/**
* Update the view data based on the current value.
*
* @param parent the parent element
* @param viewData the {@link ViewData} object to update
* @param isEditing true if in edit mode
* @return the new value
*/
private String updateViewData(Element parent, ViewData viewData, boolean isEditing) {
TextAreaElement input = (TextAreaElement) parent.getFirstChild();
String value = input.getValue();
viewData.setText(value);
viewData.setEditing(isEditing);
return value;
}
@Override
public void onBrowserEvent(
Context context,
Element parent,
String value,
NativeEvent event,
ValueUpdater<String> valueUpdater) {
Object key = context.getKey();
ViewData viewData = getViewData(key);
if (viewData != null && viewData.isEditing()) {
// Handle the edit event.
editEvent(context, parent, value, viewData, event, valueUpdater);
} else {
String type = event.getType();
int keyCode = event.getKeyCode();
boolean enterPressed = KEYUP.equals(type) && keyCode == KeyCodes.KEY_ENTER;
if (CLICK.equals(type) || enterPressed) {
// Go into edit mode.
if (viewData == null) {
viewData = new ViewData(value);
setViewData(key, viewData);
} else {
viewData.setEditing(true);
}
edit(context, parent, value);
}
}
}
private void editEvent(
Context context,
Element parent,
String value,
ViewData viewData,
NativeEvent event,
ValueUpdater<String> valueUpdater) {
String type = event.getType();
boolean keyUp = KEYUP.equals(type);
boolean keyDown = KEYDOWN.equals(type);
if (keyUp || keyDown) {
int keyCode = event.getKeyCode();
if (keyUp
&& keyCode == KeyCodes.KEY_ENTER
&& (event.getCtrlKey() || event.getAltKey() || event.getShiftKey())) {
// Commit the change.
commit(context, parent, viewData, valueUpdater);
} else if (keyUp && keyCode == KeyCodes.KEY_ESCAPE) {
// Cancel edit mode.
String originalText = viewData.getOriginal();
if (viewData.isEditingAgain()) {
viewData.setText(originalText);
viewData.setEditing(false);
} else {
setViewData(context.getKey(), null);
}
cancel(context, parent, value);
} else {
// Update the text in the view data on each key.
updateViewData(parent, viewData, true);
}
} else if (BLUR.equals(type)) {
// Commit the change. Ensure that we are blurring the input element and
// not the parent element itself.
EventTarget eventTarget = event.getEventTarget();
if (Element.is(eventTarget)) {
Element target = Element.as(eventTarget);
if ("input".equals(target.getTagName().toLowerCase())) {
commit(context, parent, viewData, valueUpdater);
}
}
}
}