org.soitoolkit.tools.generator.plugin.util.StatusPage.java Source code

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Here is the source code for org.soitoolkit.tools.generator.plugin.util.StatusPage.java

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/* 
 * Licensed to the soi-toolkit project under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The soi-toolkit project licenses this file to You 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 org.soitoolkit.tools.generator.plugin.util;

import java.io.IOException;
import java.io.OutputStream;
import java.io.PrintStream;

import org.eclipse.jface.dialogs.IDialogPage;
import org.eclipse.jface.resource.ImageDescriptor;
import org.eclipse.jface.viewers.ISelection;
import org.eclipse.jface.wizard.WizardPage;
import org.eclipse.swt.SWT;
import org.eclipse.swt.custom.StyledText;
import org.eclipse.swt.layout.GridData;
import org.eclipse.swt.layout.GridLayout;
import org.eclipse.swt.widgets.Composite;

/**
 * The "New" wizard page allows setting the container for the new file as well
 * as the file name. The page will only accept file name without the extension
 * OR with the extension that matches the expected one (mpe).
 */

public class StatusPage extends WizardPage {

    private StyledText statusTextArea;

    private ISelection selection;

    /**
     * Constructor for StatusPage.
     * 
     * @param pageName
     */
    public StatusPage(ISelection selection) {
        super("wizardPage");
        setTitle("SOI Toolkit - Create a new component, work in progress...");
        setDescription("Output from creating the new component");
        setImageDescriptor(ImageDescriptor.createFromFile(this.getClass(), "component-large.png"));
        this.selection = selection;
    }

    /**
     * Returns a new PrinstStream that can be used to update the status-text-area on this page.
     * 
     * @return
     */
    public PrintStream createStatusPrintStream() {
        return new PrintStream(new OutputStream() {
            StringBuffer sb = new StringBuffer();

            @Override
            public void write(int b) throws IOException {
                if (b == '\n') {
                    String str = sb.toString();
                    sb.delete(0, sb.length());
                    writeLine(str);
                } else {
                    sb.append(Character.toString((char) b));
                }
            }
        });
    }

    /**
     * Writes a line to the status-text-area in the GUI-thread
     * 
     * @param line
     */
    protected void writeLine(final String line) {
        getContainer().getShell().getDisplay().syncExec(new Runnable() {
            public void run() {
                if (statusTextArea != null) {
                    statusTextArea.setText(line + '\n' + statusTextArea.getText());
                }
            }
        });
    }

    /**
     * @see IDialogPage#createControl(Composite)
     */
    public void createControl(Composite parent) {
        Composite container = new Composite(parent, SWT.NULL);
        GridLayout layout = new GridLayout();
        container.setLayout(layout);
        layout.numColumns = 1;
        layout.verticalSpacing = 9;

        statusTextArea = new StyledText(container, SWT.BORDER | SWT.MULTI | SWT.V_SCROLL | SWT.H_SCROLL);
        statusTextArea.setLayoutData(
                new GridData(GridData.FILL_BOTH | GridData.GRAB_HORIZONTAL | GridData.GRAB_VERTICAL));
        statusTextArea.setEditable(false);
        statusTextArea.setText("Press Finish to start the generator!");

        initialize();
        dialogChanged();
        setControl(container);
    }

    /**
     * Tests if the current workbench selection is a suitable container to use.
     */

    private void initialize() {
    }

    /**
     * Ensures that both text fields are set.
     */

    private void dialogChanged() {
        updateStatus(null);
    }

    private void updateStatus(String message) {
        setErrorMessage(message);
        setPageComplete((message == null));
    }

}