CocoRoboDesktop/kityminder-editor/ui/directive/undoRedo/undoRedo.html

<div class="km-btn-group do-group">
    <div class="km-btn-item undo"
         ng-disabled="editor.history.hasUndo() == false"
         ng-click="editor.history.hasUndo() == false || editor.history.undo();"
         title="{{ 'undo' | lang:'ui' }}">
        <i class="km-btn-icon"></i>
        <!--<span class="km-btn-caption">{{ 'undo' | lang:'ui' }}</span>-->
    </div>
    <div class="km-btn-item redo"
         ng-disabled="editor.history.hasRedo() == false"
         ng-click="editor.history.hasRedo() == false || editor.history.redo()"
         title="{{ 'redo' | lang:'ui' }}">
        <i class="km-btn-icon"></i>
        <!--<span class="km-btn-caption">{{ 'redo' | lang:'ui' }}</span>-->
    </div>
</div>