Java Code Examples for com.google.gwt.event.dom.client.KeyCodes#KEY_ESCAPE

private void handlePanelEventDelegation(final KeyUpEvent event) {
    switch (event.getNativeKeyCode()) {
    case KeyCodes.KEY_DOWN:
        arrowKeyDown(event);
        break;
    case KeyCodes.KEY_UP:
        arrorKeyUp(event);
        break;
    case KeyCodes.KEY_ESCAPE:
        escapeKey();
        break;
    case KeyCodes.KEY_ENTER:
        enterKey();
        break;
    default:
        doAskForSuggestion();
    }
}
 

private KeyUpHandler setEscapeHandler() {
	KeyUpHandler handler = new KeyUpHandler() {
		@Override
		public void onKeyUp(final KeyUpEvent event) {
			if (KeyCodes.KEY_ESCAPE == event.getNativeEvent().getKeyCode()) {
				for (Control control : controls) {
					try {
						((DrawFeature) control).cancel();
					} catch (Exception e) {
						LOGGER.error("ACTION CANCELED: "
								+ control.getControlId());
					}
				}
			}
		}
	};
	return handler;
}
 

@Override
public void onBrowserEvent(Event event) {
	super.onBrowserEvent(event);
	boolean mustKillEvent = false;
	if (DOM.eventGetType(event) == Event.ONKEYDOWN) {
		switch (event.getKeyCode()) {
			case KeyCodes.KEY_TAB:
			case KeyCodes.KEY_ESCAPE:
				this.getDropdown().close();
				break;
			default:
				break;
		}
	}
	if (mustKillEvent) {
		event.preventDefault();
		event.stopPropagation();
	}
}
 

@Override
protected void onPreviewNativeEvent(Event.NativePreviewEvent event) {
    if (Event.ONKEYDOWN == event.getTypeInt()) {
        if (event.getNativeEvent().getKeyCode() == KeyCodes.KEY_ESCAPE) {
            // Dismiss when escape is pressed
            hide();
        }
    }
}
 

@Override
protected void onPreviewNativeEvent(Event.NativePreviewEvent event) {
    if (Event.ONKEYDOWN == event.getTypeInt()) {
        if (event.getNativeEvent().getKeyCode() == KeyCodes.KEY_ESCAPE) {
            // Dismiss when escape is pressed
            hide();
        }
    }
}
 

/**
 * Triggered when a key was depressed.
 *
 * @param event
 *            The KeyUpEvent of the key depressed
 */
@Override
public void onKeyUp(KeyUpEvent event) {
	debug("VComboBoxMultiselect: onKeyUp(" + event.getNativeKeyCode() + ")");

	if (this.enabled && !this.readonly) {
		switch (event.getNativeKeyCode()) {
		case KeyCodes.KEY_ENTER:
		case KeyCodes.KEY_TAB:
		case KeyCodes.KEY_SHIFT:
		case KeyCodes.KEY_CTRL:
		case KeyCodes.KEY_ALT:
		case KeyCodes.KEY_DOWN:
		case KeyCodes.KEY_UP:
		case KeyCodes.KEY_PAGEDOWN:
		case KeyCodes.KEY_PAGEUP:
		case KeyCodes.KEY_ESCAPE:
			// NOP
			break;
		default:
			if (this.textInputEnabled) {
				// when filtering, we always want to see the results on the
				// first page first.
				filterOptions(0);
			}
			break;
		}
	}
}
 

private PopupPanel createDisplay(Message message) {
    PopupPanel displayPopup = new PopupPanel() {
        {
            this.sinkEvents(Event.ONKEYDOWN);

            getElement().setAttribute("role", "alert");
            getElement().setAttribute("aria-live", "assertive");

            if(!message.isSticky()) {
                setAutoHideEnabled(true);
                setAutoHideOnHistoryEventsEnabled(true);
            }
        }

        @Override
        protected void onPreviewNativeEvent(Event.NativePreviewEvent event) {
            if (Event.ONKEYDOWN == event.getTypeInt()) {
                if (event.getNativeEvent().getKeyCode() == KeyCodes.KEY_ESCAPE) {
                    // Dismiss when escape is pressed
                    hide();
                }
            }
        }
    };

    displayPopup.addStyleName("back");
    return displayPopup;
}
 

@Override
public void onKeyDown(KeyDownEvent event) {
	int keyCode = event.getNativeKeyCode();
	if (keyCode == KeyCodes.KEY_ENTER
			&& choiceList.getSelectedIndex() != -1) {
		event.preventDefault();
		event.stopPropagation();
		select();
	} else if (keyCode == KeyCodes.KEY_ESCAPE) {
		event.preventDefault();
		close();
	}
}
 

@Override
public void onKeyUp(KeyUpEvent event) {
    if (enabled && !readonly) {
        switch (event.getNativeKeyCode()) {
            case KeyCodes.KEY_ENTER:
                String tbText = tb.getText() == null ? ""
                        : tb.getText();
                String currentText = currentSuggestion == null ? ""
                        : currentSuggestion.getReplacementString();
                if (!this.preventFilterAfterSelect && !tbText.equals(currentText)) {
                    filterOptions(currentPage);
                } else {
                    if (!event.isAnyModifierKeyDown()) {
                        event.stopPropagation();
                    }
                }
                this.preventFilterAfterSelect = false;
                break;
            case KeyCodes.KEY_TAB:
            case KeyCodes.KEY_SHIFT:
            case KeyCodes.KEY_CTRL:
            case KeyCodes.KEY_ALT:
            case KeyCodes.KEY_DOWN:
            case KeyCodes.KEY_UP:
            case KeyCodes.KEY_PAGEDOWN:
            case KeyCodes.KEY_PAGEUP:
                // NOP
                break;
            case KeyCodes.KEY_ESCAPE:
                reset();
                break;
        }
        updateEditState();
    }
}
 

/**
 * Triggered when a key was depressed.
 *
 * @param event
 *            The KeyUpEvent of the key depressed
 */
@Override
public void onKeyUp(KeyUpEvent event) {
	debug("VComboBoxMultiselect: onKeyUp(" + event.getNativeKeyCode() + ")");

	if (this.enabled && !this.readonly) {
		switch (event.getNativeKeyCode()) {
		case KeyCodes.KEY_ENTER:
		case KeyCodes.KEY_TAB:
		case KeyCodes.KEY_SHIFT:
		case KeyCodes.KEY_CTRL:
		case KeyCodes.KEY_ALT:
		case KeyCodes.KEY_DOWN:
		case KeyCodes.KEY_UP:
		case KeyCodes.KEY_PAGEDOWN:
		case KeyCodes.KEY_PAGEUP:
		case KeyCodes.KEY_ESCAPE:
			// NOP
			break;
		default:
			if (this.textInputEnabled) {
				// when filtering, we always want to see the results on the
				// first page first.
				filterOptions(0);
			}
			break;
		}
	}
}
 

@Override
protected void onPreviewNativeEvent(Event.NativePreviewEvent event) {
    if (Event.ONKEYDOWN == event.getTypeInt()) {
        if (event.getNativeEvent().getKeyCode() == KeyCodes.KEY_ESCAPE) {
            // Dismiss when escape is pressed
            hide();
        }
    }
}
 

private void handleKeyUp(int keyCode) {
  if (keyCode == KeyCodes.KEY_ESCAPE) {
    // Pressing <esc> will reset the content of the editor to the previous property value as well
    // as surrender focus.
    updateValue();  // Restore previous property value.
    urlField.cancelKey();
    urlField.setFocus(false);
  }
}
 

@Override
public void onKeyDown(KeyDownEvent event) {
  if (event.getNativeKeyCode() == KeyCodes.KEY_ESCAPE) {
    searchResults.clear();
    searchText.setText("");
  }
}
 

private void handleKeyUp(int keyCode) {
  if (keyCode == KeyCodes.KEY_ESCAPE) {
    // Pressing <esc> will reset the content of the editor to the previous property value as well
    // as surrender focus.
    updateValue();  // Restore previous property value.
    textEdit.cancelKey();
    textEdit.setFocus(false);
  }
}
 

@Override
protected void onPreviewNativeEvent(NativePreviewEvent event) {
	super.onPreviewNativeEvent(event);
	if (isEscapeToHide() && event.getNativeEvent().getKeyCode() == KeyCodes.KEY_ESCAPE) {
		AriaStatus.getInstance().setText(ARIA.dialogClosed(getText()));
		hide();
	} if (isEnterToSubmit() && event.getNativeEvent().getKeyCode() == KeyCodes.KEY_ENTER) {
		event.getNativeEvent().stopPropagation();
		event.getNativeEvent().preventDefault();
    	iSubmitHandler.execute();
	}
}
 

@Override
public void onBrowserEvent(Event event) {
    if (getElement() == DOM.eventGetTarget(event)) {
        return;
    }

    SuggestionItem item = findItem(DOM.eventGetTarget(event));
    switch (DOM.eventGetType(event)) {
        case Event.ONMOUSEDOWN: {
            if (BrowserInfo.get().isIE()) {
                suggestionFieldWidget.iePreventBlur = true;
            }
            break;
        }

        case Event.ONCLICK: {
            if (event.getButton() == NativeEvent.BUTTON_LEFT) {
                performItemCommand(item);
            }
            break;
        }

        case Event.ONMOUSEOVER: {
            if (item != null) {
                selectItem(item);
            }
            break;
        }

        case Event.ONKEYDOWN: {
            int keyCode = KeyCodes.maybeSwapArrowKeysForRtl(
                    event.getKeyCode(),
                    LocaleInfo.getCurrentLocale().isRTL()
            );

            switch (keyCode) {
                case KeyCodes.KEY_UP:
                    selectPrevItem();
                    preventEvent(event);
                    break;
                case KeyCodes.KEY_DOWN:
                    selectNextItem();
                    preventEvent(event);
                    break;
                case KeyCodes.KEY_ESCAPE:
                    selectItem(null);
                    preventEvent(event);
                    break;
                case KeyCodes.KEY_TAB:
                    selectItem(null);
                    break;
                case KeyCodes.KEY_ENTER:
                    performItemCommand(item);
                    preventEvent(event);
                    break;
            }
            break;
        }
    }
    super.onBrowserEvent(event);
}
 

private boolean handleKeyPress(int keyCode) {
	if (KeyEventUtils.isModifierKeyDown(Event.getCurrentEvent())) {
		return false;
	}
	boolean handleKey = false;
	switch (keyCode) {
		case KeyCodes.KEY_LEFT:
			CalendarUtil.addDaysToDate(this.cursor, -1);
			handleKey = true;
			break;
		case KeyCodes.KEY_RIGHT:
			CalendarUtil.addDaysToDate(this.cursor, 1);
			handleKey = true;
			break;
		case KeyCodes.KEY_UP:
			CalendarUtil.addDaysToDate(this.cursor, -7);
			handleKey = true;
			break;
		case KeyCodes.KEY_DOWN:
			CalendarUtil.addDaysToDate(this.cursor, 7);
			handleKey = true;
			break;
		case KeyCodes.KEY_PAGEUP:
			CalendarUtil.addMonthsToDate(this.cursor, -1);
			handleKey = true;
			break;
		case KeyCodes.KEY_PAGEDOWN:
			CalendarUtil.addMonthsToDate(this.cursor, 1);
			handleKey = true;
			break;
		case KeyCodes.KEY_ENTER:
			this.setValue(this.cursor, true);
			handleKey = true;
			break;
		case KeyCodes.KEY_ESCAPE:
			this.setValue(this.value);
			this.setFocus(false);
			handleKey = true;
			break;
		default:
			break;
	}
	if (handleKey) {
		this.redraw();
	}

	return handleKey;
}
 

/**
 * Triggered when a key was pressed in the suggestion popup.
 *
 * @param event
 *            The KeyDownEvent of the key
 */
private void popupKeyDown(KeyDownEvent event) {
	debug("VComboBoxMultiselect: popupKeyDown(" + event.getNativeKeyCode() + ")");

	// Propagation of handled events is stopped so other handlers such as
	// shortcut key handlers do not also handle the same events.
	switch (event.getNativeKeyCode()) {
	case KeyCodes.KEY_DOWN:
		this.suggestionPopup.selectNextItem();

		DOM.eventPreventDefault(DOM.eventGetCurrentEvent());
		event.stopPropagation();
		break;
	case KeyCodes.KEY_UP:
		this.suggestionPopup.selectPrevItem();

		DOM.eventPreventDefault(DOM.eventGetCurrentEvent());
		event.stopPropagation();
		break;
	case KeyCodes.KEY_PAGEDOWN:
		selectNextPage();
		event.stopPropagation();
		break;
	case KeyCodes.KEY_PAGEUP:
		selectPrevPage();
		event.stopPropagation();
		break;
	case KeyCodes.KEY_ESCAPE:
		reset();
		DOM.eventPreventDefault(DOM.eventGetCurrentEvent());
		event.stopPropagation();
		break;
	case KeyCodes.KEY_TAB:
	case KeyCodes.KEY_ENTER:

		// queue this, may be cancelled by selection
		int selectedIndex = this.suggestionPopup.menu.getSelectedIndex();
		if (!this.allowNewItems && selectedIndex != -1) {

			debug("index before: " + selectedIndex);
			if (this.showClearButton) {
				selectedIndex = selectedIndex - 1;
			}
			if (this.showSelectAllButton) {
				selectedIndex = selectedIndex - 1;
			}

			debug("index after: " + selectedIndex);
			if (selectedIndex == -2) {
				this.clearCmd.execute();
			} else if (selectedIndex == -1) {
				if (this.showSelectAllButton) {
					this.selectAllCmd.execute();
				} else {
					this.clearCmd.execute();
				}
			}

			debug("entered suggestion: " + this.currentSuggestions.get(selectedIndex).caption);
			onSuggestionSelected(this.currentSuggestions.get(selectedIndex));
		} else {
			this.dataReceivedHandler.reactOnInputWhenReady(this.tb.getText());
		}

		event.stopPropagation();
		break;
	}
}
 

/**
 * Triggered when a key was pressed in the suggestion popup.
 *
 * @param event
 *            The KeyDownEvent of the key
 */
private void popupKeyDown(KeyDownEvent event) {
	debug("VComboBoxMultiselect: popupKeyDown(" + event.getNativeKeyCode() + ")");

	// Propagation of handled events is stopped so other handlers such as
	// shortcut key handlers do not also handle the same events.
	switch (event.getNativeKeyCode()) {
	case KeyCodes.KEY_DOWN:
		this.suggestionPopup.selectNextItem();

		DOM.eventPreventDefault(DOM.eventGetCurrentEvent());
		event.stopPropagation();
		break;
	case KeyCodes.KEY_UP:
		this.suggestionPopup.selectPrevItem();

		DOM.eventPreventDefault(DOM.eventGetCurrentEvent());
		event.stopPropagation();
		break;
	case KeyCodes.KEY_PAGEDOWN:
		selectNextPage();
		event.stopPropagation();
		break;
	case KeyCodes.KEY_PAGEUP:
		selectPrevPage();
		event.stopPropagation();
		break;
	case KeyCodes.KEY_ESCAPE:
		reset();
		DOM.eventPreventDefault(DOM.eventGetCurrentEvent());
		event.stopPropagation();
		break;
	case KeyCodes.KEY_TAB:
	case KeyCodes.KEY_ENTER:

		// queue this, may be cancelled by selection
		int selectedIndex = this.suggestionPopup.menu.getSelectedIndex();
		if (!this.allowNewItems && selectedIndex != -1) {

			debug("index before: " + selectedIndex);
			if (this.showClearButton) {
				selectedIndex = selectedIndex - 1;
			}
			if (this.showSelectAllButton) {
				selectedIndex = selectedIndex - 1;
			}

			debug("index after: " + selectedIndex);
			if (selectedIndex == -2) {
				this.clearCmd.execute();
			} else if (selectedIndex == -1) {
				if (this.showSelectAllButton) {
					this.selectAllCmd.execute();
				} else {
					this.clearCmd.execute();
				}
			}

			debug("entered suggestion: " + this.currentSuggestions.get(selectedIndex).caption);
			onSuggestionSelected(this.currentSuggestions.get(selectedIndex));
		} else {
			this.dataReceivedHandler.reactOnInputWhenReady(this.tb.getText());
		}

		event.stopPropagation();
		break;
	}
}
 

@Override
public void onPreviewNativeEvent(NativePreviewEvent previewEvent) {
  if (autoHiders.isEmpty()) {
    return;
  }

  // TODO(danilatos,user,user): Push signal down a layer - clean this up.
  Event event = Event.as(previewEvent.getNativeEvent());
  int lowLevelType = event.getTypeInt();

  // TODO(danilatos): Insert this logic deeply rather than
  // sprinkling it in event handlers. Also the return value
  // of onEventPreview is the reverse of signal handlers.
  SignalEvent signal = SignalEventImpl.create(event, false);
  if (signal == null) {
    return;
  }

  // Key events (excluding escape) and mousewheel events use hideTopmostAutoHiderForKeyEvent
  if (lowLevelType == Event.ONMOUSEWHEEL || signal.isKeyEvent()) {
    if (hideTopmostAutoHiderForKeyEvent(false)) {
      // TODO(user): We don't call previewEvent.cancel() here, since for the floating-buttons
      // menu we want, for example, space-bar to still shift focus to the next blip.
      // The to-do is to audit the previewEvent.cancel call below and see why it's there (and if
      // it's not needed, eliminate it).
      return;
    }
  }

  // Pressing escape at any time causes us to close and discard the event.
  if (signal.getKeySignalType() == KeySignalType.NOEFFECT &&
      event.getKeyCode() == KeyCodes.KEY_ESCAPE) {
    if (hideTopmostAutoHiderForKeyEvent(true)) {
      previewEvent.cancel();
      return;
    }
  }

  // Click events and mouse-wheel events that fall through use hideAllAfter.
  if (lowLevelType == Event.ONMOUSEDOWN || lowLevelType == Event.ONMOUSEWHEEL) {
    hideAllAfter(signal.getTarget());
  }

  // Otherwise we don't do anything and the event continues as usual.
}