ComunicWeb/assets/3rdparty/sceditor/plugins/undo.js

/* SCEditor v2.1.3 | (C) 2017, Sam Clarke | sceditor.com/license */

!function(e){"use strict";sceditor.plugins.undo=function(){var r,o,e=this,u=0,a=50,n=[],c=[],s=!1,l=function(e){s=!0,o=e.value,r.sourceMode(e.sourceMode),r.val(e.value,!1),r.focus(),e.sourceMode?r.sourceEditorCaret(e.caret):r.getRangeHelper().restoreRange(),s=!1};e.init=function(){a=(r=this).undoLimit||a,r.addShortcut("ctrl+z",e.undo),r.addShortcut("ctrl+shift+z",e.redo),r.addShortcut("ctrl+y",e.redo)},e.undo=function(){var e=c.pop(),t=r.val(null,!1);return e&&!n.length&&t===e.value&&(e=c.pop()),e&&(n.length||n.push({caret:r.sourceEditorCaret(),sourceMode:r.sourceMode(),value:t}),n.push(e),l(e)),!1},e.redo=function(){var e=n.pop();return c.length||(c.push(e),e=n.pop()),e&&(c.push(e),l(e)),!1},e.signalReady=function(){var e=r.val(null,!1);o=e,c.push({caret:this.sourceEditorCaret(),sourceMode:this.sourceMode(),value:e})},e.signalValuechangedEvent=function(e){var t=e.detail.rawValue;0<a&&c.length>a&&c.shift(),!s&&o&&o!==t&&(n.length=0,(u+=function(e,t){var r,o,u,a,n=e.length,c=t.length,s=Math.max(n,c);for(r=0;r<s&&e.charAt(r)===t.charAt(r);r++);for(u=n<c?c-n:0,a=c<n?n-c:0,o=s-1;0<=o&&e.charAt(o-u)===t.charAt(o-a);o--);return o-r+1}(o,t))<20||u<50&&!/\s$/g.test(e.rawValue)||(c.push({caret:r.sourceEditorCaret(),sourceMode:r.sourceMode(),value:t}),u=0,o=t))}}}();