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[rails.git] / public / lib / OpenLayers / Popup / AnchoredBubble.js
1 /* Copyright (c) 2006 MetaCarta, Inc., published under the BSD license.
2  * See http://svn.openlayers.org/trunk/openlayers/license.txt for the full
3  * text of the license. */
4 // @require: OpenLayers/Popup/Anchored.js\r
5 \r
6 /**\r
7 * @class\r
8 */\r
9 OpenLayers.Popup.AnchoredBubble = Class.create();\r
10 \r
11 //Border space for the rico corners\r
12 OpenLayers.Popup.AnchoredBubble.CORNER_SIZE = 5;\r
13 \r
14 OpenLayers.Popup.AnchoredBubble.prototype =\r
15    Object.extend( new OpenLayers.Popup.Anchored(), {\r
16 \r
17     /** @type DOMElement */\r
18     contentDiv:null,\r
19 \r
20     \r
21     /** \r
22     * @constructor\r
23     * \r
24     * @param {String} id\r
25     * @param {OpenLayers.LonLat} lonlat\r
26     * @param {OpenLayers.Size} size\r
27     * @param {String} contentHTML\r
28     * @param {Object} anchor  Object which must expose a \r
29     *                         - 'size' (OpenLayers.Size) and \r
30     *                         - 'offset' (OpenLayers.Pixel) \r
31     *                         (this is generally an OpenLayers.Icon)\r
32     */\r
33     initialize:function(id, lonlat, size, contentHTML, anchor) {\r
34         OpenLayers.Popup.Anchored.prototype.initialize.apply(this, arguments);\r
35     },\r
36 \r
37     /** \r
38     * @param {OpenLayers.Pixel} px\r
39     * \r
40     * @returns Reference to a div that contains the drawn popup\r
41     * @type DOMElement\r
42     */\r
43     draw: function(px) {\r
44         \r
45         OpenLayers.Popup.Anchored.prototype.draw.apply(this, arguments);\r
46 \r
47         // make the content Div\r
48         var contentSize = this.size.copyOf();\r
49         contentSize.h -= (2 * OpenLayers.Popup.AnchoredBubble.CORNER_SIZE);\r
50 \r
51         var id = this.div.id + "-contentDiv";\r
52         this.contentDiv = OpenLayers.Util.createDiv(id, null, contentSize, \r
53                                                     null, "relative", null,\r
54                                                     "hidden");\r
55         this.div.appendChild(this.contentDiv);\r
56         this.setContentHTML();\r
57         \r
58         this.setRicoCorners(true);\r
59         \r
60         //set the popup color and opacity           \r
61         this.setBackgroundColor(); \r
62         this.setOpacity();\r
63 \r
64         return this.div;\r
65     },\r
66 \r
67     /**\r
68     * @param {OpenLayers.Size} size\r
69     */\r
70     setSize:function(size) { \r
71         OpenLayers.Popup.Anchored.prototype.setSize.apply(this, arguments);\r
72         \r
73         if (this.contentDiv != null) {\r
74 \r
75             var contentSize = this.size.copyOf();\r
76             contentSize.h -= (2 * OpenLayers.Popup.AnchoredBubble.CORNER_SIZE);\r
77     \r
78             this.contentDiv.style.height = contentSize.h + "px";\r
79             \r
80             //size has changed - must redo corners        \r
81             this.setRicoCorners(false);\r
82         }\r
83     },  \r
84 \r
85     /**\r
86      * @param {String} color\r
87      */\r
88     setBackgroundColor:function(color) { \r
89         if (color != undefined) {\r
90             this.backgroundColor = color; \r
91         }\r
92         \r
93         if (this.div != null) {\r
94             if (this.contentDiv != null) {\r
95                 this.div.style.background = "transparent";\r
96                 Rico.Corner.changeColor(this.contentDiv, this.backgroundColor);\r
97             }\r
98         }\r
99     },  \r
100     \r
101     /**\r
102      * @param {float} opacity\r
103      */\r
104     setOpacity:function(opacity) { \r
105         if (opacity != undefined) {\r
106             this.opacity = opacity; \r
107         }\r
108         \r
109         if (this.div != null) {\r
110             if (this.contentDiv != null) {\r
111             Rico.Corner.changeOpacity(this.contentDiv, this.opacity);\r
112             }\r
113         }\r
114     },  \r
115  \r
116     /** Bubble Popups can not have a border\r
117      * \r
118      * @param {int} border\r
119      */\r
120     setBorder:function(border) { \r
121         this.border = 0;\r
122     },      \r
123  \r
124     /**\r
125      * @param {String} contentHTML\r
126      */\r
127     setContentHTML:function(contentHTML) {\r
128         if (contentHTML != null) {\r
129             this.contentHTML = contentHTML;\r
130         }\r
131         \r
132         if (this.contentDiv != null) {\r
133             this.contentDiv.innerHTML = this.contentHTML;\r
134         }    \r
135     },\r
136     \r
137     /** \r
138      * @private\r
139      * \r
140      * @param {Boolean} firstTime Is this the first time the corners are being\r
141      *                             rounded?\r
142      * \r
143      * update the rico corners according to the popup's\r
144      * current relative postion \r
145      */\r
146     setRicoCorners:function(firstTime) {\r
147     \r
148         var corners = this.getCornersToRound(this.relativePosition);\r
149         var options = {corners: corners,\r
150                          color: this.backgroundColor,\r
151                        bgColor: "transparent",\r
152                          blend: false};\r
153 \r
154         if (firstTime) {\r
155             Rico.Corner.round(this.div, options);\r
156         } else {\r
157             Rico.Corner.reRound(this.contentDiv, options);\r
158             //set the popup color and opacity\r
159             this.setBackgroundColor(); \r
160             this.setOpacity();\r
161         }\r
162     },\r
163 \r
164     /** \r
165      * @private\r
166      * \r
167      * @returns The proper corners string ("tr tl bl br") for rico\r
168      *           to round\r
169      * @type String\r
170      */\r
171     getCornersToRound:function() {\r
172 \r
173         var corners = ['tl', 'tr', 'bl', 'br'];\r
174 \r
175         //we want to round all the corners _except_ the opposite one. \r
176         var corner = OpenLayers.Bounds.oppositeQuadrant(this.relativePosition);\r
177         corners.remove(corner);\r
178 \r
179         return corners.join(" ");\r
180     },\r
181 \r
182     CLASS_NAME: "OpenLayers.Popup.AnchoredBubble"\r
183 });\r