ext-air.js

深入浅出extjs的源代码

	},

    exec : function(sql){
	},

	execBy : function(sql, args){
	},

	query : function(sql){
	},

	queryBy : function(sql, args){
	},

    
    isOpen : function(){
		return this.openState;
	},

	getTable : function(name, keyName){
		return new Ext.sql.Table(this, name, keyName);
	},

	createTable : function(o){
		var tableName = o.name;
		var keyName = o.key;
		var fs = o.fields;
		if(!Ext.isArray(fs)){ 
			fs = fs.items;
		}
		var buf = [];
		for(var i = 0, len = fs.length; i < len; i++){
			var f = fs[i], s = f.name;
			switch(f.type){
	            case "int":
	            case "bool":
	            case "boolean":
	                s += ' INTEGER';
	                break;
	            case "float":
	                s += ' REAL';
	                break;
	            default:
	            	s += ' TEXT';
	        }
	        if(f.allowNull === false || f.name == keyName){
	        	s += ' NOT NULL';
	        }
	        if(f.name == keyName){
	        	s += ' PRIMARY KEY';
	        }
	        if(f.unique === true){
	        	s += ' UNIQUE';
	        }

	        buf[buf.length] = s;
	    }
	    var sql = ['CREATE TABLE IF NOT EXISTS ', tableName, ' (', buf.join(','), ')'].join('');
        this.exec(sql);
	}
});


Ext.sql.Connection.getInstance = function(db, config){
    if(Ext.isAir){ 
        return new Ext.sql.AirConnection(config);
    } else { 
        return new Ext.sql.GearsConnection(config);
    }
};
Ext.sql.Table = function(conn, name, keyName){
	this.conn = conn;
	this.name = name;
	this.keyName = keyName;
};

Ext.sql.Table.prototype = {
	update : function(o){
		var clause = this.keyName + " = ?";
		return this.updateBy(o, clause, [o[this.keyName]]);
	},

	updateBy : function(o, clause, args){
		var sql = "UPDATE " + this.name + " set ";
		var fs = [], a = [];
		for(var key in o){
			if(o.hasOwnProperty(key)){
				fs[fs.length] = key + ' = ?';
				a[a.length] = o[key];
			}
		}
		for(var key in args){
			if(args.hasOwnProperty(key)){
				a[a.length] = args[key];
			}
		}
		sql = [sql, fs.join(','), ' WHERE ', clause].join('');
		return this.conn.execBy(sql, a);
	},

	insert : function(o){
		var sql = "INSERT into " + this.name + " ";
		var fs = [], vs = [], a = [];
		for(var key in o){
			if(o.hasOwnProperty(key)){
				fs[fs.length] = key;
				vs[vs.length] = '?';
				a[a.length] = o[key];
			}
		}
		sql = [sql, '(', fs.join(','), ') VALUES (', vs.join(','), ')'].join('');
        return this.conn.execBy(sql, a);
    },

	lookup : function(id){
		return this.selectBy('where ' + this.keyName + " = ?", [id])[0] || null;
	},

	exists : function(id){
		return !!this.lookup(id);
	},

	save : function(o){
		if(this.exists(o[this.keyName])){
            this.update(o);
        }else{
            this.insert(o);
        }
	},

	select : function(clause){
		return this.selectBy(clause, null);
	},

	selectBy : function(clause, args){
		var sql = "select * from " + this.name;
		if(clause){
			sql += ' ' + clause;
		}
		args = args || {};
		return this.conn.queryBy(sql, args);
	},

	remove : function(clause){
		this.deleteBy(clause, null);
	},

	removeBy : function(clause, args){
		var sql = "delete from " + this.name;
		if(clause){
			sql += ' where ' + clause;
		}
		args = args || {};
		this.conn.execBy(sql, args);
	}
};
Ext.sql.Proxy = function(conn, table, keyName, store, readonly){
    Ext.sql.Proxy.superclass.constructor.call(this);
    this.conn = conn;
    this.table = this.conn.getTable(table, keyName);
    this.store = store;

	if (readonly !== true) {
		this.store.on('add', this.onAdd, this);
		this.store.on('update', this.onUpdate, this);
		this.store.on('remove', this.onRemove, this);
	}
};

Ext.sql.Proxy.DATE_FORMAT = 'Y-m-d H:i:s';

Ext.extend(Ext.sql.Proxy, Ext.data.DataProxy, {
    load : function(params, reader, callback, scope, arg){
    	if(!this.conn.isOpen()){ 
    		this.conn.on('open', function(){
    			this.load(params, reader, callback, scope, arg);
    		}, this, {single:true});
    		return;
    	};
    	if(this.fireEvent("beforeload", this, params, reader, callback, scope, arg) !== false){
			var clause = params.where || '';
			var args = params.args || [];
			var group = params.groupBy;
			var sort = params.sort;
			var dir = params.dir;

			if(group || sort){
				clause += ' ORDER BY ';
				if(group && group != sort){
					clause += group + ' ASC, ';
				}
				clause += sort + ' ' + (dir || 'ASC');
			}

			var rs = this.table.selectBy(clause, args);
			this.onLoad({callback:callback, scope:scope, arg:arg, reader: reader}, rs);
        }else{
            callback.call(scope||this, null, arg, false);
        }
    },

    onLoad : function(trans, rs, e, stmt){
        if(rs === false){
    		this.fireEvent("loadexception", this, null, trans.arg, e);
            trans.callback.call(trans.scope||window, null, trans.arg, false);
            return;
    	}
    	var result = trans.reader.readRecords(rs);
        this.fireEvent("load", this, rs, trans.arg);
        trans.callback.call(trans.scope||window, result, trans.arg, true);
    },

    processData : function(o){
    	var fs = this.store.fields;
    	var r = {};
    	for(var key in o){
    		var f = fs.key(key), v = o[key];
			if(f){
				if(f.type == 'date'){
					r[key] = v ? v.format(Ext.sql.Proxy.DATE_FORMAT,10) : '';
				}else if(f.type == 'boolean'){
					r[key] = v ? 1 : 0;
				}else{
					r[key] = v;
				}
			}
		}
		return r;
    },

    onUpdate : function(ds, record){
    	var changes = record.getChanges();
    	var kn = this.table.keyName;
    	this.table.updateBy(this.processData(changes), kn + ' = ?', [record.data[kn]]);
    	record.commit(true);
    },

    onAdd : function(ds, records, index){
    	for(var i = 0, len = records.length; i < len; i++){
        	this.table.insert(this.processData(records[i].data));
    	}
    },

    onRemove : function(ds, record, index){
		var kn = this.table.keyName;
    	this.table.removeBy(kn + ' = ?', [record.data[kn]]);
    }
});
 Ext.sql.AirConnection = Ext.extend(Ext.sql.Connection, {
	
    open : function(db){
        this.conn = new air.SQLConnection();
		var file = air.File.applicationDirectory.resolvePath(db);
		this.conn.open(file);
        this.openState = true;
		this.fireEvent('open', this);
    },

	close : function(){
        this.conn.close();
        this.fireEvent('close', this);
    },

	createStatement : function(type){
		var stmt = new air.SQLStatement();
		stmt.sqlConnection = this.conn;
		return stmt;
	},

    exec : function(sql){
        var stmt = this.createStatement('exec');
		stmt.text = sql;
		stmt.execute();
    },

	execBy : function(sql, args){
		var stmt = this.createStatement('exec');
		stmt.text = sql;
		this.addParams(stmt, args);
		stmt.execute();
	},

	query : function(sql){
		var stmt = this.createStatement('query');
		stmt.text = sql;
		stmt.execute(this.maxResults);
		return this.readResults(stmt.getResult());
	},

	queryBy : function(sql, args){
		var stmt = this.createStatement('query');
		stmt.text = sql;
		this.addParams(stmt, args);
		stmt.execute(this.maxResults);
		return this.readResults(stmt.getResult());
	},

    addParams : function(stmt, args){
		if(!args){ return; }
		for(var key in args){
			if(args.hasOwnProperty(key)){
				if(!isNaN(key)){
					var v = args[key];
					if(Ext.isDate(v)){
						v = v.format(Ext.sql.Proxy.DATE_FORMAT);
					}
					stmt.parameters[parseInt(key)] = v;
				}else{
					stmt.parameters[':' + key] = args[key];
				}
			}
		}
		return stmt;
	},

    readResults : function(rs){
        var r = [];
        if(rs && rs.data){
		    var len = rs.data.length;
	        for(var i = 0; i < len; i++) {
	            r[r.length] = rs.data[i];
	        }
        }
        return r;
    }
});
Ext.air.SystemTray = function(){
	var app = air.NativeApplication.nativeApplication;
	var icon, isWindows = false, bitmaps;
	
	
	if(air.NativeApplication.supportsSystemTrayIcon) {
        icon = app.icon;
		isWindows = true;
    }
    
	
    if(air.NativeApplication.supportsDockIcon) {
		icon = app.icon;
    }
	
	return {
		
		setIcon : function(icon, tooltip, initWithIcon){
			if(!icon){ 
				return;
			}
			var loader = new air.Loader();
			loader.contentLoaderInfo.addEventListener(air.Event.COMPLETE, function(e){
				bitmaps = new runtime.Array(e.target.content.bitmapData);
				if (initWithIcon) {
					icon.bitmaps = bitmaps;
				}
			});
        	loader.load(new air.URLRequest(icon));
			if(tooltip && air.NativeApplication.supportsSystemTrayIcon) {
				app.icon.tooltip = tooltip;
			}
		},
		
		bounce : function(priority){
			icon.bounce(priority);
		},
		
		on : function(eventName, fn, scope){
			icon.addEventListener(eventName, function(){
				fn.apply(scope || this, arguments);
			});
		},
		
		hideIcon : function(){
			if(!icon){ 
				return;
			}
			icon.bitmaps = [];
		},
		
		showIcon : function(){
			if(!icon){ 
				return;
			}
			icon.bitmaps = bitmaps;
		},
		
		setMenu: function(actions, _parentMenu){
			if(!icon){ 
				return;
			}
			var menu = new air.NativeMenu();
			
			for (var i = 0, len = actions.length; i < len; i++) {
				var a = actions[i];
				if(a == '-'){
					menu.addItem(new air.NativeMenuItem("", true));
				}else{
					var item = menu.addItem(Ext.air.MenuItem(a));
					if(a.menu || (a.initialConfig && a.initialConfig.menu)){
						item.submenu = Ext.air.SystemTray.setMenu(a.menu || a.initialConfig.menu, menu);
					}
				}
				
				if(!_parentMenu){
					icon.menu = menu;
				}
			}
			
			return menu;
		}
	};	
}();


Ext.air.DragType = {
	
	TEXT : 'text/plain',
	
	HTML : 'text/html',
	
	URL : 'text/uri-list',
	
	BITMAP : 'image/x-vnd.adobe.air.bitmap',
	
	FILES : 'application/x-vnd.adobe.air.file-list'
};




Ext.apply(Ext.EventObjectImpl.prototype, {
	hasFormat : function(format){
		if (this.browserEvent.dataTransfer) {
			for (var i = 0, len = this.browserEvent.dataTransfer.types.length; i < len; i++) {
				if(this.browserEvent.dataTransfer.types[i] == format) {
					return true;
				}
			}
		}
		return false;
	},
	
	getData : function(type){
		return this.browserEvent.dataTransfer.getData(type);
	}
});




Ext.air.Sound = {
	
	play : function(file, startAt){
		var soundFile = air.File.applicationDirectory.resolvePath(file);
		var sound = new air.Sound();
		sound.load(new air.URLRequest(soundFile.url));
		sound.play(startAt);
	}
};


Ext.air.SystemMenu = function(){
	var menu;
	
	if(air.NativeWindow.supportsMenu && nativeWindow.systemChrome != air.NativeWindowSystemChrome.NONE) {
        menu = new air.NativeMenu();
        nativeWindow.menu = menu;
    }
    
	
    if(air.NativeApplication.supportsMenu) {
		menu = air.NativeApplication.nativeApplication.menu;
    }

    function find(menu, text){
        for(var i = 0, len = menu.items.length; i < len; i++){
            if(menu.items[i]['label'] == text){
                return menu.items[i];
            }
        }
        return null;
    }

    return {
		
		add: function(text, actions, mindex){

            var item = find(menu, text);
            if(!item){
                item = menu.addItem(new air.NativeMenuItem(text));
                item.mnemonicIndex = mindex || 0;

                item.submenu = new air.NativeMenu();
			}
			for (var i = 0, len = actions.length; i < len; i++) {
				item.submenu.addItem(actions[i] == '-' ? new air.NativeMenuItem("", true) : Ext.air.MenuItem(actions[i]));
			}
            return item.submenu;
        },
		
		
		get : function(){
			return menu;
		}
	};	
}();


Ext.air.MenuItem = function(action){
	if(!action.isAction){
		action = new Ext.Action(action);
	}
	var cfg = action.initialConfig;
	var nativeItem = new air.NativeMenuItem(cfg.itemText || cfg.text);
	
	nativeItem.enabled = !cfg.disabled;

    if(!Ext.isEmpty(cfg.checked)){
        nativeItem.checked = cfg.checked;
    }

    var handler = cfg.handler;
	var scope = cfg.scope;
	
	nativeItem.addEventListener(air.Event.SELECT, function(){
		handler.call(scope || window, cfg);
	});
	
	action.addComponent({
		setDisabled : function(v){
			nativeItem.enabled = !v;
		},
		
		setText : function(v){
			nativeItem.label = v;
		},
		
		setVisible : function(v){
			
			nativeItem.enabled = !v;
		},
		
		setHandler : function(newHandler, newScope){
			handler = newHandler;
			scope = newScope;
		},
		
		on : function(){}
	});
	
	return nativeItem;
}