/*
* 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 jetbrains.mps.editor.runtime.commands.EditorCommand;
import jetbrains.mps.openapi.editor.EditorContext;
import jetbrains.mps.openapi.editor.assist.ContextAssistant;
import jetbrains.mps.openapi.editor.menus.transformation.ActionItem;
import jetbrains.mps.openapi.editor.menus.transformation.TransformationMenuItem;
import org.jetbrains.annotations.NotNull;
import org.jetbrains.annotations.Nullable;
import java.awt.Component;
import java.util.ArrayList;
import java.util.List;
public class ContextAssistantController implements ContextAssistant, ActionItemExecutor {
private final EditorContext myEditorContext;
private final ContextAssistantView myView;
@Nullable
private ActionItem myHelpAction;
public ContextAssistantController(final EditorContext editorContext, ContextAssistantView view) {
myEditorContext = editorContext;
myView = view;
}
public void setHelpAction(@Nullable ActionItem helpAction) {
myHelpAction = helpAction;
}
@Override
public void showMenu(@NotNull List<TransformationMenuItem> items) {
myView.showMenu(convertToStep(items));
}
@NotNull
private MenuItemListStep convertToStep(List<TransformationMenuItem> items) {
List<TransformationMenuItem> itemsWithHelp;
if (myHelpAction != null && myHelpAction.canExecute("")) {
itemsWithHelp = new ArrayList<>(items);
itemsWithHelp.add(myHelpAction);
} else {
itemsWithHelp = items;
}
return new MenuItemListStep(this, itemsWithHelp);
}
@Override
public void hideMenu() {
myView.hideMenu();
}
@Override
public void focusMenu() {
myView.requestFocus();
}
@Override
public boolean hasFocus() {
return myView.hasFocus();
}
private void jumpToEditor(boolean forced) {
Component component = (Component) myEditorContext.getEditorComponent();
FocusUtil.requestFocus(component, forced);
}
@Override
public void executeActionItem(final ActionItem item) {
if (item == myHelpAction) {
item.execute("");
} else {
jumpToEditor(false);
switch (item.getCommandPolicy()) {
case COMMAND_REQUIRED:
myEditorContext.getRepository().getModelAccess().executeCommand(new EditorCommand(myEditorContext) {
@Override
protected void doExecute() {
item.execute("");
}
});
break;
case COMMAND_UNSUPPORTED:
item.execute("");
break;
default:
throw new IllegalArgumentException("Unknown command policy " + item.getCommandPolicy());
}
myEditorContext.getContextAssistantManager().scheduleUpdate();
}
}
}