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editline: support backspace and del

This commit is contained in:
Vadim Lopatin 2014-04-20 08:57:45 +04:00
parent 083241ce3f
commit 34e3f8ec06
1 changed files with 42 additions and 4 deletions
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40
src/dlangui/widgets/editors.d
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@ -150,7 +150,18 @@ class EditableContent {
} }
bool performOperation(EditOperation op) { bool performOperation(EditOperation op) {
if (op.action == EditAction.Insert) { if (op.action == EditAction.Delete) {
TextRange rangeBefore = op.range;
dchar[] buf;
dstring srcline = _lines[op.range.start.line];
buf ~= srcline[0 .. op.range.start.pos];
buf ~= srcline[op.range.end.pos .. $];
_lines[op.range.start.line] = cast(dstring)buf;
TextRange rangeAfter = rangeBefore;
rangeAfter.end = rangeAfter.start;
handleContentChange(op, rangeBefore, rangeAfter);
return true;
} else if (op.action == EditAction.Insert) {
// TODO: multiline // TODO: multiline
TextPosition pos = op.range.start; TextPosition pos = op.range.start;
TextRange rangeBefore = TextRange(pos, pos); TextRange rangeBefore = TextRange(pos, pos);
@ -185,6 +196,10 @@ enum EditorActions {
LineEnd, LineEnd,
DocumentBegin, DocumentBegin,
DocumentEnd, DocumentEnd,
DelPrevChar, // backspace
DelNextChar, // del key
DelPrevWord, // ctrl + backspace
DelNextWord, // ctrl + del key
} }
/// single line editor /// single line editor
@ -217,6 +232,10 @@ class EditLine : Widget, EditableContentListener {
new Action(EditorActions.LineEnd, KeyCode.END, 0), new Action(EditorActions.LineEnd, KeyCode.END, 0),
new Action(EditorActions.DocumentBegin, KeyCode.HOME, KeyFlag.Control), new Action(EditorActions.DocumentBegin, KeyCode.HOME, KeyFlag.Control),
new Action(EditorActions.DocumentEnd, KeyCode.END, KeyFlag.Control), new Action(EditorActions.DocumentEnd, KeyCode.END, KeyFlag.Control),
new Action(EditorActions.DelPrevChar, KeyCode.BACK, 0),
new Action(EditorActions.DelNextChar, KeyCode.DEL, 0),
new Action(EditorActions.DelPrevWord, KeyCode.BACK, KeyFlag.Control),
new Action(EditorActions.DelNextWord, KeyCode.DEL, KeyFlag.Control),
]); ]);
} }
@ -310,6 +329,22 @@ class EditLine : Widget, EditableContentListener {
invalidate(); invalidate();
} }
return true; return true;
case EditorActions.DelPrevChar:
if (_caretPos.pos > 0) {
TextRange range = TextRange(_caretPos, _caretPos);
range.start.pos--;
EditOperation op = new EditOperation(EditAction.Delete, range, null);
_content.performOperation(op);
}
return true;
case EditorActions.DelNextChar:
if (_caretPos.pos < _measuredText.length) {
TextRange range = TextRange(_caretPos, _caretPos);
range.end.pos++;
EditOperation op = new EditOperation(EditAction.Delete, range, null);
_content.performOperation(op);
}
return true;
case EditorActions.Up: case EditorActions.Up:
break; break;
case EditorActions.Down: case EditorActions.Down:
@ -352,10 +387,13 @@ class EditLine : Widget, EditableContentListener {
//} //}
} else if (event.action == KeyAction.Text && event.text.length) { } else if (event.action == KeyAction.Text && event.text.length) {
Log.d("text entered: ", event.text); Log.d("text entered: ", event.text);
dchar ch = event.text[0];
if (ch != 8) { // ignore Backspace
EditOperation op = new EditOperation(EditAction.Insert, _caretPos, event.text); EditOperation op = new EditOperation(EditAction.Insert, _caretPos, event.text);
_content.performOperation(op); _content.performOperation(op);
return true; return true;
} }
}
return super.onKeyEvent(event); return super.onKeyEvent(event);
} }