org.eclipse.oomph.workingsets.presentation.WorkingSetsPreferencePage.java Source code

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Here is the source code for org.eclipse.oomph.workingsets.presentation.WorkingSetsPreferencePage.java

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/*
 * Copyright (c) 2014 Eike Stepper (Berlin, Germany) and others.
 * 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:
 *    Eike Stepper - initial API and implementation
 */
package org.eclipse.oomph.workingsets.presentation;

import org.eclipse.oomph.internal.ui.AbstractPreferencePage;
import org.eclipse.oomph.workingsets.util.WorkingSetsUtil;

import org.eclipse.emf.common.notify.AdapterFactory;
import org.eclipse.emf.common.ui.URIEditorInput;
import org.eclipse.emf.edit.provider.ComposedAdapterFactory;
import org.eclipse.emf.edit.ui.provider.AdapterFactoryContentProvider;
import org.eclipse.emf.edit.ui.provider.AdapterFactoryLabelProvider;

import org.eclipse.jface.dialogs.Dialog;
import org.eclipse.jface.dialogs.IDialogConstants;
import org.eclipse.jface.preference.IPreferencePageContainer;
import org.eclipse.jface.viewers.TreeViewer;
import org.eclipse.swt.SWT;
import org.eclipse.swt.events.SelectionAdapter;
import org.eclipse.swt.events.SelectionEvent;
import org.eclipse.swt.graphics.Point;
import org.eclipse.swt.layout.GridData;
import org.eclipse.swt.layout.GridLayout;
import org.eclipse.swt.widgets.Button;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Control;
import org.eclipse.swt.widgets.Display;
import org.eclipse.ui.IEditorInput;
import org.eclipse.ui.IPageLayout;
import org.eclipse.ui.IWorkbench;
import org.eclipse.ui.IWorkbenchPage;
import org.eclipse.ui.IWorkbenchWindow;

import java.lang.reflect.Method;

/**
 * @author Eike Stepper
 */
public class WorkingSetsPreferencePage extends AbstractPreferencePage {
    private IWorkbench workbench;

    public WorkingSetsPreferencePage() {
        noDefaultAndApplyButton();
    }

    @Override
    public void init(IWorkbench workbench) {
        this.workbench = workbench;
    }

    @Override
    protected Control doCreateContents(Composite parent) {
        GridLayout layout = new GridLayout();
        layout.marginWidth = 0;
        layout.marginHeight = 0;
        layout.numColumns = 1;

        Composite composite = new Composite(parent, SWT.NONE);
        composite.setLayout(layout);

        TreeViewer treeViewer = new TreeViewer(composite);
        AdapterFactory adapterFactory = new ComposedAdapterFactory(
                ComposedAdapterFactory.Descriptor.Registry.INSTANCE);
        treeViewer.setLabelProvider(new AdapterFactoryLabelProvider(adapterFactory));
        treeViewer.setContentProvider(new AdapterFactoryContentProvider(adapterFactory));
        treeViewer.setInput(WorkingSetsUtil.getWorkingSetGroup());
        treeViewer.getControl().setLayoutData(
                new GridData(GridData.FILL_BOTH | GridData.GRAB_HORIZONTAL | GridData.GRAB_VERTICAL));

        return composite;
    }

    @Override
    protected void contributeButtons(Composite parent) {
        super.contributeButtons(parent);

        GridLayout gridLayout = (GridLayout) parent.getLayout();
        gridLayout.numColumns += 2;

        Button editButton = new Button(parent, SWT.PUSH);
        editButton.setText("Edit...");

        Dialog.applyDialogFont(editButton);
        int widthHint = convertHorizontalDLUsToPixels(IDialogConstants.BUTTON_WIDTH);
        Point minButtonSize = editButton.computeSize(SWT.DEFAULT, SWT.DEFAULT, true);
        GridData data = new GridData(GridData.HORIZONTAL_ALIGN_FILL);
        data.widthHint = Math.max(widthHint, minButtonSize.x);

        editButton.setLayoutData(data);
        editButton.addSelectionListener(new SelectionAdapter() {
            @Override
            public void widgetSelected(SelectionEvent e) {
                // Invoke the close method on the preference dialog, but avoid using internal API, so do it reflectively.
                IPreferencePageContainer container = getContainer();

                try {
                    Method method = container.getClass().getMethod("close");
                    method.invoke(container);
                } catch (Throwable ex) {
                    WorkingSetsEditorPlugin.INSTANCE.log(ex);
                }

                openWorkingSetsEditor();
            }
        });

        Button applyButton = new Button(parent, SWT.PUSH);
        applyButton.setText("Apply");

        Dialog.applyDialogFont(applyButton);
        minButtonSize = applyButton.computeSize(SWT.DEFAULT, SWT.DEFAULT, true);
        data = new GridData(GridData.HORIZONTAL_ALIGN_FILL);
        data.widthHint = Math.max(widthHint, minButtonSize.x);

        applyButton.setLayoutData(data);
        applyButton.addSelectionListener(new SelectionAdapter() {
            @Override
            public void widgetSelected(SelectionEvent e) {
                performApply();
            }
        });
    }

    @Override
    protected void performApply() {
        WorkingSetManager.INSTANCE.apply();
    }

    protected void openWorkingSetsEditor() {
        final IWorkbenchWindow activeWorkbenchWindow = workbench.getActiveWorkbenchWindow();
        Display display = activeWorkbenchWindow.getShell().getDisplay();
        display.asyncExec(new Runnable() {
            public void run() {
                try {
                    IEditorInput editorInput = new URIEditorInput(
                            WorkingSetsUtil.WORKING_SET_GROUP_PREFERENCE_RESOURCE_URI,
                            "Dynamic Working Set Preferences");
                    IWorkbenchPage activePage = activeWorkbenchWindow.getActivePage();
                    activePage.openEditor(editorInput,
                            "org.eclipse.oomph.workingsets.presentation.WorkingSetsEditorID");
                    activePage.showView(IPageLayout.ID_PROP_SHEET);
                } catch (Exception ex) {
                    WorkingSetsEditorPlugin.INSTANCE.log(ex);
                }
            }
        });
    }
}