com.density.ezsbt.views.SetJavaHomeDialog.java Source code

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Here is the source code for com.density.ezsbt.views.SetJavaHomeDialog.java

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/* Copyright 2015 Density Technologies
 *
 * 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 com.density.ezsbt.views;

import org.eclipse.jface.dialogs.IMessageProvider;
import org.eclipse.jface.dialogs.TitleAreaDialog;
import org.eclipse.jface.preference.IPreferenceStore;
import org.eclipse.swt.SWT;
import org.eclipse.swt.events.SelectionEvent;
import org.eclipse.swt.events.SelectionListener;
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.Label;
import org.eclipse.swt.widgets.Shell;
import org.eclipse.swt.widgets.Text;

import com.density.ezsbt.util.PluginConstants;
import com.density.ezsbt.util.SbtPlugin;

public class SetJavaHomeDialog extends TitleAreaDialog {
    protected ProjectNode node;
    protected Text javaHome;
    protected final static String TITLE = "Set java home of ";
    protected final static String MESSAGE = "Value should not be empty. If so, press OK buttion will do nothing.\n"
            + "Set java home makes effect the next time SBT starts.\n"
            + "Set java home sets the environment variable JAVA_HOME of SBT process.";

    public SetJavaHomeDialog(Shell parentShell, ProjectNode node) {
        super(parentShell);
        this.node = node;
    }

    @Override
    public void create() {
        super.create();
        setTitle(TITLE + node.getName());
        setMessage(MESSAGE, IMessageProvider.INFORMATION);
    }

    @Override
    protected Control createDialogArea(Composite parent) {
        Composite area = (Composite) super.createDialogArea(parent);
        Composite container = new Composite(area, SWT.NONE);
        container.setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, true));
        container.setLayout(new GridLayout(2, false));
        createJavaHomeInput(container);
        Button defaultButton = new Button(container, SWT.DEFAULT);
        defaultButton.setText("default");
        defaultButton.addSelectionListener(new SelectionListener() {

            @Override
            public void widgetSelected(SelectionEvent e) {
                IPreferenceStore store = SbtPlugin.getInstance().getPreferenceStore();
                javaHome.setText(store.getString(PluginConstants.JAVA_HOME_KEY));
            }

            @Override
            public void widgetDefaultSelected(SelectionEvent e) {
            }
        });
        return super.createDialogArea(parent);
    }

    protected void createJavaHomeInput(Composite container) {
        Label label = new Label(container, SWT.NONE);
        label.setText("java home:");
        GridData gridData = new GridData();
        gridData.grabExcessHorizontalSpace = true;
        gridData.horizontalAlignment = GridData.FILL;

        javaHome = new Text(container, SWT.BORDER);
        javaHome.setLayoutData(gridData);
        javaHome.setText(node.getJavaHome());
    }

    @Override
    protected void okPressed() {
        if (!javaHome.getText().isEmpty()) {
            node.setJavaHome(javaHome.getText());
        }
        super.okPressed();
    }
}