73 lines
2 KiB
JavaScript
73 lines
2 KiB
JavaScript
'use strict';
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Ox.History = function(options) {
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options = Ox.extend({
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text: function(item) {
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return item.text;
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}
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}, options || {});
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var history = [],
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position = 0,
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$element;
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return {
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_print: function() {
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Ox.print(JSON.stringify({history: history, position: position}));
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},
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add: function(items) {
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items = Ox.makeArray(items);
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history = history.slice(0, position).concat(items);
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position += items.length;
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$element && $element.triggerEvent('add');
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return history.length;
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},
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bindEvent: function() {
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if (!$element) {
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$element = Ox.Element();
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}
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$element.bindEvent.apply($element, arguments);
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},
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clear: function() {
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history = [];
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position = 0;
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$element && $element.triggerEvent('clear');
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return history.length;
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},
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items: function() {
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return history.length;
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},
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redo: function() {
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if (position < history.length) {
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position++;
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$element && $element.triggerEvent('redo');
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return history[position - 1];
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}
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},
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redoText: function() {
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if (position < history.length) {
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return options.text(history[position]);
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}
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},
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remove: function(test) {
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},
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unbindEvent: function() {
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$element && $element.unbindEvent.apply($element, arguments);
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},
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undo: function() {
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if (position > 0) {
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position--;
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$element && $element.triggerEvent('undo');
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return history[position];
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}
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},
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undoText: function() {
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if (position > 0) {
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return options.text(history[position - 1]);
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}
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}
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};
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};
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