笔记信息, 历史记录, 提示, 附件优化

https://github.com/leanote/leanote/issues/224

public/js/common.js

@@ -28,6 +28,54 @@ var MarkdownEditor;
 var ScrollLink;
 var MD;
 
+//-------------
+// 全局事件机制
+
+$.extend(LEA, {
+	_eventCallbacks: {},
+	_listen: function(type, callback) {
+        var callbacks = this._eventCallbacks[type] || (this._eventCallbacks[type] = []);
+        callbacks.push(callback);
+    },
+    // on('a b', function(params) {})
+    on: function(name, callback) {
+        var names = name.split(/\s+/);
+        for (var i = 0; i < names.length; ++i) {
+        	this._listen(names[i], callback);
+        }
+        return this;
+    },
+    // off('a b', function(params) {})
+    off: function(name, callback) {
+        var types = name.split(/\s+/);
+        var i, j, callbacks, removeIndex;
+        for (i = 0; i < types.length; i++) {
+            callbacks = this._eventCallbacks[types[i].toLowerCase()];
+            if (callbacks) {
+                removeIndex = null;
+                for (j = 0; j < callbacks.length; j++) {
+                    if (callbacks[j] == callback) {
+                        removeIndex = j;
+                    }
+                }
+                if (removeIndex !== null) {
+                    callbacks.splice(removeIndex, 1);
+                }
+            }
+        }
+    },
+    // LEA.trigger('a', {});
+    trigger: function(type, params) {
+        var callbacks = this._eventCallbacks[type] || [];
+        if (callbacks.length === 0) {
+            return;
+        }
+        for (var i = 0; i < callbacks.length; i++) {
+            callbacks[i].call(this, params);
+        }
+    }
+});
+
 //---------------------
 // 公用方法
 
@@ -829,10 +877,11 @@ function hideLoading() {
 }
 
 // 注销, 先清空cookie
-function setCookie(c_name, value, expiredays){
+function setCookie(c_name, value, expiredays) {
 	var exdate = new Date();
 	exdate.setDate(exdate.getDate() + expiredays);
-	document.cookie = c_name+ "=" + escape(value) + ((expiredays==null) ? "" : ";expires="+exdate.toGMTString());
+	document.cookie = c_name+ "=" + escape(value) + ((expiredays==null) ? "" : ";expires="+exdate.toGMTString()) + 'path=/';
+	document.cookie = c_name+ "=" + escape(value) + ((expiredays==null) ? "" : ";expires="+exdate.toGMTString()) + 'path=/note';
 }
 function logout() {
 	setCookie("LEANOTE_SESSION", '', -1);