/*
* Copyright 2000-2012 JetBrains s.r.o.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.intellij.designer.designSurface.tools;
import com.intellij.designer.designSurface.EditableArea;
import com.intellij.designer.designSurface.ZoomType;
import com.intellij.designer.model.RadComponent;
import com.intellij.designer.propertyTable.InplaceContext;
import com.intellij.openapi.actionSystem.ActionManager;
import com.intellij.openapi.actionSystem.ActionPopupMenu;
import com.intellij.openapi.application.ApplicationManager;
import org.jetbrains.annotations.Nullable;
import java.awt.*;
import java.awt.event.InputEvent;
import java.awt.event.KeyEvent;
import java.awt.event.MouseEvent;
import java.util.List;
/**
* @author Alexander Lobas
*/
public class SelectionTool extends InputTool {
private InputTool myTracker;
@Override
public void deactivate() {
deactivateTracker();
super.deactivate();
}
@Override
public void refreshCursor() {
if (myTracker == null) {
super.refreshCursor();
}
}
@Override
protected void handleButtonDown(int button) {
if (myState == STATE_INIT) {
myState = STATE_DRAG;
deactivateTracker();
if (handleTracker()) {
return;
}
if (!myArea.isTree()) {
InputTool tracker = myArea.findTargetTool(myCurrentScreenX, myCurrentScreenY);
if (tracker != null) {
setTracker(tracker);
if (tracker instanceof ResizeTracker) {
myArea.showSelection(false);
}
return;
}
}
RadComponent component = myArea.findTarget(myCurrentScreenX, myCurrentScreenY, null);
if (component == null || component.isBackground()) {
if (!myArea.isTree()) {
MarqueeTracker tracker = new MarqueeTracker();
// Allow marquee dragging within the root (background) layout, and if you click
// without dragging, select that background component
tracker.setSelectBackground(component != null && component.isBackground());
setTracker(tracker);
}
}
else {
Point location = component.convertPoint(myArea.getNativeComponent(), myCurrentScreenX, myCurrentScreenY);
setTracker(component.getDragTracker(location, myInputEvent, myArea.isTree()));
}
}
}
protected boolean handleTracker() {
if (!myArea.isTree() && myInputEvent.isAltDown()) {
setTracker(new MarqueeTracker());
return true;
}
return false;
}
@Override
protected void handleButtonUp(int button) {
myState = STATE_INIT;
setTracker(null);
handleMove(); // hack: update cursor
}
@Override
protected void handlePopup() {
ActionManager actionManager = ActionManager.getInstance();
ActionPopupMenu popupMenu = actionManager.createActionPopupMenu(myArea.getPopupPlace(), myArea.getPopupActions());
MouseEvent event = (MouseEvent)myInputEvent;
popupMenu.getComponent().show(myArea.getNativeComponent(), event.getX(), event.getY());
}
@Override
protected void handleDoubleClick(int button) {
if (button == MouseEvent.BUTTON1 && myToolProvider != null && !myArea.isTree()) {
myToolProvider.startInplaceEditing(null);
}
}
@Override
protected void handleMove() {
if (myState == STATE_INIT) {
InputTool tracker = myArea.findTargetTool(myCurrentScreenX, myCurrentScreenY);
if (tracker == null) {
refreshCursor();
if (ApplicationManager.getApplication().isInternal()) {
myArea.setDescription("Location (" + myCurrentScreenX + " x " + myCurrentScreenY + ")");
}
else {
myArea.setDescription(null);
}
}
else {
if (myInputEvent instanceof MouseEvent) {
try {
tracker.mouseMove((MouseEvent)myInputEvent, myArea);
}
catch (Exception e) {
// pass
}
}
myArea.setCursor(tracker.getDefaultCursor());
myArea.setDescription(tracker.getDescription());
}
}
}
private void setTracker(@Nullable InputTool tracker) {
if (myTracker != tracker) {
deactivateTracker();
myTracker = tracker;
refreshCursor();
if (myTracker != null) {
myToolProvider.hideInspections();
myTracker.setToolProvider(myToolProvider);
myTracker.setArea(myArea);
myTracker.myModifiers = myModifiers;
myTracker.activate();
}
}
}
private void deactivateTracker() {
if (myTracker != null) {
myTracker.deactivate();
myTracker = null;
if (myArea != null) {
myArea.showSelection(true);
}
}
}
@Override
public void mouseDown(MouseEvent event, EditableArea area) throws Exception {
super.mouseDown(event, area);
if (myTracker != null) {
myTracker.mouseDown(event, area);
}
}
@Override
public void mouseUp(MouseEvent event, EditableArea area) throws Exception {
if (myTracker != null) {
myTracker.mouseUp(event, area);
}
super.mouseUp(event, area);
}
@Override
public void mouseMove(MouseEvent event, EditableArea area) throws Exception {
if (myTracker != null) {
myTracker.mouseMove(event, area);
}
super.mouseMove(event, area);
}
@Override
public void mouseDrag(MouseEvent event, EditableArea area) throws Exception {
if (myTracker != null) {
myTracker.mouseDrag(event, area);
}
super.mouseDrag(event, area);
}
@Override
public void mousePopup(MouseEvent event, EditableArea area) throws Exception {
if (myTracker != null) {
myTracker.mousePopup(event, area);
}
super.mousePopup(event, area);
}
@Override
public void mouseDoubleClick(MouseEvent event, EditableArea area) throws Exception {
super.mouseDoubleClick(event, area);
if (myTracker != null) {
myTracker.mouseDoubleClick(event, area);
}
}
@Override
public void keyPressed(KeyEvent event, EditableArea area) throws Exception {
super.keyTyped(event, area);
if (myTracker != null) {
myTracker.keyPressed(event, area);
}
else if (event.getKeyCode() == KeyEvent.VK_ESCAPE) {
List<RadComponent> selection = area.getSelection();
if (!selection.isEmpty()) {
RadComponent component = selection.get(0).getParent();
if (component != null) {
area.select(component);
}
}
}
}
@Override
public void keyTyped(KeyEvent event, EditableArea area) throws Exception {
super.keyTyped(event, area);
if (myTracker != null) {
myTracker.keyTyped(event, area);
}
else if (myToolProvider != null && !area.isTree()) {
handleKeyTyped(event);
}
}
protected void handleKeyTyped(KeyEvent event) {
char keyChar = event.getKeyChar();
switch (keyChar) {
// Zoom
case '-':
case '+':
case '0':
case '1':
ZoomType type;
if (keyChar == '-') {
type = ZoomType.OUT;
}
else if (keyChar == '+') {
type = ZoomType.IN;
}
else if (keyChar == '0') {
type = ZoomType.FIT;
}
else { // '1'
type = ZoomType.ACTUAL;
}
if (myToolProvider.isZoomSupported()) {
myToolProvider.zoom(type);
event.consume();
return;
}
// else: fall through
default:
if (Character.isLetterOrDigit(keyChar) &&
(event.getModifiers() & (InputEvent.ALT_MASK | InputEvent.CTRL_MASK | InputEvent.META_MASK)) == 0) {
myToolProvider.startInplaceEditing(new InplaceContext(keyChar));
}
}
}
@Override
public void keyReleased(KeyEvent event, EditableArea area) throws Exception {
super.keyReleased(event, area);
if (myTracker != null) {
myTracker.keyReleased(event, area);
}
}
}