/*******************************************************************************
* Copyright (c) 2012-2017 Codenvy, S.A.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* Codenvy, S.A. - initial API and implementation
*******************************************************************************/
package org.eclipse.che.ide.actions;
import com.google.inject.Inject;
import com.google.inject.Singleton;
import org.eclipse.che.ide.CoreLocalizationConstant;
import org.eclipse.che.ide.api.action.AbstractPerspectiveAction;
import org.eclipse.che.ide.api.action.ActionEvent;
import org.eclipse.che.ide.api.editor.EditorAgent;
import org.eclipse.che.ide.api.editor.EditorPartPresenter;
import org.eclipse.che.ide.api.editor.texteditor.HandlesTextOperations;
import org.eclipse.che.ide.api.editor.texteditor.TextEditorOperations;
import javax.validation.constraints.NotNull;
import static java.util.Collections.singletonList;
import static org.eclipse.che.ide.workspace.perspectives.project.ProjectPerspective.PROJECT_PERSPECTIVE_ID;
/**
* Action for 'Signature help', in general should show signature of something callable.
*
* @author Evgen Vidolob
*/
@Singleton
public class SignatureHelpAction extends AbstractPerspectiveAction {
private final EditorAgent editorAgent;
@Inject
public SignatureHelpAction(EditorAgent editorAgent, CoreLocalizationConstant constant) {
super(singletonList(PROJECT_PERSPECTIVE_ID), constant.signatureName(), constant.signatureDescription(), null, null);
this.editorAgent = editorAgent;
}
@Override
public void updateInPerspective(@NotNull ActionEvent event) {
final EditorPartPresenter editor = editorAgent.getActiveEditor();
boolean isCanDoOperation = false;
HandlesTextOperations handlesOperations;
if (editor instanceof HandlesTextOperations) {
handlesOperations = (HandlesTextOperations)editor;
isCanDoOperation = handlesOperations.canDoOperation(TextEditorOperations.SIGNATURE_HELP);
}
event.getPresentation().setEnabledAndVisible(isCanDoOperation);
}
@Override
public void actionPerformed(ActionEvent e) {
final EditorPartPresenter editor = editorAgent.getActiveEditor();
HandlesTextOperations handlesOperations;
if (editor instanceof HandlesTextOperations) {
handlesOperations = (HandlesTextOperations)editor;
if (handlesOperations.canDoOperation(TextEditorOperations.SIGNATURE_HELP)) {
handlesOperations.doOperation(TextEditorOperations.SIGNATURE_HELP);
}
}
}
}