TextViewDialog.java

// ============================================================================
//
// Copyright (C) 2006-2016 Talend Inc. - www.talend.com
//
// This source code is available under agreement available at
// %InstallDIR%\features\org.talend.rcp.branding.%PRODUCTNAME%\%PRODUCTNAME%license.txt
//
// You should have received a copy of the agreement
// along with this program; if not, write to Talend SA
// 9 rue Pages 92150 Suresnes, France
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package com.amalto.workbench.dialogs;

import java.util.ArrayList;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.eclipse.jface.dialogs.Dialog;
import org.eclipse.jface.dialogs.MessageDialog;
import org.eclipse.jface.text.Document;
import org.eclipse.jface.text.TextViewer;
import org.eclipse.jface.viewers.IStructuredContentProvider;
import org.eclipse.jface.viewers.ITreeContentProvider;
import org.eclipse.jface.viewers.LabelProvider;
import org.eclipse.jface.viewers.Viewer;
import org.eclipse.swt.SWT;
import org.eclipse.swt.graphics.Image;
import org.eclipse.swt.layout.GridData;
import org.eclipse.swt.layout.GridLayout;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Control;
import org.eclipse.swt.widgets.Shell;
import org.eclipse.ui.ISharedImages;
import org.eclipse.ui.PlatformUI;
import org.w3c.dom.Element;
import org.w3c.dom.NodeList;

import com.amalto.workbench.i18n.Messages;
import com.amalto.workbench.image.ImageCache;

public class TextViewDialog extends Dialog {

    private static Log log = LogFactory.getLog(TextViewDialog.class);

    private final static int BUTTON_CLOSE = 10;

    protected String text;

    protected TextViewer textViewer;

    /**
     * @param parentShell
     */
    public TextViewDialog(Shell parentShell, String text) {
        super(parentShell);
        this.text = text;
    }

    protected Control createDialogArea(Composite parent) {

        try {
            // Should not really be here but well,....
            parent.getShell().setText(Messages.TextViewDialog_TextView);

            Composite composite = (Composite) super.createDialogArea(parent);
            GridLayout layout = (GridLayout) composite.getLayout();
            layout.numColumns = 1;

            textViewer = new TextViewer(composite, SWT.MULTI | SWT.H_SCROLL | SWT.V_SCROLL);
            textViewer.getControl().setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, true, 1, 1));
            ((GridData) textViewer.getControl().getLayoutData()).heightHint = 250;
            ((GridData) textViewer.getControl().getLayoutData()).widthHint = 250;
            textViewer.setEditable(false);
            Document doc = new Document(text);
            textViewer.setDocument(doc);

            return composite;
        } catch (Exception e) {
            log.error(e.getMessage(), e);
            MessageDialog.openError(this.getShell(), Messages._Error,
                    Messages.TextViewDialog_ErrorMsg + e.getLocalizedMessage());
            return null;
        }

    }

    protected void createButtonsForButtonBar(Composite parent) {
        createButton(parent, BUTTON_CLOSE, Messages.Close, false);
    }

    protected void buttonPressed(int buttonId) {
        switch (buttonId) {
        case BUTTON_CLOSE:
            this.close();
        }
    }

    /**
     * DOM Tree Content Provider
     * 
     * @author bgrieder
     * 
     */
    class DOMTreeContentProvider implements IStructuredContentProvider, ITreeContentProvider {

        public DOMTreeContentProvider() {
        }

        public void inputChanged(Viewer v, Object oldInput, Object newInput) {
        }

        public void dispose() {
        }

        public Object[] getElements(Object parent) {
            return getChildren(parent);
        }

        public Object getParent(Object child) {
            // if (child instanceof Element) {
            return ((Element) child).getParentNode();
            // }
            // return null;
        }

        public Object[] getChildren(Object parent) {
            NodeList nl = ((Element) parent).getChildNodes();
            ArrayList<Element> list = new ArrayList<Element>();
            for (int i = 0; i < nl.getLength(); i++) {
                if (nl.item(i) instanceof Element)
                    list.add((Element) nl.item(i));
            }
            if (list.size() == 0)
                return null;
            else
                return list.toArray(new Element[list.size()]);
        }

        public boolean hasChildren(Object parent) {
            if (parent instanceof Element)
                return ((Element) parent).getChildNodes().getLength() > 1;
            return false;
        }

    }

    /**
     * DOM Tree Label Provider
     * 
     * @author bgrieder
     * 
     */
    class DOMTreeLabelProvider extends LabelProvider {

        public String getText(Object obj) {
            if (obj instanceof Element) {
                Element e = (Element) obj;
                if (((Element) obj).getChildNodes().getLength() > 1)
                    return e.getLocalName();
                else
                    return e.getLocalName() + ": " + e.getTextContent();//$NON-NLS-1$
            }
            return "?? " + obj.getClass().getName() + " : " + obj.toString();//$NON-NLS-1$//$NON-NLS-2$

        }

        public Image getImage(Object obj) {
            if (obj instanceof Element) {
                if (((Element) obj).getChildNodes().getLength() > 1)
                    return PlatformUI.getWorkbench().getSharedImages().getImage(ISharedImages.IMG_OBJ_FOLDER);
                else
                    return PlatformUI.getWorkbench().getSharedImages().getImage(ISharedImages.IMG_OBJ_ELEMENT);
            }

            return ImageCache.getImage("icons/small_warn.gif").createImage();//$NON-NLS-1$
            // return PlatformUI.getWorkbench().getSharedImages().getImage(ISharedImages.IMG_OBJ_ELEMENT);
        }

    }// Class DOM Tree Label Provider

}