Package de.innovationgate.eclipse.wgadesigner.dialogs

Source Code of de.innovationgate.eclipse.wgadesigner.dialogs.AddExternalDesignDialog

/*******************************************************************************
* Copyright (c) 2009, 2010 Innovation Gate GmbH.
* 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:
*     Innovation Gate GmbH - initial API and implementation
******************************************************************************/
package de.innovationgate.eclipse.wgadesigner.dialogs;

import java.io.IOException;

import org.eclipse.core.resources.IContainer;
import org.eclipse.core.resources.IFolder;
import org.eclipse.core.resources.IProject;
import org.eclipse.core.resources.IWorkspaceRoot;
import org.eclipse.core.resources.ResourcesPlugin;
import org.eclipse.core.runtime.CoreException;
import org.eclipse.core.runtime.Status;
import org.eclipse.jface.viewers.ISelectionChangedListener;
import org.eclipse.jface.viewers.SelectionChangedEvent;
import org.eclipse.jface.viewers.TreeViewer;
import org.eclipse.jface.viewers.Viewer;
import org.eclipse.jface.viewers.ViewerFilter;
import org.eclipse.jface.viewers.ViewerSorter;
import org.eclipse.swt.SWT;
import org.eclipse.swt.events.ModifyEvent;
import org.eclipse.swt.events.ModifyListener;
import org.eclipse.swt.layout.GridData;
import org.eclipse.swt.layout.GridLayout;
import org.eclipse.swt.widgets.Combo;
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 org.eclipse.swt.widgets.Tree;
import org.eclipse.swt.widgets.TreeItem;
import org.eclipse.ui.dialogs.SelectionStatusDialog;
import org.eclipse.ui.model.WorkbenchContentProvider;
import org.eclipse.ui.model.WorkbenchLabelProvider;

import de.innovationgate.eclipse.utils.wga.WGADesignStructureHelper;
import de.innovationgate.eclipse.wgadesigner.ResourceIDs;
import de.innovationgate.eclipse.wgadesigner.WGADesignerPlugin;
import de.innovationgate.eclipse.wgadesigner.editors.helpers.WGADesignViewerFilter;
import de.innovationgate.eclipse.wgadesigner.natures.WGARuntime;

public class AddExternalDesignDialog extends SelectionStatusDialog {

  private IProject _selectedProject;

  private TreeViewer _treeViewer;
  private Text _linkNameText;
  private Combo _combo;

  class NameSorter extends ViewerSorter {
    public int compare(Viewer viewer, Object e1, Object e2) {
      if (e1 instanceof IContainer && e2 instanceof IContainer) {
        IContainer ct1 = (IContainer) e1;
        IContainer ct2 = (IContainer) e2;
        return ct1.getName().toLowerCase().compareTo(ct2.getName().toLowerCase());
      }
      return 0;

    }
  }

  public AddExternalDesignDialog(Shell parent, IProject selection) {
    super(parent);
    _selectedProject = selection;
    setHelpAvailable(false);
    setTitle("Select an external Design");

  }

  protected Control createDialogArea(Composite parent) {
    Composite composite = (Composite) super.createDialogArea(parent);
    composite.setLayoutData(new GridData(GridData.FILL, GridData.FILL, true, true));
    GridLayout layout = new GridLayout(3, false);
    composite.setLayout(layout);

    Label messageLabel = createMessageArea(composite);
    _treeViewer = createTreeViewer(composite);
    GridData gridDataLabel = new GridData(GridData.FILL_HORIZONTAL);
    gridDataLabel.horizontalSpan = 3;

    messageLabel.setLayoutData(gridDataLabel);
    GridData gridDataTree = new GridData(GridData.FILL_BOTH);
    gridDataTree.horizontalSpan = 3;
    gridDataTree.widthHint = convertWidthInCharsToPixels(80);
    gridDataTree.heightHint = convertHeightInCharsToPixels(20);
    Tree treeWidget = _treeViewer.getTree();
    treeWidget.setLayoutData(gridDataTree);

    GridData gridDataText = new GridData(GridData.FILL_HORIZONTAL);   
    new Label(composite, SWT.NONE).setText("Name :");
    _linkNameText = new Text(composite, SWT.BORDER);
    _linkNameText.setLayoutData(gridDataText);
    _linkNameText.addModifyListener(new ModifyListener() {

      public void modifyText(ModifyEvent e) {
        textModified();
      }

    });

    _combo = new Combo(composite, SWT.READ_ONLY);
    _combo.setItems(new String[] { "design", "plugin" });
    _combo.setEnabled(false);
    _combo.addModifyListener(new ModifyListener(){

      public void modifyText(ModifyEvent e) {
        textModified();       
      }
     
    });

    return composite;
  }

  protected TreeViewer createTreeViewer(Composite parent) {
    int style = SWT.BORDER | SWT.SINGLE;

    TreeViewer tableViewer = new TreeViewer(new Tree(parent, style));
    tableViewer.setContentProvider(new WorkbenchContentProvider());
    tableViewer.setLabelProvider(WorkbenchLabelProvider.getDecoratingWorkbenchLabelProvider());
    tableViewer.addSelectionChangedListener(new ISelectionChangedListener() {
      public void selectionChanged(SelectionChangedEvent event) {
        updateOKStatus();
      }
    });

    tableViewer.setComparator(new NameSorter());
    tableViewer.addFilter((ViewerFilter) new WGADesignViewerFilter(_selectedProject));

    IWorkspaceRoot workspaceRoot = ResourcesPlugin.getWorkspace().getRoot();
    tableViewer.setInput(workspaceRoot);
    return tableViewer;
  }

  protected void computeResult() {
    try {
      WGARuntime runtime = (WGARuntime) _selectedProject.getNature(ResourceIDs.NATURE_WGA_RUNTIME);

      String target = "designs";

      if (_combo.getText().equals("design")) {
        target = "designs";
      }

      if (_combo.getText().equals("plugin")) {
        target = "plugins";
      }
      IFolder targetFolder=runtime.getProject().getFolder(target);
      WGADesignStructureHelper.createDirklink(targetFolder, (IContainer) _treeViewer.getTree().getSelection()[0].getData(), _linkNameText.getText());
    } catch (CoreException e) {
      WGADesignerPlugin.getDefault().logWarning(e.getMessage(), e);
    } catch (IOException e) {
      WGADesignerPlugin.getDefault().logWarning(e.getMessage(), e);
    }
  }

  protected void updateOKStatus() {
    if (_treeViewer.getTree().getSelection().length > 0 && _treeViewer.getTree().getSelection()[0] != null) {
      _combo.setEnabled(true);
      IContainer treeSelection = (IContainer) _treeViewer.getTree().getSelection()[0].getData();

      if (WGADesignStructureHelper.isDesignPluginFolder(treeSelection)) {
        _combo.setText("plugin");
      } else if (WGADesignStructureHelper.isDesignFolder(treeSelection)) {
        _combo.setText("design");
        _combo.setEnabled(false);
      }

      _linkNameText.setText(treeSelection.getProject().getName());

    }else{
      updateStatus(new Status(Status.ERROR, WGADesignerPlugin.PLUGIN_ID, "Please select a Design or Plugin"));
    }
  }

  protected void textModified() {
    TreeItem[] selections = _treeViewer.getTree().getSelection();
    updateStatus(new Status(Status.OK, WGADesignerPlugin.PLUGIN_ID, ""));
    if (selections.length>0 && selections != null ) {
      Object selection = selections[0].getData();
      if (selection instanceof IContainer) {
        IContainer selectedContainer = (IContainer) selection;
        if (WGADesignStructureHelper.isDesignFolder(selectedContainer)) {

          String target = "designs";

          if (_combo.getText().equals("design")) {
            target = "designs";
          }

          if (_combo.getText().equals("plugin")) {
            target = "plugins";
          }

          IFolder folder = _selectedProject.getFolder(target);

          if (folder.getFolder(_linkNameText.getText()).exists()) {
            updateStatus(new Status(Status.ERROR, WGADesignerPlugin.PLUGIN_ID, _combo.getText() + " already exists."));
          }
        } else {
          updateStatus(new Status(Status.ERROR, WGADesignerPlugin.PLUGIN_ID, "Please select a Design or Plugin"));
        }

      }

    }

  }

}
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