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wp-content/plugins/file-manager-advanced/application/library/js/commands/undo.js

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+/**
+ * @class  elFinder command "undo"
+ * Undo previous commands
+ *
+ * @author Naoki Sawada
+ **/
+elFinder.prototype.commands.undo = function() {
+	"use strict";
+	var self = this,
+		fm = this.fm,
+		setTitle = function(undo) {
+			if (undo) {
+				self.title = fm.i18n('cmdundo') + ' ' + fm.i18n('cmd'+undo.cmd);
+				self.state = 0;
+			} else {
+				self.title = fm.i18n('cmdundo');
+				self.state = -1;
+			}
+			self.change();
+		},
+		cmds = [];
+	
+	this.alwaysEnabled  = true;
+	this.updateOnSelect = false;
+	this.shortcuts      = [{
+		pattern     : 'ctrl+z'
+	}];
+	this.syncTitleOnChange = true;
+	
+	this.getstate = function() {
+		return cmds.length? 0 : -1;
+	};
+	
+	this.setUndo = function(undo, redo) {
+		var _undo = {};
+		if (undo) {
+			if ($.isPlainObject(undo) && undo.cmd && undo.callback) {
+				Object.assign(_undo, undo);
+				if (redo) {
+					delete redo.undo;
+					_undo.redo = redo;
+				} else {
+					fm.getCommand('redo').setRedo(null);
+				}
+				cmds.push(_undo);
+				setTitle(_undo);
+			}
+		}
+	};
+	
+	this.exec = function() {
+		var redo = fm.getCommand('redo'),
+			dfd = $.Deferred(),
+			undo, res, _redo = {};
+		if (cmds.length) {
+			undo = cmds.pop();
+			if (undo.redo) {
+				Object.assign(_redo, undo.redo);
+				delete undo.redo;
+			} else {
+				_redo = null;
+			} 
+			dfd.done(function() {
+				if (_redo) {
+					redo.setRedo(_redo, undo);
+				}
+			});
+			
+			setTitle(cmds.length? cmds[cmds.length-1] : void(0));
+			
+			res = undo.callback();
+			
+			if (res && res.done) {
+				res.done(function() {
+					dfd.resolve();
+				}).fail(function() {
+					dfd.reject();
+				});
+			} else {
+				dfd.resolve();
+			}
+			if (cmds.length) {
+				this.update(0, cmds[cmds.length - 1].name);
+			} else {
+				this.update(-1, '');
+			}
+		} else {
+			dfd.reject();
+		}
+		return dfd;
+	};
+	
+	fm.bind('exec', function(e) {
+		var data = e.data || {};
+		if (data.opts && data.opts._userAction) {
+			if (data.dfrd && data.dfrd.done) {
+				data.dfrd.done(function(res) {
+					if (res && res.undo && res.redo) {
+						res.undo.redo = res.redo;
+						self.setUndo(res.undo);
+					}
+				});
+			}
+		}
+	});
+};
+
+/**
+ * @class  elFinder command "redo"
+ * Redo previous commands
+ *
+ * @author Naoki Sawada
+ **/
+elFinder.prototype.commands.redo = function() {
+	"use strict";
+	var self = this,
+		fm   = this.fm,
+		setTitle = function(redo) {
+			if (redo && redo.callback) {
+				self.title = fm.i18n('cmdredo') + ' ' + fm.i18n('cmd'+redo.cmd);
+				self.state = 0;
+			} else {
+				self.title = fm.i18n('cmdredo');
+				self.state = -1;
+			}
+			self.change();
+		},
+		cmds = [];
+	
+	this.alwaysEnabled  = true;
+	this.updateOnSelect = false;
+	this.shortcuts      = [{
+		pattern     : 'shift+ctrl+z ctrl+y'
+	}];
+	this.syncTitleOnChange = true;
+	
+	this.getstate = function() {
+		return cmds.length? 0 : -1;
+	};
+	
+	this.setRedo = function(redo, undo) {
+		if (redo === null) {
+			cmds = [];
+			setTitle();
+		} else {
+			if (redo && redo.cmd && redo.callback) {
+				if (undo) {
+					redo.undo = undo;
+				}
+				cmds.push(redo);
+				setTitle(redo);
+			}
+		}
+	};
+	
+	this.exec = function() {
+		var undo = fm.getCommand('undo'),
+			dfd = $.Deferred(),
+			redo, res, _undo = {}, _redo = {};
+		if (cmds.length) {
+			redo = cmds.pop();
+			if (redo.undo) {
+				Object.assign(_undo, redo.undo);
+				Object.assign(_redo, redo);
+				delete _redo.undo;
+				dfd.done(function() {
+					undo.setUndo(_undo, _redo);
+				});
+			}
+			
+			setTitle(cmds.length? cmds[cmds.length-1] : void(0));
+			
+			res = redo.callback();
+			
+			if (res && res.done) {
+				res.done(function() {
+					dfd.resolve();
+				}).fail(function() {
+					dfd.reject();
+				});
+			} else {
+				dfd.resolve();
+			}
+			return dfd;
+		} else {
+			return dfd.reject();
+		}
+	};
+};