occaecatidicta
Version:
133 lines (118 loc) • 4.19 kB
JavaScript
/*
* Copyright (C) 2011 Google Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following disclaimer
* in the documentation and/or other materials provided with the
* distribution.
* * Neither the name of Google Inc. nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
/**
* @constructor
* @extends {WebInspector.Object}
*/
WebInspector.HandlerRegistry = function(setting)
{
WebInspector.Object.call(this);
this._handlers = {};
this._setting = setting;
this._activeHandler = this._setting.get();
}
WebInspector.HandlerRegistry.prototype = {
get handlerNames()
{
return Object.getOwnPropertyNames(this._handlers);
},
get activeHandler()
{
return this._activeHandler;
},
set activeHandler(value)
{
this._activeHandler = value;
this._setting.set(value);
},
/**
* @param {Object} data
*/
dispatch: function(data)
{
return this.dispatchToHandler(this._activeHandler, data);
},
/**
* @param {string} name
* @param {Object} data
*/
dispatchToHandler: function(name, data)
{
var handler = this._handlers[name];
var result = handler && handler(data);
return !!result;
},
registerHandler: function(name, handler)
{
this._handlers[name] = handler;
this.dispatchEventToListeners(WebInspector.HandlerRegistry.EventTypes.HandlersUpdated);
},
unregisterHandler: function(name)
{
delete this._handlers[name];
this.dispatchEventToListeners(WebInspector.HandlerRegistry.EventTypes.HandlersUpdated);
}
}
WebInspector.HandlerRegistry.EventTypes = {
HandlersUpdated: "HandlersUpdated"
}
WebInspector.HandlerRegistry.prototype.__proto__ = WebInspector.Object.prototype;
/**
* @constructor
*/
WebInspector.HandlerSelector = function(handlerRegistry)
{
this._handlerRegistry = handlerRegistry;
this.element = document.createElement("select");
this.element.addEventListener("change", this._onChange.bind(this), false);
this._update();
this._handlerRegistry.addEventListener(WebInspector.HandlerRegistry.EventTypes.HandlersUpdated, this._update.bind(this));
}
WebInspector.HandlerSelector.prototype =
{
_update: function()
{
this.element.removeChildren();
var names = this._handlerRegistry.handlerNames;
var activeHandler = this._handlerRegistry.activeHandler;
for (var i = 0; i < names.length; ++i) {
var option = document.createElement("option");
option.textContent = names[i];
option.selected = activeHandler === names[i];
this.element.appendChild(option);
}
this.element.disabled = names.length <= 1;
},
_onChange: function(event)
{
var value = event.target.value;
this._handlerRegistry.activeHandler = value;
}
}