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/*
* Copyright 2000-2014 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.openapi.wm;
import com.intellij.openapi.ui.DialogWrapper;
import com.intellij.openapi.ui.popup.util.PopupUtil;
import com.intellij.openapi.util.ActionCallback;
import com.intellij.openapi.util.ActiveRunnable;
import com.intellij.openapi.util.Expirable;
import com.intellij.openapi.util.SystemInfo;
import com.intellij.openapi.util.registry.Registry;
import com.intellij.util.ui.UIUtil;
import org.jetbrains.annotations.NotNull;
import org.jetbrains.annotations.Nullable;
import javax.swing.*;
import java.awt.*;
import java.util.Arrays;
/**
* The container class for focus requests for <code>IdeFocusManager</code>
* @see IdeFocusManager
*/
public abstract class FocusCommand extends ActiveRunnable implements Expirable {
protected Component myDominationComponent;
private Throwable myAllocation;
private ActionCallback myCallback;
private boolean myInvalidatesPendingFurtherRequestors = true;
private Expirable myExpirable;
public boolean isForced() {
return myForced;
}
public void setForced(boolean forced) {
myForced = forced;
}
private boolean myForced;
protected FocusCommand() {
saveAllocation();
}
protected FocusCommand(Component dominationComp) {
myDominationComponent = dominationComp;
saveAllocation();
}
protected FocusCommand(final Object object) {
super(object);
saveAllocation();
}
protected FocusCommand(final Object object, Component dominationComp) {
super(object);
myDominationComponent = dominationComp;
saveAllocation();
}
protected FocusCommand(final Object[] objects) {
super(objects);
saveAllocation();
}
protected FocusCommand(final Object[] objects, Component dominationComp) {
super(objects);
myDominationComponent = dominationComp;
saveAllocation();
}
public final ActionCallback getCallback() {
return myCallback;
}
public final void setCallback(ActionCallback callback) {
myCallback = callback;
}
public boolean isExpired() {
return myExpirable != null && myExpirable.isExpired();
}
public boolean canExecuteOnInactiveApp() {
return false;
}
@Nullable
public KeyEventProcessor getProcessor() {
return null;
}
public boolean invalidatesRequestors() {
return myInvalidatesPendingFurtherRequestors;
}
public FocusCommand setExpirable(Expirable expirable) {
myExpirable = expirable;
return this;
}
public FocusCommand setToInvalidateRequestors(boolean invalidatesPendingFurtherRequestors) {
myInvalidatesPendingFurtherRequestors = invalidatesPendingFurtherRequestors;
return this;
}
@Nullable
public final Component getDominationComponent() {
return myDominationComponent;
}
public boolean dominatesOver(FocusCommand cmd) {
final Component thisComponent = PopupUtil.getOwner(getDominationComponent());
final Component thatComponent = PopupUtil.getOwner(cmd.getDominationComponent());
if (thisComponent != null && thatComponent != null) {
return thisComponent != thatComponent && SwingUtilities.isDescendingFrom(thisComponent, thatComponent);
}
return false;
}
public final FocusCommand saveAllocation() {
myAllocation = new Exception();
return this;
}
public Throwable getAllocation() {
return myAllocation;
}
public boolean canFocusChangeFrom(@Nullable Component component) {
return true;
}
@Override
public String toString() {
final Object[] objects = getEqualityObjects();
return "FocusCommand objectCount=" + objects.length + " objects=" + Arrays.asList(objects);
}
public static class ByComponent extends FocusCommand {
private Component myToFocus;
public ByComponent(@Nullable Component toFocus) {
this(toFocus, toFocus);
}
public ByComponent(@Nullable Component toFocus, @Nullable Component dominationComponent) {
super(toFocus, dominationComponent);
myToFocus = toFocus;
}
@NotNull
public final ActionCallback run() {
if (myToFocus != null) {
if (Registry.is("actionSystem.doNotStealFocus")) {
Window topWindow = SwingUtilities.windowForComponent(myToFocus);
UIUtil.setAutoRequestFocus(topWindow, topWindow.isActive());
while (topWindow.getOwner() != null) {
topWindow = SwingUtilities.windowForComponent(topWindow);
UIUtil.setAutoRequestFocus(topWindow, topWindow.isActive());
}
if (topWindow.isActive()) {
if (!myToFocus.requestFocusInWindow()) {
myToFocus.requestFocus();
}
} else {
myToFocus.requestFocusInWindow();
}
} else {
// This change seems reasonable to me. But as far as some implementations
// can ignore the "forced" parameter we can get bad focus behaviour.
// So let's start from mac.
if (!(myToFocus.requestFocusInWindow())) {
if (!SystemInfo.isMac || isForced() ) {
myToFocus.requestFocus();
}
}
}
}
clear();
return new ActionCallback.Done();
}
private void clear() {
myToFocus = null;
myDominationComponent = null;
}
@Override
public boolean isExpired() {
if (myToFocus == null) {
return true;
}
if (SwingUtilities.getWindowAncestor(myToFocus) == null) {
clear();
return true;
}
return false;
}
public Component getComponent() {
return myToFocus;
}
@Override
public boolean canFocusChangeFrom(@Nullable Component component) {
DialogWrapper dialog = DialogWrapper.findInstance(component);
return (dialog == null) || (dialog == DialogWrapper.findInstance(myToFocus));
}
}
}
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