com.google.dart.tools.ui.internal.properties.DartSettingsPropertyPage.java Source code

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Here is the source code for com.google.dart.tools.ui.internal.properties.DartSettingsPropertyPage.java

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/*
 * Copyright (c) 2011, the Dart project authors.
 * 
 * Licensed under the Eclipse Public License v1.0 (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.eclipse.org/legal/epl-v10.html
 * 
 * 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.google.dart.tools.ui.internal.properties;

import com.google.dart.tools.core.DartCore;
import com.google.dart.tools.core.model.DartModelException;
import com.google.dart.tools.core.model.DartProject;
import com.google.dart.tools.ui.internal.util.ExceptionHandler;

import org.eclipse.core.resources.IProject;
import org.eclipse.core.runtime.IPath;
import org.eclipse.core.runtime.NullProgressMonitor;
import org.eclipse.core.runtime.Path;
import org.eclipse.jface.dialogs.IDialogConstants;
import org.eclipse.jface.layout.GridDataFactory;
import org.eclipse.jface.layout.GridLayoutFactory;
import org.eclipse.jface.layout.PixelConverter;
import org.eclipse.jface.window.Window;
import org.eclipse.swt.SWT;
import org.eclipse.swt.events.SelectionAdapter;
import org.eclipse.swt.events.SelectionEvent;
import org.eclipse.swt.widgets.Button;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Control;
import org.eclipse.swt.widgets.Label;
import org.eclipse.swt.widgets.Text;
import org.eclipse.ui.IWorkbenchPropertyPage;
import org.eclipse.ui.dialogs.ContainerSelectionDialog;
import org.eclipse.ui.dialogs.PropertyPage;

/**
 * The property page for Dart build settings. The page currently allows the user to override the
 * default output location.
 */
public class DartSettingsPropertyPage extends PropertyPage implements IWorkbenchPropertyPage {
    private Text outputLocationText;

    /**
     * Create a new DartSettingsPropertyPage.
     */
    public DartSettingsPropertyPage() {

    }

    @Override
    public boolean performOk() {
        DartProject dartProject = getDartProject();

        if (dartProject != null) {
            IPath path = Path.fromPortableString(outputLocationText.getText().trim());

            try {
                dartProject.setOutputLocation(path, new NullProgressMonitor());
            } catch (DartModelException exception) {
                ExceptionHandler.handle(exception, "Dart Core Exception",
                        "Unable to set the project's output location.");
            }
        }

        return true;
    }

    @Override
    protected Control createContents(Composite parent) {
        Composite composite = new Composite(parent, SWT.NONE);
        GridLayoutFactory.swtDefaults().numColumns(3).applyTo(composite);

        Label label = new Label(composite, SWT.NONE);
        label.setText("Output location:");

        outputLocationText = new Text(composite, SWT.BORDER | SWT.SINGLE);
        GridDataFactory.swtDefaults().align(SWT.FILL, SWT.CENTER).grab(true, false).applyTo(outputLocationText);

        Button button = new Button(composite, SWT.PUSH);
        button.setText("Browse...");
        PixelConverter converter = new PixelConverter(button);
        int widthHint = converter.convertHorizontalDLUsToPixels(IDialogConstants.BUTTON_WIDTH);
        GridDataFactory.swtDefaults().hint(widthHint, -1).applyTo(button);
        button.addSelectionListener(new SelectionAdapter() {
            @Override
            public void widgetSelected(SelectionEvent e) {
                handleBrowseButton();
            }
        });

        initializeFromSettings();

        return composite;
    }

    @Override
    protected void performDefaults() {
        DartProject dartProject = getDartProject();

        if (dartProject != null) {
            // Reset the output location to the default directory ('out'). 
            outputLocationText.setText(dartProject.getDefaultOutputFullPath().toPortableString());
        }

        super.performDefaults();
    }

    private DartProject getDartProject() {
        if (!(getElement() instanceof IProject)) {
            return null;
        }

        IProject project = (IProject) getElement();

        return DartCore.create(project);
    }

    private void handleBrowseButton() {
        DartProject project = getDartProject();

        ContainerSelectionDialog dialog = new ContainerSelectionDialog(getShell(), project.getProject(), true,
                "Select output location:");
        dialog.showClosedProjects(false);

        if (dialog.open() == Window.OK) {
            Object[] result = dialog.getResult();
            if (result.length == 0) {
                return;
            }
            IPath path = (IPath) result[0];
            outputLocationText.setText(path.toPortableString());
        }
    }

    private void initializeFromSettings() {
        DartProject dartProject = getDartProject();

        if (dartProject != null) {
            try {
                outputLocationText.setText(dartProject.getOutputLocation().toPortableString());
            } catch (DartModelException exception) {
                ExceptionHandler.handle(exception, "Dart Core Exception",
                        "Unable to retreive the project's output location.");
            }
        }
    }

}