Lively Kernel canvas
//
DraftingMultipleUndo....40
//newTestRunner().openIn(WorldMorph.current(),pt(500,100))TestCase.subclass("TextReplacementCommandTest",{setUp:function(){this.text=newTextMorph(newRectangle(100,100,10,10));this.text.renderAfterReplacement=function(){};},testUndoAndRedo:function(){this.text.setTextString("Hello");varcmd=newReplaceTextCommand(this.text,0,"","H");cmd.undo();this.assertEqual(this.text.textString,"ello","undofirstbroken")cmd.redo();this.assertEqual(this.text.textString,"Hello","redofirstbroken")cmd=newReplaceTextCommand(this.text,1,"abcde","ell");cmd.undo();this.assertEqual(this.text.textString,"Habcdeo","undomiddlebroken")cmd.redo();this.assertEqual(this.text.textString,"Hello","redomiddlebroken")cmd=newReplaceTextCommand(this.text,5,"Last","");cmd.undo();this.assertEqual(this.text.textString,"HelloLast","undolastbroken")cmd.redo();this.assertEqual(this.text.textString,"Hello","redolastbroken")},testUndoRichText:function(){this.text.setTextString("Hello");varoldText=newlively.Text.Text("World",{color:Color.green});varcmd=newReplaceTextCommand(this.text,6,oldText,"");cmd.undo();this.assertEqual(this.text.textString,"HelloWorld","undotextStringbroken");this.assertEqual(this.text.textStyle.valueAt(7).color,Color.green,"undotextStringbroken")},testSlicdeRichText:function(){this.text.setTextString("HelloWorldhowareyou?");this.text.setSelectionRange(6,12);this.text.emphasizeSelection({color:Color.green});varstyleSlice=this.text.textStyle.slice(4,14);this.assertEqual(styleSlice.valueAt(0).color,undefined,"0");this.assertEqual(styleSlice.valueAt(3).color,Color.green,"1");this.assert(styleSlice.runs,"norunsinslice");this.assertEqual(styleSlice.runs.length,3,"wrongnumberofruns");varstringSlice=this.text.textString.slice(4,14);vartextObj=newlively.Text.Text(stringSlice,styleSlice);this.text.setSelectionRange(1,2);this.text.replaceSelectionWith(textObj);console.log("text:"+textObj);},});TestCase.subclass("UndoHistoryTest",{setUp:function(){this.sut=newUndoHistory();},testAddCommand:function(){varcmd=newUndoableCommand();this.sut.addCommand(cmd);this.assertEqual(this.sut.undoStack.length,1)},testUndo:function(){varundoWasRun=false;varcmd=newUndoableCommand();cmd.undo=function(){undoWasRun=true};this.sut.addCommand(cmd);this.sut.undo();this.assertEqual(this.sut.undoStack.length,0);this.assert(undoWasRun,"undowasnotperformed");this.assertEqual(this.sut.redoStack.length,1)},testForgetRedoHistoryAfterNewCommand:function(){this.sut.addCommand(newUndoableCommand());this.sut.undo();this.assertEqual(this.sut.redoStack.length,1);this.sut.addCommand(newUndoableCommand());this.assertEqual(this.sut.undoStack.length,1);this.assertEqual(this.sut.redoStack.length,0);},testRedo:function(){varredoWasRun=false;varcmd=newUndoableCommand();cmd.redo=function(){redoWasRun=true};this.sut.addCommand(cmd);this.sut.undo();this.sut.redo();this.assertEqual(this.sut.undoStack.length,1);this.assert(redoWasRun,"undowasnotperformed");this.assertEqual(this.sut.redoStack.length,0);},testHasUndoableCommand:function(){this.assertEqual(this.sut.hasUndoableCommand(),false);varcmd=newUndoableCommand();this.sut.addCommand(cmd);this.assertEqual(this.sut.hasUndoableCommand(),true);this.sut.undo();this.sut.undo();//emtpy},});TestCase.subclass("TextWithUndoStackTest",{setUp:function(){this.text=newTextMorph(newRectangle(100,100,10,10));this.text.setWithLayers([UndoLayer]);//textcompositionseemstodependonatextisisactuallydisplayedinaworld//sowedisablethenonworkingpart...this.text.renderAfterReplacement=function(){};//WorldMorph.current().addMorph(this.text);},testSetTextStringProducesCommand:function(){this.text.undoHistory=newUndoHistory();this.text.setTextString("ANewText");this.assert(this.text.undoHistory.hasUndoableCommand(),"noundoablecmd")},testUndoDoesNotProduceAnUndo:function(){this.text.setTextString("OldText");this.text.undoHistory=newUndoHistory();this.text.setTextString("NewText");varaddCommandExecuted=false;this.text.addCommand=function(){addCommandExecuted=true}this.text.undoHistory.undo();this.assert(!addCommandExecuted,"addCommandwasexecutedinundo");this.assertEqual(this.text.undoHistory.undoStack.length,0);this.assertEqual(this.text.textString,"OldText","undodidnotwork")},testMultipleUndoAndRedo:function(){this.text.setTextString("OldText");this.text.undoHistory=newUndoHistory();this.text.setTextString("NewText1");this.text.setTextString("NewText2");this.text.setTextString("NewText3");this.assertEqual(this.text.textString,"NewText3","undodidnotwork");this.text.undoHistory.undo();this.assertEqual(this.text.textString,"NewText2","undodidnotwork");this.text.undoHistory.undo();this.assertEqual(this.text.textString,"NewText1","undodidnotwork");this.text.undoHistory.undo();this.assertEqual(this.text.textString,"OldText","undodidnotwork");this.text.undoHistory.undo();this.assertEqual(this.text.textString,"OldText","undoafteremtydidnotwork");this.text.undoHistory.redo();this.assertEqual(this.text.textString,"NewText1","redodidnotwork");},testReplaceSelectionTriggersUndo:function(){this.text.setTextString("OldText");this.text.undoHistory=newUndoHistory();this.text.setSelectionRange(0,3);this.text.replaceSelectionWith("New");this.assertEqual(this.text.textString,"NewText","replacedidnotwork");this.text.undoHistory.undo();this.assertEqual(this.text.textString,"OldText","undodidnotwork");},testUndoPreservesStyle:function(){this.text.setTextString("OldText");this.text.setSelectionRange(0,3);this.text.emphasizeSelection({color:Color.green});this.assertEqual(this.text.textStyle.valueAt(1).color,Color.green,"stylingbroken");this.text.undoHistory=newUndoHistory();this.text.setSelectionRange(0,3);this.text.replaceSelectionWith("");this.text.undoHistory.undo();this.assertEqual(this.text.textStyle.valueAt(1).color,Color.green,"undoforgetsstyle");},tearDown:function(){//this.text.remove();}});6truetruefalsetruetruetruefalse