initial commit

libjs/wController/image.js

@@ -0,0 +1,69 @@
+"use strict";
+
+var Address = require("../wType/address");
+
+var Controller = require("./controller");
+var File = require("./file/file");
+
+var Image = Controller.inherit({
+    "className": "Image",
+    "constructor": function(addr) {
+        Controller.fn.constructor.call(this, addr);
+        
+        this.data = undefined;
+        this._hasCtrl = false;
+        this._fileCtrl = undefined;
+        this._need = 0;
+        
+        this.addHandler("get");
+    },
+    "dontNeedData": function() {
+        --this._need;
+    },
+    "getMimeType": function () {
+        return this._fileCtrl.getMimeType();
+    },
+    "hasData": function() {
+        if (this._hasCtrl) {
+            return this._fileCtrl.hasData();
+        }
+        return false;
+    },
+    "_h_get": function(ev) {
+        var data = ev.getData();
+        
+        if (this._hasCtrl) {
+            this.removeForeignController(this._fileCtrl);
+            this._fileCtrl.destructor();
+            delete this._fileCtrl;
+            this._hasCtrl = false;
+        }
+        var strId = data.at("data").toString();
+        if (strId !== "0") {
+            this._fileCtrl = new File(new Address(["images", strId]));
+            this.addForeignController("Corax", this._fileCtrl);
+            
+            this._fileCtrl.on("data", this._onControllerData, this);
+            
+            this._hasCtrl = true;
+            if (this._need > 0) {
+                this._fileCtrl.needData();
+            }
+        } else {
+            this.trigger("clear");
+        }
+    },
+    "needData": function() {
+        if (this._need === 0 && this._hasCtrl) {
+            this._fileCtrl.needData();
+        }
+        ++this._need;
+    },
+    "_onControllerData": function() {
+        this.data = this._fileCtrl.data;
+        
+        this.trigger("data");
+    }
+});
+
+module.exports = Image;