From: Aleksander Ɓukasz Date: Wed, 7 Aug 2013 12:25:27 +0000 (+0200) Subject: Handling del/ctrl-x (wip) X-Git-Url: https://git.mdrn.pl/fnpeditor.git/commitdiff_plain/0e2f63417bf8442152e237949ba78abcc52b5157?ds=inline Handling del/ctrl-x (wip) - handling delete key on empty text element, - blocking ctrl-x on whole element text (todo: handle like del/backspace) - handling deletion of whole element text via del/backspace --- diff --git a/modules/documentCanvas/canvas/canvas.js b/modules/documentCanvas/canvas/canvas.js index e706428..25fe689 100644 --- a/modules/documentCanvas/canvas/canvas.js +++ b/modules/documentCanvas/canvas/canvas.js @@ -174,7 +174,9 @@ $.extend(Canvas.prototype, { ARROW_UP: 38, ARROW_RIGHT: 39, ARROW_DOWN: 40, - BACKSPACE: 8 + BACKSPACE: 8, + DELETE: 46, + X: 88 } this.wrapper.on('keyup', function(e) { @@ -198,7 +200,8 @@ $.extend(Canvas.prototype, { }); this.wrapper.on('keydown', function(e) { - var position = canvas.getCursor().getPosition(), + var cursor = canvas.getCursor(), + position = canvas.getCursor().getPosition(), element = position.element; if(e.which >= 37 && e.which <= 40) { @@ -229,12 +232,42 @@ $.extend(Canvas.prototype, { } - if(e.which === KEYS.BACKSPACE) { - if(element.getText().length === 1) { + + var selectsWholeTextElement = function() { + if(cursor.isSelecting() && cursor.getSelectionStart().offsetAtBeginning && cursor.getSelectionEnd().offsetAtEnd) + return true; + return false; + } + + if(e.which === KEYS.X && e.ctrlKey && selectsWholeTextElement()) { + e.preventDefault(); + } + + if(e.which === KEYS.BACKSPACE || e.which === KEYS.DELETE) { + if(cursor.isSelecting() && !cursor.isSelectingWithinElement()) { + e.preventDefault(); + return; + } + + var cursorAtOperationEdge = position.offsetAtBeginning; + if(e.which === KEYS.DELETE) { + cursorAtOperationEdge = position.offsetAtEnd; + } + + if(element.getText().length === 1 || selectsWholeTextElement()) { e.preventDefault(); element.setText(''); } else if(element.isEmpty()) { + + var direction = 'above', + caretTo = 'end'; + + if(e.which === KEYS.DELETE) { + direction = 'below'; + caretTo = 'start'; + } + e.preventDefault(); var parent = element.parent(), @@ -244,17 +277,18 @@ $.extend(Canvas.prototype, { if(grandParent && grandParent.children().length === 1) { goto = grandParent.append({text: ''}); } else { - goto = canvas.getDocumentElement(utils.nearestInDocumentOrder('[document-text-element]', 'above', element.dom()[0])); + goto = canvas.getDocumentElement(utils.nearestInDocumentOrder('[document-text-element]', direction, element.dom()[0])); } parent.detach(); } else { - goto = canvas.getDocumentElement(utils.nearestInDocumentOrder('[document-text-element]', 'above', element.dom()[0])); + goto = canvas.getDocumentElement(utils.nearestInDocumentOrder('[document-text-element]', direction, element.dom()[0])); element.detach(); } - canvas.setCurrentElement(goto, {caretTo: 'end'}); + canvas.setCurrentElement(goto, {caretTo: caretTo}); } - else if(position.offset === 0) { + else if(cursorAtOperationEdge) { // todo + e.preventDefault(); } } });