b78aec44c9
git-svn-id: http://svn.openlayers.org/trunk/openlayers@4115 dc9f47b5-9b13-0410-9fdd-eb0c1a62fdaf
495 lines
14 KiB
JavaScript
495 lines
14 KiB
JavaScript
/* Copyright (c) 2006-2007 MetaCarta, Inc., published under a modified BSD license.
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* See http://svn.openlayers.org/trunk/openlayers/repository-license.txt
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* for the full text of the license. */
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/**
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* Class: OpenLayers.Popup
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*
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* A popup is a small div that can opened and closed on the map.
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* Typically opened in response to clicking on a marker.
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* See <OpenLayers.Marker>. Popup's don't require their own
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* layer and are added the the map using the <OpenLayers.Map.addPopup>
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* method.
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*
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* Example:
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* (code)
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* popup = new OpenLayers.Popup("chicken",
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* new OpenLayers.LonLat(5,40),
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* new OpenLayers.Size(200,200),
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* "example popup",
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* true);
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*
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* map.addPopup(popup);
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* (end)
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*/
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OpenLayers.Popup = OpenLayers.Class({
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/**
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* Property: events
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* {<OpenLayers.Events>} custom event manager
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*/
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events: null,
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/** Property: id
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* {String} the unique identifier assigned to this popup.
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*/
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id: "",
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/**
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* Property: lonlat
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* {<OpenLayers.LonLat>} the position of this popup on the map
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*/
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lonlat: null,
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/**
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* Property: div
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* {DOMElement} the div that contains this popup.
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*/
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div: null,
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/**
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* Property: size
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* {<OpenLayers.Size>} the width and height of the popup.
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*/
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size: null,
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/**
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* Property: contentHTML
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* {String} The HTML that this popup displays.
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*/
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contentHTML: "",
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/**
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* Property: backgroundColor
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* {String} the background color used by the popup.
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*/
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backgroundColor: "",
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/**
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* Property: opacity
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* {float} the opacity of this popup (between 0.0 and 1.0)
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*/
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opacity: "",
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/**
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* Property: border
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* {String} the border size of the popup. (eg 2px)
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*/
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border: "",
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/**
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* Property: contentDiv
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* {DOMElement} a reference to the element that holds the content of
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* the div.
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*/
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contentDiv: null,
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/**
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* Property: groupDiv
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* {DOMElement} the parent of <OpenLayers.Popup.contentDiv>
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*/
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groupDiv: null,
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/**
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* Property: padding
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* {int} the internal padding of the content div.
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*/
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padding: 5,
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/**
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* Property: map
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* {<OpenLayers.Map>} this gets set in Map.js when the popup is added to the map
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*/
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map: null,
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/**
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* Constructor: OpenLayers.Popup
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* Create a popup.
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*
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* Parameters:
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* id - {String} a unqiue identifier for this popup. If null is passed
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* an identifier will be automatically generated.
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* lonlat - {<OpenLayers.LonLat>} The position on the map the popup will
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* be shown.
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* size - {<OpenLayers.Size>} The size of the popup.
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* contentHTML - {String} The HTML content to display inside the
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* popup.
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* closeBox - {Boolean} Whether to display a close box inside
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* the popup.
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*/
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initialize:function(id, lonlat, size, contentHTML, closeBox) {
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if (id == null) {
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id = OpenLayers.Util.createUniqueID(this.CLASS_NAME + "_");
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}
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this.id = id;
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this.lonlat = lonlat;
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this.size = (size != null) ? size
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: new OpenLayers.Size(
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OpenLayers.Popup.WIDTH,
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OpenLayers.Popup.HEIGHT);
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if (contentHTML != null) {
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this.contentHTML = contentHTML;
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}
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this.backgroundColor = OpenLayers.Popup.COLOR;
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this.opacity = OpenLayers.Popup.OPACITY;
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this.border = OpenLayers.Popup.BORDER;
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this.div = OpenLayers.Util.createDiv(this.id, null, null,
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null, null, null, "hidden");
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this.div.className = 'olPopup';
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this.groupDiv = OpenLayers.Util.createDiv(null, null, null,
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null, "relative", null,
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"hidden");
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var id = this.div.id + "_contentDiv";
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this.contentDiv = OpenLayers.Util.createDiv(id, null, this.size.clone(),
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null, "relative", null,
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"hidden");
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this.contentDiv.className = 'olPopupContent';
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this.groupDiv.appendChild(this.contentDiv);
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this.div.appendChild(this.groupDiv);
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if (closeBox) {
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// close icon
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var closeSize = new OpenLayers.Size(17,17);
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var img = OpenLayers.Util.getImagesLocation() + "close.gif";
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var closeImg = OpenLayers.Util.createAlphaImageDiv(this.id + "_close",
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null,
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closeSize,
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img);
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closeImg.style.right = this.padding + "px";
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closeImg.style.top = this.padding + "px";
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this.groupDiv.appendChild(closeImg);
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var closePopup = function(e) {
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this.hide();
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OpenLayers.Event.stop(e);
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}
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OpenLayers.Event.observe(closeImg, "click",
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closePopup.bindAsEventListener(this));
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}
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this.registerEvents();
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},
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/**
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* Method: destroy
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* nullify references to prevent circular references and memory leaks
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*/
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destroy: function() {
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if (this.map != null) {
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this.map.removePopup(this);
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this.map = null;
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}
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this.events.destroy();
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this.events = null;
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this.div = null;
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},
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/**
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* Method: draw
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* Constructs the elements that make up the popup.
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*
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* Parameters:
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* px - {<OpenLayers.Pixel>} the position the popup in pixels.
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*
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* Returns:
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* {DOMElement} Reference to a div that contains the drawn popup
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*/
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draw: function(px) {
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if (px == null) {
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if ((this.lonlat != null) && (this.map != null)) {
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px = this.map.getLayerPxFromLonLat(this.lonlat);
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}
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}
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this.setSize();
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this.setBackgroundColor();
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this.setOpacity();
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this.setBorder();
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this.setContentHTML();
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this.moveTo(px);
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return this.div;
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},
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/**
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* Method: updatePosition
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* if the popup has a lonlat and its map members set,
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* then have it move itself to its proper position
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*/
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updatePosition: function() {
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if ((this.lonlat) && (this.map)) {
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var px = this.map.getLayerPxFromLonLat(this.lonlat);
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this.moveTo(px);
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}
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},
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/**
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* Method: moveTo
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*
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* Parameters:
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* px - {<OpenLayers.Pixel>} the top and left position of the popup div.
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*/
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moveTo: function(px) {
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if ((px != null) && (this.div != null)) {
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this.div.style.left = px.x + "px";
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this.div.style.top = px.y + "px";
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}
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},
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/**
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* Method: visible
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*
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* Returns:
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* {Boolean} Boolean indicating whether or not the popup is visible
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*/
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visible: function() {
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return OpenLayers.Element.visible(this.div);
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},
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/**
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* Method: toggle
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* Toggles visibility of the popup.
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*/
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toggle: function() {
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OpenLayers.Element.toggle(this.div);
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},
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/**
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* Method: show
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* Makes the popup visible.
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*/
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show: function() {
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OpenLayers.Element.show(this.div);
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},
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/**
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* Method: hide
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* Makes the popup invisible.
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*/
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hide: function() {
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OpenLayers.Element.hide(this.div);
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},
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/**
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* Method: setSize
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* Used to adjust the size of the popup.
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*
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* Parameters:
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* size - {<OpenLayers.Size>} the new size of the popup in pixels.
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*/
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setSize:function(size) {
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if (size != undefined) {
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this.size = size;
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}
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if (this.div != null) {
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this.div.style.width = this.size.w + "px";
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this.div.style.height = this.size.h + "px";
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}
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if (this.contentDiv != null){
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this.contentDiv.style.width = this.size.w + "px";
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this.contentDiv.style.height = this.size.h + "px";
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}
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},
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/**
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* Method: setBackgroundColor
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* Sets the background color of the popup.
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* Parameters:
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* color - {String} the background color. eg "#FFBBBB"
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*/
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setBackgroundColor:function(color) {
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if (color != undefined) {
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this.backgroundColor = color;
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}
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if (this.div != null) {
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this.div.style.backgroundColor = this.backgroundColor;
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}
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},
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/**
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* Method: setOpacity
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* Sets the opacity of the popup.
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*
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* Parameters:
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* opacity - {float} A value between 0.0 (transparent) and 1.0 (solid).
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*/
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setOpacity:function(opacity) {
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if (opacity != undefined) {
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this.opacity = opacity;
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}
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if (this.div != null) {
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// for Mozilla and Safari
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this.div.style.opacity = this.opacity;
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// for IE
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this.div.style.filter = 'alpha(opacity=' + this.opacity*100 + ')';
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}
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},
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/**
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* Method: setBorder
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* Sets the border style of the popup.
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*
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* Parameters:
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* border - {String} The border style value. eg 2px
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*/
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setBorder:function(border) {
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if (border != undefined) {
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this.border = border;
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}
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if (this.div != null) {
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this.div.style.border = this.border;
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}
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},
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/**
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* Method: setContentHTML
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* Allows the user to set the HTML content of the popup.
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*
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* Parameters:
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* contentHTML - {String} HTML for the div.
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*/
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setContentHTML:function(contentHTML) {
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if (contentHTML != null) {
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this.contentHTML = contentHTML;
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}
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if (this.contentDiv != null) {
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this.contentDiv.innerHTML = this.contentHTML;
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}
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},
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/**
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* Method: registerEvents
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* Registers events on the popup.
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*
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* Do this in a separate function so that subclasses can
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* choose to override it if they wish to deal differently
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* with mouse events
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*
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* Note in the following handler functions that some special
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* care is needed to deal correctly with mousing and popups.
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*
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* Because the user might select the zoom-rectangle option and
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* then drag it over a popup, we need a safe way to allow the
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* mousemove and mouseup events to pass through the popup when
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* they are initiated from outside.
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*
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* Otherwise, we want to essentially kill the event propagation
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* for all other events, though we have to do so carefully,
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* without disabling basic html functionality, like clicking on
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* hyperlinks or drag-selecting text.
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*/
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registerEvents:function() {
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this.events = new OpenLayers.Events(this, this.div, null, true);
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this.events.register("mousedown", this, this.onmousedown);
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this.events.register("mousemove", this, this.onmousemove);
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this.events.register("mouseup", this, this.onmouseup);
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this.events.register("click", this, this.onclick);
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this.events.register("mouseout", this, this.onmouseout);
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this.events.register("dblclick", this, this.ondblclick);
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},
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/**
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* Method: onmousedown
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* When mouse goes down within the popup, make a note of
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* it locally, and then do not propagate the mousedown
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* (but do so safely so that user can select text inside)
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*
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* Parameters:
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* evt - {Event}
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*/
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onmousedown: function (evt) {
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this.mousedown = true;
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OpenLayers.Event.stop(evt, true);
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},
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/**
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* Method: onmousemove
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* If the drag was started within the popup, then
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* do not propagate the mousemove (but do so safely
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* so that user can select text inside)
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*
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* Parameters:
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* evt - {Event}
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*/
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onmousemove: function (evt) {
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if (this.mousedown) {
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OpenLayers.Event.stop(evt, true);
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}
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},
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/**
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* Method: onmouseup
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* When mouse comes up within the popup, after going down
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* in it, reset the flag, and then (once again) do not
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* propagate the event, but do so safely so that user can
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* select text inside
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*
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* Parameters:
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* evt - {Event}
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*/
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onmouseup: function (evt) {
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if (this.mousedown) {
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this.mousedown = false;
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OpenLayers.Event.stop(evt, true);
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}
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},
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/**
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* Method: onclick
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* Ignore clicks, but allowing default browser handling
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*
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* Parameters:
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* evt - {Event}
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*/
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onclick: function (evt) {
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OpenLayers.Event.stop(evt, true);
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},
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/**
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* Method: onmouseout
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* When mouse goes out of the popup set the flag to false so that
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* if they let go and then drag back in, we won't be confused.
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*
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* Parameters:
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* evt - {Event}
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*/
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onmouseout: function (evt) {
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this.mousedown = false;
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},
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/**
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* Method: ondblclick
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* Ignore double-clicks, but allowing default browser handling
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*
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* Parameters:
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* evt - {Event}
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*/
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ondblclick: function (evt) {
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OpenLayers.Event.stop(evt, true);
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},
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CLASS_NAME: "OpenLayers.Popup"
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});
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OpenLayers.Popup.WIDTH = 200;
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OpenLayers.Popup.HEIGHT = 200;
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OpenLayers.Popup.COLOR = "white";
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OpenLayers.Popup.OPACITY = 1;
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OpenLayers.Popup.BORDER = "0px";
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