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// Copyright 2014 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
var EventBindings = require('event_bindings');
var CreateEvent = function(name) {
var eventOpts = {supportsListeners: true, supportsFilters: true};
return new EventBindings.Event(name, undefined, eventOpts);
};
var EXTENSION_OPTIONS_EVENTS = {
'close': {
evt: CreateEvent('extensionOptionsInternal.onClose'),
fields: []
},
'load': {
evt: CreateEvent('extensionOptionsInternal.onLoad'),
fields: []
},
'sizechanged': {
evt: CreateEvent('extensionOptionsInternal.onSizeChanged'),
customHandler: function(handler, event, extensionOptionsEvent) {
handler.handleSizeChangedEvent(event, extensionOptionsEvent);
},
fields:['newWidth', 'newHeight', 'oldWidth', 'oldHeight']
}
}
/**
* @constructor
*/
function ExtensionOptionsEvents(extensionOptionsInternal, viewInstanceId) {
this.extensionOptionsInternal = extensionOptionsInternal;
this.viewInstanceId = viewInstanceId;
this.setup();
}
// Sets up events.
ExtensionOptionsEvents.prototype.setup = function() {
for (var eventName in EXTENSION_OPTIONS_EVENTS) {
this.setupEvent(eventName, EXTENSION_OPTIONS_EVENTS[eventName]);
}
};
ExtensionOptionsEvents.prototype.setupEvent = function(name, info) {
var self = this;
info.evt.addListener(function(e) {
var details = {bubbles:true};
if (info.cancelable)
details.cancelable = true;
var extensionOptionsEvent = new Event(name, details);
$Array.forEach(info.fields, function(field) {
if (e.hasOwnProperty(field)) {
extensionOptionsEvent[field] = e[field];
}
});
if (info.customHandler) {
info.customHandler(self, e, extensionOptionsEvent);
return;
}
self.extensionOptionsInternal.dispatchEvent(extensionOptionsEvent);
}, {instanceId: self.viewInstanceId});
this.extensionOptionsInternal.setupEventProperty(name);
};
ExtensionOptionsEvents.prototype.handleSizeChangedEvent = function(
event, extensionOptionsEvent) {
this.extensionOptionsInternal.onSizeChanged(extensionOptionsEvent.newWidth,
extensionOptionsEvent.newHeight,
extensionOptionsEvent.oldWidth,
extensionOptionsEvent.oldHeight);
this.extensionOptionsInternal.dispatchEvent(extensionOptionsEvent);
}
exports.ExtensionOptionsEvents = ExtensionOptionsEvents;
exports.CreateEvent = CreateEvent;
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