--- a/labs/openlayers/lib/OpenLayers/Control/Panel.js +++ b/labs/openlayers/lib/OpenLayers/Control/Panel.js @@ -1,1 +1,372 @@ - +/* 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.Panel + * The Panel control is a container for other controls. With it toolbars + * may be composed. + * + * Inherits from: + * - <OpenLayers.Control> + */ +OpenLayers.Control.Panel = OpenLayers.Class(OpenLayers.Control, { + /** + * Property: controls + * {Array(<OpenLayers.Control>)} + */ + controls: null, + + /** + * APIProperty: autoActivate + * {Boolean} Activate the control when it is added to a map. Default is + * true. + */ + autoActivate: true, + + /** + * APIProperty: defaultControl + * {<OpenLayers.Control>} The control which is activated when the control is + * activated (turned on), which also happens at instantiation. + * If <saveState> is true, <defaultControl> will be nullified after the + * first activation of the panel. + */ + defaultControl: null, + + /** + * APIProperty: saveState + * {Boolean} If set to true, the active state of this panel's controls will + * be stored on panel deactivation, and restored on reactivation. Default + * is false. + */ + saveState: false, + + /** + * Property: activeState + * {Object} stores the active state of this panel's controls. + */ + activeState: null, + + /** + * Constructor: OpenLayers.Control.Panel + * Create a new control panel. + * + * Each control in the panel is represented by an icon. When clicking + * on an icon, the <activateControl> method is called. + * + * Specific properties for controls on a panel: + * type - {Number} One of <OpenLayers.Control.TYPE_TOOL>, + * <OpenLayers.Control.TYPE_TOGGLE>, <OpenLayers.Control.TYPE_BUTTON>. + * If not provided, <OpenLayers.Control.TYPE_TOOL> is assumed. + * title - {string} Text displayed when mouse is over the icon that + * represents the control. + * + * The <OpenLayers.Control.type> of a control determines the behavior when + * clicking its icon: + * <OpenLayers.Control.TYPE_TOOL> - The control is activated and other + * controls of this type in the same panel are deactivated. This is + * the default type. + * <OpenLayers.Control.TYPE_TOGGLE> - The active state of the control is + * toggled. + * <OpenLayers.Control.TYPE_BUTTON> - The + * <OpenLayers.Control.Button.trigger> method of the control is called, + * but its active state is not changed. + * + * If a control is <OpenLayers.Control.active>, it will be drawn with the + * olControl[Name]ItemActive class, otherwise with the + * olControl[Name]ItemInactive class. + * + * Parameters: + * options - {Object} An optional object whose properties will be used + * to extend the control. + */ + initialize: function(options) { + OpenLayers.Control.prototype.initialize.apply(this, [options]); + this.controls = []; + this.activeState = {}; + }, + + /** + * APIMethod: destroy + */ + destroy: function() { + OpenLayers.Control.prototype.destroy.apply(this, arguments); + for(var i = this.controls.length - 1 ; i >= 0; i--) { + if(this.controls[i].events) { + this.controls[i].events.un({ + "activate": this.redraw, + "deactivate": this.redraw, + scope: this + }); + } + OpenLayers.Event.stopObservingElement(this.controls[i].panel_div); + this.controls[i].panel_div = null; + } + this.activeState = null; + }, + + /** + * APIMethod: activate + */ + activate: function() { + if (OpenLayers.Control.prototype.activate.apply(this, arguments)) { + var control; + for (var i=0, len=this.controls.length; i<len; i++) { + control = this.controls[i]; + if (control === this.defaultControl || + (this.saveState && this.activeState[control.id])) { + control.activate(); + } + } + if (this.saveState === true) { + this.defaultControl = null; + } + this.redraw(); + return true; + } else { + return false; + } + }, + + /** + * APIMethod: deactivate + */ + deactivate: function() { + if (OpenLayers.Control.prototype.deactivate.apply(this, arguments)) { + var control; + for (var i=0, len=this.controls.length; i<len; i++) { + control = this.controls[i]; + this.activeState[control.id] = control.deactivate(); + } + return true; + } else { + return false; + } + }, + + /** + * Method: draw + * + * Returns: + * {DOMElement} + */ + draw: function() { + OpenLayers.Control.prototype.draw.apply(this, arguments); + this.addControlsToMap(this.controls); + return this.div; + }, + + /** + * Method: redraw + */ + redraw: function() { + if (this.div.children.length>0) { + for (var l=this.div.children.length, i=l-1 ; i>=0 ; i--) { + this.div.removeChild(this.div.children[i]); + } + } + this.div.innerHTML = ""; + if (this.active) { + for (var i=0, len=this.controls.length; i<len; i++) { + var element = this.controls[i].panel_div; + if (this.controls[i].active) { + element.className = this.controls[i].displayClass + "ItemActive"; + } else { + element.className = this.controls[i].displayClass + "ItemInactive"; + } + this.div.appendChild(element); + } + } + }, + + /** + * APIMethod: activateControl + * This method is called when the user click on the icon representing a + * control in the panel. + * + * Parameters: + * control - {<OpenLayers.Control>} + */ + activateControl: function (control) { + if (!this.active) { return false; } + if (control.type == OpenLayers.Control.TYPE_BUTTON) { + control.trigger(); + this.redraw(); + return; + } + if (control.type == OpenLayers.Control.TYPE_TOGGLE) { + if (control.active) { + control.deactivate(); + } else { + control.activate(); + } + this.redraw(); + return; + } + var c; + for (var i=0, len=this.controls.length; i<len; i++) { + c = this.controls[i]; + if (c != control && + (c.type === OpenLayers.Control.TYPE_TOOL || c.type == null)) { + c.deactivate(); + } + } + control.activate(); + }, + + /** + * APIMethod: addControls + * To build a toolbar, you add a set of controls to it. addControls + * lets you add a single control or a list of controls to the + * Control Panel. + * + * Parameters: + * controls - {<OpenLayers.Control>} Controls to add in the panel. + */ + addControls: function(controls) { + if (!(controls instanceof Array)) { + controls = [controls]; + } + this.controls = this.controls.concat(controls); + + // Give each control a panel_div which will be used later. + // Access to this div is via the panel_div attribute of the + // control added to the panel. + // Also, stop mousedowns and clicks, but don't stop mouseup, + // since they need to pass through. + for (var i=0, len=controls.length; i<len; i++) { + var element = document.createElement("div"); + controls[i].panel_div = element; + if (controls[i].title != "") { + controls[i].panel_div.title = controls[i].title; + } + OpenLayers.Event.observe(controls[i].panel_div, "click", + OpenLayers.Function.bind(this.onClick, this, controls[i])); + OpenLayers.Event.observe(controls[i].panel_div, "dblclick", + OpenLayers.Function.bind(this.onDoubleClick, this, controls[i])); + OpenLayers.Event.observe(controls[i].panel_div, "mousedown", + OpenLayers.Function.bindAsEventListener(OpenLayers.Event.stop)); + } + + if (this.map) { // map.addControl() has already been called on the panel + this.addControlsToMap(controls); + this.redraw(); + } + }, + + /** + * Method: addControlsToMap + * Only for internal use in draw() and addControls() methods. + * + * Parameters: + * controls - {Array(<OpenLayers.Control>)} Controls to add into map. + */ + addControlsToMap: function (controls) { + var control; + for (var i=0, len=controls.length; i<len; i++) { + control = controls[i]; + if (control.autoActivate === true) { + control.autoActivate = false; + this.map.addControl(control); + control.autoActivate = true; + } else { + this.map.addControl(control); + control.deactivate(); + } + control.events.on({ + "activate": this.redraw, + "deactivate": this.redraw, + scope: this + }); + } + }, + + /** + * Method: onClick + */ + onClick: function (ctrl, evt) { + OpenLayers.Event.stop(evt ? evt : window.event); + this.activateControl(ctrl); + }, + + /** + * Method: onDoubleClick + */ + onDoubleClick: function(ctrl, evt) { + OpenLayers.Event.stop(evt ? evt : window.event); + }, + + /** + * APIMethod: getControlsBy + * Get a list of controls with properties matching the given criteria. + * + * Parameter: + * property - {String} A control property to be matched. + * match - {String | Object} A string to match. Can also be a regular + * expression literal or object. In addition, it can be any object + * with a method named test. For reqular expressions or other, if + * match.test(control[property]) evaluates to true, the control will be + * included in the array returned. If no controls are found, an empty + * array is returned. + * + * Returns: + * {Array(<OpenLayers.Control>)} A list of controls matching the given criteria. + * An empty array is returned if no matches are found. + */ + getControlsBy: function(property, match) { + var test = (typeof match.test == "function"); + var found = OpenLayers.Array.filter(this.controls, function(item) { + return item[property] == match || (test && match.test(item[property])); + }); + return found; + }, + + /** + * APIMethod: getControlsByName + * Get a list of contorls with names matching the given name. + * + * Parameter: + * match - {String | Object} A control name. The name can also be a regular + * expression literal or object. In addition, it can be any object + * with a method named test. For reqular expressions or other, if + * name.test(control.name) evaluates to true, the control will be included + * in the list of controls returned. If no controls are found, an empty + * array is returned. + * + * Returns: + * {Array(<OpenLayers.Control>)} A list of controls matching the given name. + * An empty array is returned if no matches are found. + */ + getControlsByName: function(match) { + return this.getControlsBy("name", match); + }, + + /** + * APIMethod: getControlsByClass + * Get a list of controls of a given type (CLASS_NAME). + * + * Parameter: + * match - {String | Object} A control class name. The type can also be a + * regular expression literal or object. In addition, it can be any + * object with a method named test. For reqular expressions or other, + * if type.test(control.CLASS_NAME) evaluates to true, the control will + * be included in the list of controls returned. If no controls are + * found, an empty array is returned. + * + * Returns: + * {Array(<OpenLayers.Control>)} A list of controls matching the given type. + * An empty array is returned if no matches are found. + */ + getControlsByClass: function(match) { + return this.getControlsBy("CLASS_NAME", match); + }, + + CLASS_NAME: "OpenLayers.Control.Panel" +}); + +