
null,
sz,
img,
"absolute");
OpenLayers.Element.addClass(this.maximizeDiv, "maximizeDiv");
this.maximizeDiv.style.display = "none";
OpenLayers.Event.observe(this.maximizeDiv, "click",
OpenLayers.Function.bindAsEventListener(this.maximizeControl, this)
);
this.div.appendChild(this.maximizeDiv);
// minimize button div
var img = imgLocation + 'layer-switcher-minimize.png';
var sz = new OpenLayers.Size(18,18);
this.minimizeDiv = OpenLayers.Util.createAlphaImageDiv(
"OpenLayers_Control_MinimizeDiv",
null,
sz,
img,
"absolute");
OpenLayers.Element.addClass(this.minimizeDiv, "minimizeDiv");
this.minimizeDiv.style.display = "none";
OpenLayers.Event.observe(this.minimizeDiv, "click",
OpenLayers.Function.bindAsEventListener(this.minimizeControl, this)
);
this.div.appendChild(this.minimizeDiv);
},
/**
* Method: ignoreEvent
*
* Parameters:
* evt - {Event}
*/
ignoreEvent: function(evt) {
OpenLayers.Event.stop(evt);
},
/**
* Method: mouseDown
* Register a local 'mouseDown' flag so that we'll know whether or not
* to ignore a mouseUp event
*
* Parameters:
* evt - {Event}
*/
mouseDown: function(evt) {
this.isMouseDown = true;
this.ignoreEvent(evt);
},
/**
* Method: mouseUp
* If the 'isMouseDown' flag has been set, that means that the drag was
* started from within the LayerSwitcher control, and thus we can
* ignore the mouseup. Otherwise, let the Event continue.
*
* Parameters:
* evt - {Event}
*/
mouseUp: function(evt) {
if (this.isMouseDown) {
this.isMouseDown = false;
this.ignoreEvent(evt);
}
},
CLASS_NAME: "OpenLayers.Control.LayerSwitcher"
});
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