How to clear undo/redo history

[jagaxa]

I'm currently using the undo plugin. Is there any way to clear the undo history after I empty the editor using .val("")?

If not, how can I implement something like

	function clear() {
		undoStates = []
	}
	sceditor.plugins.undo.clear = clear;
}(sceditor));

[samclarke]

This should really be part of the undo plugin so I'll leave this issue open.

For now, adding a method to the editor in the undo plugin init should work. Something like:

editor.clearUndo = function () {
  undoStates = [];
  redoPosition = 0;
  storeState();
};

Full file: https://gist.github.com/samclarke/4a53460692a0d8ecc55eadca861dbd57

Can then be called with:

instance.clearUndo();

[huanacaraz]

I suggest also to add support to undo/redo commands (the translations already contains those keywords even if not used..)
I did it this way:

1. modify the toolbar icons image - add undo and redo image (to the end...)

2. modify the css - add icon definitions for the buttons:
   .sceditor-button-undo div{background-position:0 -659px} .sceditor-button-redo div{background-position:0 -675px}

3. add this line to main plugin function: (just after "var base = this;")
   var utils = sceditor.utils;

4. added this code to the plugin init method:
   ` var commands = this.commands;

    	commands.undo = utils.extend(commands.undo || {}, {
    		state: function () {
    			return redoPosition < undoStates.length - 1 ? 0 : -1;
    		},
    		exec: function () {
    			base.undo();
    		},
    		tooltip: 'Undo'
    	});
   
    	commands.redo = utils.extend(commands.redo || {}, {
    		state: function () {
    			return redoPosition > 0 ? 0 : -1;
    		},
    		exec: function () {
    			base.redo();
    		},
    		tooltip: 'Redo'
    	});
    	
    	editor.resetUndo = function() {
    		undoStates = [];
    		redoPosition = 0;
    		storeState();
    	}
   

`