/*
* Copyright 2003-2016 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 jetbrains.mps.nodeEditor.cells.contextAssistant;
import com.intellij.openapi.ui.popup.ListPopupStep;
import com.intellij.openapi.ui.popup.PopupStep;
import jetbrains.mps.openapi.editor.menus.transformation.ActionItem;
import jetbrains.mps.openapi.editor.menus.transformation.TransformationMenuItem;
import jetbrains.mps.openapi.editor.menus.transformation.TransformationMenuItemVisitor;
import jetbrains.mps.openapi.editor.menus.transformation.SubMenu;
import javax.swing.AbstractAction;
import javax.swing.JButton;
import java.awt.event.ActionEvent;
/**
* A menu item visitor that creates a top-level button for the visited menu item.
*/
class TopLevelButtonCreatingVisitor implements TransformationMenuItemVisitor<JButton> {
private final ListPopupStep<TransformationMenuItem> myStep;
TopLevelButtonCreatingVisitor(ListPopupStep<TransformationMenuItem> step) {
myStep = step;
}
@Override
public JButton visit(final ActionItem actionItem) {
return new JButton(new AbstractAction(actionItem.getLabelText("")) {
@Override
public void actionPerformed(ActionEvent e) {
executeFinalChoice(myStep, actionItem);
}
});
}
private static <T> void executeFinalChoice(ListPopupStep<T> step, T value) {
PopupStep popupStep = step.onChosen(value, true);
if (popupStep != PopupStep.FINAL_CHOICE) {
return;
}
Runnable finalRunnable = step.getFinalRunnable();
if (finalRunnable == null) {
return;
}
finalRunnable.run();
}
@Override
public JButton visit(SubMenu subMenu) {
PopupStep subStep = myStep.onChosen(subMenu, false);
if (!(subStep instanceof ListPopupStep)) {
throw new IllegalStateException("sub-step for " + subMenu + " must be a ListPopupStep but was " + subStep);
}
return new StepComboBoxButton(subMenu.getText(), (ListPopupStep<?>) subStep);
}
}