exec-command.js revision 58b0694c5cd8077e8c1f73624a56c8880927375f
/**
* Plugin for the frame module to handle execCommands for Editor
* @module editor
* @submodule exec-command
*/
/**
* Plugin for the frame module to handle execCommands for Editor
* @class Plugin.ExecCommand
* @extends Base
* @constructor
*/
var ExecCommand = function() {
ExecCommand.superclass.constructor.apply(this, arguments);
};
Y.extend(ExecCommand, Y.Base, {
/**
* An internal reference to the instance of the frame plugged into.
* @private
* @property _inst
*/
_inst: null,
/**
* Execute a command on the frame's document.
* @method command
* @param {String} action The action to perform (bold, italic, fontname)
* @param {String} value The optional value (helvetica)
* @return {Node/NodeList} Should return the Node/Nodelist affected
*/
command: function(action, value) {
var fn = ExecCommand.COMMANDS[action];
Y.log('execCommand(' + action + '): "' + value + '"', 'info', 'exec-command');
if (fn) {
return fn.call(this, action, value);
} else {
return this._command(action, value);
}
},
/**
* The private version of execCommand that doesn't filter for overrides.
* @private
* @method _command
* @param {String} action The action to perform (bold, italic, fontname)
* @param {String} value The optional value (helvetica)
*/
_command: function(action, value) {
var inst = this.getInstance();
try {
Y.log('Internal execCommand(' + action + '): "' + value + '"', 'info', 'exec-command');
inst.config.doc.execCommand(action, false, value);
} catch (e) {
Y.log(e.message, 'error', 'exec-command');
}
},
/**
* Get's the instance of YUI bound to the parent frame
* @method getInstance
* @return {YUI} The YUI instance bound to the parent frame
*/
getInstance: function() {
if (!this._inst) {
this._inst = this.get('host').getInstance();
}
return this._inst;
},
initializer: function() {
Y.mix(this.get('host'), {
execCommand: function(action, value) {
return this.exec.command(action, value);
},
_execCommand: function(action, value) {
return this.exec._command(action, value);
}
});
}
}, {
/**
* execCommand
* @property NAME
* @static
*/
NAME: 'execCommand',
/**
* exec
* @property NS
* @static
*/
NS: 'exec',
ATTRS: {
host: {
value: false
}
},
/**
* Static object literal of execCommand overrides
* @property COMMANDS
* @static
*/
COMMANDS: {
/**
* Wraps the content with a new element of type (tag)
* @method COMMANDS.wrap
* @static
* @param {String} cmd The command executed: wrap
* @param {String} tag The tag to wrap the selection with
* @return {NodeList} NodeList of the items touched by this command.
*/
wrap: function(cmd, tag) {
var inst = this.getInstance();
return (new inst.Selection()).wrapContent(tag);
},
/**
* Inserts the provided HTML at the cursor, should be a single element.
* @method COMMANDS.inserthtml
* @static
* @param {String} cmd The command executed: inserthtml
* @param {String} html The html to insert
* @return {Node} Node instance of the item touched by this command.
*/
inserthtml: function(cmd, html) {
var inst = this.getInstance();
return (new inst.Selection()).insertContent(html);
},
/**
* Inserts the provided HTML at the cursor, and focuses the cursor afterwards.
* @method COMMANDS.insertandfocus
* @static
* @param {String} cmd The command executed: insertandfocus
* @param {String} html The html to insert
* @return {Node} Node instance of the item touched by this command.
*/
insertandfocus: function(cmd, html) {
var inst = this.getInstance(), out, sel;
html += inst.Selection.CURSOR;
out = this.command('inserthtml', html);
sel = new inst.Selection();
sel.focusCursor(true, true);
return out;
},
/**
* Inserts a BR at the current cursor position
* @method COMMANDS.insertbr
* @static
* @param {String} cmd The command executed: insertbr
*/
insertbr: function(cmd) {
var inst = this.getInstance(), cur,
sel = new inst.Selection();
sel.setCursor();
cur = sel.getCursor();
cur.insert('<br>', 'before');
sel.focusCursor(true, false);
return cur.previous();
},
/**
* Inserts an image at the cursor position
* @method COMMANDS.insertimage
* @static
* @param {String} cmd The command executed: insertimage
* @param {String} img The url of the image to be inserted
* @return {Node} Node instance of the item touched by this command.
*/
insertimage: function(cmd, img) {
return this.command('inserthtml', '<img src="' + img + '">');
},
/**
* Add a class to all of the elements in the selection
* @method COMMANDS.addclass
* @static
* @param {String} cmd The command executed: addclass
* @param {String} cls The className to add
* @return {NodeList} NodeList of the items touched by this command.
*/
addclass: function(cmd, cls) {
var inst = this.getInstance();
return (new inst.Selection()).getSelected().addClass(cls);
},
/**
* Remove a class from all of the elements in the selection
* @method COMMANDS.removeclass
* @static
* @param {String} cmd The command executed: removeclass
* @param {String} cls The className to remove
* @return {NodeList} NodeList of the items touched by this command.
*/
removeclass: function(cmd, cls) {
var inst = this.getInstance();
return (new inst.Selection()).getSelected().removeClass(cls);
},
/**
* Adds a background color to the current selection, or creates a new element and applies it
* @method COMMANDS.backcolor
* @static
* @param {String} cmd The command executed: backcolor
* @param {String} val The color value to apply
* @return {NodeList} NodeList of the items touched by this command.
*/
forecolor: function(cmd, val) {
var inst = this.getInstance(),
sel = new inst.Selection(), n;
if (!Y.UA.ie) {
this._command('styleWithCSS', 'true');
}
if (sel.isCollapsed) {
if (sel.anchorNode && (sel.anchorNode.get('innerHTML') === '&nbsp;')) {
sel.anchorNode.setStyle('color', val);
n = sel.anchorNode;
} else {
n = this.command('inserthtml', '<span style="color: ' + val + '">' + inst.Selection.CURSOR + '</span>');
sel.focusCursor(true, true);
}
return n;
} else {
return this._command(cmd, val);
}
if (!Y.UA.ie) {
this._command('styleWithCSS', false);
}
},
backcolor: function(cmd, val) {
var inst = this.getInstance(),
sel = new inst.Selection(), n;
if (Y.UA.gecko || Y.UA.opera) {
cmd = 'hilitecolor';
}
if (!Y.UA.ie) {
this._command('styleWithCSS', 'true');
}
if (sel.isCollapsed) {
if (sel.anchorNode && (sel.anchorNode.get('innerHTML') === '&nbsp;')) {
sel.anchorNode.setStyle('backgroundColor', val);
n = sel.anchorNode;
} else {
n = this.command('inserthtml', '<span style="background-color: ' + val + '">' + inst.Selection.CURSOR + '</span>');
sel.focusCursor(true, true);
}
return n;
} else {
return this._command(cmd, val);
}
if (!Y.UA.ie) {
this._command('styleWithCSS', false);
}
},
/**
* Sugar method, calles backcolor
* @method COMMANDS.hilitecolor
* @static
* @param {String} cmd The command executed: backcolor
* @param {String} val The color value to apply
* @return {NodeList} NodeList of the items touched by this command.
*/
hilitecolor: function() {
return ExecCommand.COMMANDS.backcolor.apply(this, arguments);
},
/**
* Adds a font name to the current selection, or creates a new element and applies it
* @method COMMANDS.fontname
* @static
* @param {String} cmd The command executed: fontname
* @param {String} val The font name to apply
* @return {NodeList} NodeList of the items touched by this command.
*/
fontname: function(cmd, val) {
var inst = this.getInstance(),
sel = new inst.Selection(), n;
if (sel.isCollapsed) {
if (sel.anchorNode && (sel.anchorNode.get('innerHTML') === '&nbsp;')) {
sel.anchorNode.setStyle('fontFamily', val);
n = sel.anchorNode;
} else {
n = this.command('inserthtml', '<span style="font-family: ' + val + '">' + inst.Selection.CURSOR + '</span>');
sel.focusCursor(true, true);
}
return n;
} else {
return this._command('fontname', val);
}
},
/**
* Adds a fontsize to the current selection, or creates a new element and applies it
* @method COMMANDS.fontsize
* @static
* @param {String} cmd The command executed: fontsize
* @param {String} val The font size to apply
* @return {NodeList} NodeList of the items touched by this command.
*/
fontsize: function(cmd, val) {
var inst = this.getInstance(),
sel = new inst.Selection(), n, prev;
if (sel.isCollapsed) {
n = this.command('inserthtml', '<font size="' + val + '">&nbsp;</font>');
prev = n.get('previousSibling');
if (prev && prev.get('nodeType') === 3) {
if (prev.get('length') < 2) {
prev.remove();
}
}
sel.selectNode(n.get('firstChild'), true, false);
return n;
} else {
return this._command('fontsize', val);
}
}
}
});
Y.namespace('Plugin');
Y.Plugin.ExecCommand = ExecCommand;