Uproszczenie implementacji wzorca observer.

[redakcja.git] / project / static / js / app.js

diff --git a/project/static/js/app.js b/project/static/js/app.js
index 73ce107..7586f3f 100644 (file)
--- a/project/static/js/app.js
+++ b/project/static/js/app.js
@@ -100,8 +100,134 @@ var panel_hooks;
  
 var panels = [];
 
+var documentsUrl = '/api/documents/';
+
+
+var Model = Class.extend({
+  observers: {},
+  
+  init: function() {},
+  
+  signal: function(event, data) {
+    console.log('signal', this, event, data);
+    if (this.observers[event]) {
+      for (observer in this.observers[event]) {
+        observer.handle(event, data);
+      }
+    };
+    return this;
+  },
+  
+  addObserver: function(observer, event) {
+    if (!this.observers[event]) {
+      this.observers[event] = [];
+    }
+    this.observers[event][observer] = observer;
+    return this;
+  },
+  
+  removeObserver: function(observer, event) {
+    if (!event) {
+      for (e in this.observers) {
+        this.removeObserver(observer, e);
+      }
+    } else {
+      delete this.observers[event][observer];
+    }
+    return this;
+  }
+});
+
+
+var XMLModel = Model.extend({
+  parent: null,
+  data: null,
+  serverURL: null,
+  
+  init: function(parent, serverURL) {
+    this.parent = parent;
+    this.serverURL = serverURL;
+  },
+  
+  reload: function() {
+    $.ajax({
+      url: this.serverURL,
+      dataType: 'text',
+      success: this.reloadSucceeded.bind(this)
+    });
+  },
+  
+  reloadSucceeded: function(data) {
+    this.data = data;
+    this.signal('reloaded');
+  },
+})
+
+var DocumentModel = Model.extend({
+  data: null, // name, text_url, latest_rev, latest_shared_rev, parts_url, dc_url, size
+  xml: null,
+  html: null,
+  
+  init: function() {},
+  
+  getData: function(callback) {
+    console.log('get:', documentsUrl + fileId);
+    $.ajax({
+      cache: false,
+      url: documentsUrl + fileId,
+      dataType: 'json',
+      success: this.successfulGetData.bind(this, callback)
+    });
+  },
+  
+  successfulGetData: function(callback, data) {
+    this.data = data;
+    this.signal('changed');
+    if (callback) {
+      (callback.bind(this))(data);
+    }
+  },
+  
+  load: function(key) {
+    if (!this.data) {
+      this.getData(function() { this.load(key); }.bind(this));
+    } else {
+      console.log('load', key, this.data[key + 'url']);
+      $.ajax({
+        url: this.data[key + '_url'],
+        dataType: 'text',
+        success: this.loadSucceeded.bind(this, key)
+      });
+    }
+  },
+  
+  loadSucceeded: function(key, data) {
+    console.log('loadSucceeded', key, data);
+    this.set(key, data);
+  },
+  
+  get: function(key) {
+    console.log(this[key]);
+    if (this[key]) {
+      return this[key]
+    } else {
+      this.load(key);
+      return '';
+    }
+  },
+  
+  set: function(key, value) {
+    this[key] = value;
+    this.signal(key + '-changed');
+    return this;
+  }
+});
+
+var leftPanelView, rightPanelContainer, doc;
+
 $(function() {
-  var splitView = new SplitView('#splitview');
-  var leftPanelView = new PanelContainerView('#left-panel-container');
-  var rightPanelContainer = new PanelContainerView('#right-panel-container');
+  doc = new DocumentModel();
+  var splitView = new SplitView('#splitview', doc);
+  leftPanelView = new PanelContainerView('#left-panel-container', doc);
+  rightPanelContainer = new PanelContainerView('#right-panel-container', doc);
 });