dojo.provide("dojox.mobile.app.SceneController");
dojo.experimental("dojox.mobile.app.SceneController");
dojo.require("dojox.mobile._base");
(function(){
var app = dojox.mobile.app;
var templates = {};
dojo.declare("dojox.mobile.app.SceneController", dojox.mobile.View, {
stageController: null,
keepScrollPos: false,
init: function(sceneName, params){
// summary:
// Initializes the scene by loading the HTML template and code, if it has
// not already been loaded
this.sceneName = sceneName;
this.params = params;
var templateUrl = app.resolveTemplate(sceneName);
this._deferredInit = new dojo.Deferred();
if(templates[sceneName]){
// If the template has been cached, do not load it again.
this._setContents(templates[sceneName]);
}else{
// Otherwise load the template
dojo.xhrGet({
url: templateUrl,
handleAs: "text"
}).addCallback(dojo.hitch(this, this._setContents));
}
return this._deferredInit;
},
_setContents: function(templateHtml){
// summary:
// Sets the content of the View, and invokes either the loading or
// initialization of the scene assistant.
templates[this.sceneName] = templateHtml;
this.domNode.innerHTML = "
" + templateHtml + "
";
var sceneAssistantName = "";
var nameParts = this.sceneName.split("-");
for(var i = 0; i < nameParts.length; i++){
sceneAssistantName += nameParts[i].substring(0, 1).toUpperCase()
+ nameParts[i].substring(1);
}
sceneAssistantName += "Assistant";
this.sceneAssistantName = sceneAssistantName;
var _this = this;
dojox.mobile.app.loadResourcesForScene(this.sceneName, function(){
console.log("All resources for ",_this.sceneName," loaded");
var assistant;
if(typeof(dojo.global[sceneAssistantName]) != "undefined"){
_this._initAssistant();
}else{
var assistantUrl = app.resolveAssistant(_this.sceneName);
dojo.xhrGet({
url: assistantUrl,
handleAs: "text"
}).addCallback(function(text){
try{
dojo.eval(text);
}catch(e){
console.log("Error initializing code for scene " + _this.sceneName
+ '. Please check for syntax errors');
throw e;
}
_this._initAssistant();
});
}
});
},
_initAssistant: function(){
// summary:
// Initializes the scene assistant. At this point, the View is
// populated with the HTML template, and the scene assistant type
// is declared.
console.log("Instantiating the scene assistant " + this.sceneAssistantName);
var cls = dojo.getObject(this.sceneAssistantName);
if(!cls){
throw Error("Unable to resolve scene assistant "
+ this.sceneAssistantName);
}
this.assistant = new cls(this.params);
this.assistant.controller = this;
this.assistant.domNode = this.domNode.firstChild;
this.assistant.setup();
this._deferredInit.callback();
},
query: function(selector, node){
// summary:
// Queries for DOM nodes within either the node passed in as an argument
// or within this view.
return dojo.query(selector, node || this.domNode)
},
parse: function(node){
var widgets = this._widgets =
dojox.mobile.parser.parse(node || this.domNode, {
controller: this
});
// Tell all widgets what their controller is.
for(var i = 0; i < widgets.length; i++){
widgets[i].set("controller", this);
}
},
getWindowSize: function(){
// TODO, this needs cross browser testing
return {
w: dojo.global.innerWidth,
h: dojo.global.innerHeight
}