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   1 /**********************************************************************
   2  * Copyright (c) 2003 IBM Corporation and others.
   3  * All rights reserved. This program and the accompanying materials
   4  * are made available under the terms of the Common Public License v1.0
   5  * which accompanies this distribution, and is available at
   6  * http://www.eclipse.org/legal/cpl-v10.html
   7  *
   8  * Contributors:
   9  *    IBM - Initial API and implementation
  10  **********************************************************************/
  11 package org.eclipse.webbrowser.internal;
  12
  13 import java.util.Iterator;
  14
  15 import org.eclipse.jface.viewers.*;
  16 import org.eclipse.jface.window.Window;
  17 import org.eclipse.swt.SWT;
  18 import org.eclipse.swt.events.SelectionAdapter;
  19 import org.eclipse.swt.events.SelectionEvent;
  20 import org.eclipse.swt.layout.GridData;
  21 import org.eclipse.swt.layout.GridLayout;
  22 import org.eclipse.swt.widgets.*;
  23 import org.eclipse.ui.help.WorkbenchHelp;
  24 import org.eclipse.webbrowser.IExternalWebBrowser;
  25 import org.eclipse.webbrowser.IExternalWebBrowserWorkingCopy;
  26 import org.eclipse.webbrowser.IInternalWebBrowser;
  27 import org.eclipse.webbrowser.IInternalWebBrowserWorkingCopy;
  28 import org.eclipse.webbrowser.IWebBrowser;
  29 import org.eclipse.jface.viewers.CheckStateChangedEvent;
  30 import org.eclipse.jface.viewers.CheckboxTableViewer;
  31 import org.eclipse.jface.viewers.ICheckStateListener;
  32 /**
  33  *
  34  */
  35 public class BrowserTableComposite extends Composite {
  36         protected Table table;
  37         protected CheckboxTableViewer tableViewer;
  38         protected Button edit;
  39         protected Button remove;
  40         protected Button search;
  41         protected IWebBrowser selection;
  42
  43         protected Label location;
  44         protected Label parameters;
  45
  46         public BrowserTableComposite(Composite parent, int style) {
  47                 super(parent, style);
  48                 createWidgets();
  49         }
  50
  51         protected void createWidgets() {
  52                 GridLayout layout = new GridLayout();
  53                 layout.horizontalSpacing = 5;
  54                 layout.verticalSpacing = 5;
  55                 layout.marginWidth = 0;
  56                 layout.marginHeight = 0;
  57                 layout.numColumns = 2;
  58                 setLayout(layout);
  59
  60                 GridData data = new GridData(GridData.FILL_BOTH);
  61                 setLayoutData(data);
  62
  63                 Label label = new Label(this, SWT.NONE);
  64                 label.setText(WebBrowserUIPlugin.getResource("%browserList"));
  65                 data = new GridData(GridData.FILL_HORIZONTAL | GridData.VERTICAL_ALIGN_CENTER);
  66                 data.horizontalSpan = 2;
  67                 label.setLayoutData(data);
  68
  69                 table = new Table(this, SWT.CHECK | SWT.BORDER | SWT.V_SCROLL | SWT.H_SCROLL | SWT.SINGLE | SWT.FULL_SELECTION);
  70                 data = new GridData(GridData.FILL_HORIZONTAL | GridData.VERTICAL_ALIGN_FILL);
  71                 data.widthHint = 300;
  72                 table.setLayoutData(data);
  73                 table.setHeaderVisible(false);
  74                 table.setLinesVisible(false);
  75
  76                 TableLayout tableLayout = new TableLayout();
  77                 new TableColumn(table, SWT.NONE);
  78
  79                 tableLayout.addColumnData(new ColumnWeightData(100));
  80
  81                 table.setLayout(tableLayout);
  82
  83                 tableViewer = new CheckboxTableViewer(table);
  84
  85                 tableViewer.setContentProvider(new BrowserContentProvider());
  86                 tableViewer.setLabelProvider(new BrowserTableLabelProvider());
  87
  88                 tableViewer.setInput("root");
  89
  90                 // uncheck any other elements that might be checked and leave only the element checked to
  91                 // remain checked since one can only chose one brower at a time to be current.
  92                 tableViewer.addCheckStateListener(new ICheckStateListener() {
  93                         public void checkStateChanged(CheckStateChangedEvent e) {
  94                                 checkNewDefaultBrowser(e.getElement());
  95                                 IWebBrowser browser = (IWebBrowser) e.getElement();
  96                                 BrowserManager.getInstance().setCurrentWebBrowser(browser);
  97
  98                                 // if no other browsers are checked, don't allow the single one currently
  99                                 // checked to become unchecked, and lose a current browser. That is, don't
 100                                 // permit unchecking if no other item is checked which is supposed to be the case.
 101                                 Object[] obj = tableViewer.getCheckedElements();
 102                            if (obj.length == 0)
 103                                 tableViewer.setChecked(e.getElement(), true);
 104                         }
 105                 });
 106
 107                 // set a default, checked browser based on the current browser. If there is not a
 108                 // current browser, but the first item exists, use that instead.
 109                 // This will work currently until workbench shutdown, because current browser is not yet persisted.
 110                 IWebBrowser browser = BrowserManager.getInstance().getCurrentWebBrowser();
 111                 if (browser != null)
 112                         tableViewer.setChecked(browser, true);
 113                 else {
 114                         Object obj = tableViewer.getElementAt(0);
 115                         if (obj != null)
 116                                 tableViewer.setChecked(obj, true);
 117                 }
 118
 119                 tableViewer.addSelectionChangedListener(new ISelectionChangedListener() {
 120                         public void selectionChanged(SelectionChangedEvent event) {
 121                                 Object obj = getSelection(event.getSelection());
 122
 123                                 if (obj instanceof IInternalWebBrowser) {
 124                                         selection = (IInternalWebBrowser) obj;
 125                                         remove.setEnabled(false);
 126                                         edit.setEnabled(true);
 127                                 } else if (obj instanceof IExternalWebBrowser) {
 128                                         selection = (IExternalWebBrowser) obj;
 129                                         remove.setEnabled(true);
 130                                         edit.setEnabled(true);
 131                                 } else
 132                                         selection = null;
 133
 134                                 if (selection == null) {
 135                                         edit.setEnabled(false);
 136                                         remove.setEnabled(false);
 137                                 }
 138                         }
 139                 });
 140
 141                 Composite buttonComp = new Composite(this, SWT.NONE);
 142                 layout = new GridLayout();
 143                 layout.horizontalSpacing = 0;
 144                 layout.verticalSpacing = 5;
 145                 layout.marginWidth = 0;
 146                 layout.marginHeight = 0;
 147                 layout.numColumns = 1;
 148                 buttonComp.setLayout(layout);
 149                 data = new GridData(GridData.HORIZONTAL_ALIGN_END | GridData.VERTICAL_ALIGN_FILL);
 150                 buttonComp.setLayoutData(data);
 151
 152                 Button add = SWTUtil.createButton(buttonComp, WebBrowserUIPlugin.getResource("%add"));
 153                 add.addSelectionListener(new SelectionAdapter() {
 154                         public void widgetSelected(SelectionEvent e) {
 155                                 ExternalBrowserDialog dialog = new ExternalBrowserDialog(getShell());
 156                                 if (dialog.open() == Window.CANCEL)
 157                                         return;
 158                                 tableViewer.refresh();
 159                         }
 160                 });
 161
 162                 edit = SWTUtil.createButton(buttonComp, WebBrowserUIPlugin.getResource("%edit"));
 163                 edit.addSelectionListener(new SelectionAdapter() {
 164                         public void widgetSelected(SelectionEvent e) {
 165                                 IWebBrowser browser2 = getSelectedWebBrowser();
 166
 167                                 if (browser2 instanceof IInternalWebBrowser) {
 168                                         IInternalWebBrowserWorkingCopy wc = ((IInternalWebBrowser) browser2).getWorkingCopy();
 169                                         InternalBrowserDialog dialog = new InternalBrowserDialog(getShell(), wc);
 170                                         if (dialog.open() != Window.CANCEL) {
 171                                                 try {
 172                                                         tableViewer.refresh(wc.save());
 173                                                 } catch (Exception ex) { }
 174                                         }
 175                                 }
 176                                 else if(browser2 instanceof IExternalWebBrowser) {
 177                                         IExternalWebBrowserWorkingCopy wc = ((IExternalWebBrowser) browser2).getWorkingCopy();
 178                                         ExternalBrowserDialog dialog = new ExternalBrowserDialog(getShell(), wc);
 179                                         if (dialog.open() != Window.CANCEL) {
 180                                                 try {
 181                                                         tableViewer.refresh(wc.save());
 182                                                 } catch (Exception ex) { }
 183                                         }
 184                                 }
 185                    }
 186                 });
 187                 edit.setEnabled(false);
 188
 189                 remove = SWTUtil.createButton(buttonComp, WebBrowserUIPlugin.getResource("%remove"));
 190                 remove.addSelectionListener(new SelectionAdapter() {
 191                         public void widgetSelected(SelectionEvent e) {
 192                                 IWebBrowser browser2 = getSelectedWebBrowser();
 193                                 try {
 194                                         if (browser2 instanceof IInternalWebBrowser){
 195                                                 remove.setEnabled(false);
 196                                                 return; // nothing else possible to do
 197                     }
 198                                         else if(browser2 instanceof IExternalWebBrowser) {
 199                                                 remove.setEnabled(true);
 200                        ((IExternalWebBrowser) browser2).delete();
 201
 202                                                 tableViewer.remove(browser2);
 203
 204                                                 // need here to ensure that if the item deleted was checked, ie, was
 205                                                 // the current browser, that the new current browser will be the first in the
 206                                                 // list, typically, the internal browser, which cannot be deleted, and be current.
 207                                                 if(((IExternalWebBrowser) browser2) == BrowserManager.getInstance().getCurrentWebBrowser()){
 208                                                         Object obj = tableViewer.getElementAt(0);
 209                                                                 if(obj != null){
 210                                                                         BrowserManager.getInstance().setCurrentWebBrowser((InternalWebBrowser)obj);
 211                                                                         tableViewer.setChecked(obj, true);
 212                                                                 }
 213                                                 }
 214                                         }
 215                                 } catch (Exception ex) { }
 216                         }
 217                 });
 218                 remove.setEnabled(false);
 219
 220                 search = SWTUtil.createButton(buttonComp, WebBrowserUIPlugin.getResource("%search"));
 221                 search.addSelectionListener(new SelectionAdapter() {
 222                         public void widgetSelected(SelectionEvent e) {
 223                                 java.util.List browsersToCreate = BrowserSearcher.search(getShell());
 224
 225                                 if (browsersToCreate == null) // cancelled
 226                                         return;
 227
 228                                 if (browsersToCreate.isEmpty()) { // no browsers found
 229                                         WebBrowserUtil.openMessage(WebBrowserUIPlugin.getResource("%searchingNoneFound"));
 230                                         return;
 231                                 }
 232
 233                                 Iterator iterator = browsersToCreate.iterator();
 234                                 while (iterator.hasNext()) {
 235                                         IExternalWebBrowserWorkingCopy browser2 = (IExternalWebBrowserWorkingCopy) iterator.next();
 236                                         browser2.save();
 237                                 }
 238                                 tableViewer.refresh();
 239                         }
 240                 });
 241                 WorkbenchHelp.setHelp(search, ContextIds.PREF_BROWSER_EXTERNAL_SEARCH);
 242
 243                 tableViewer.addCheckStateListener(new ICheckStateListener() {
 244                         public void checkStateChanged(CheckStateChangedEvent e) {
 245                                 checkNewDefaultBrowser(e.getElement());
 246                                 IWebBrowser browser2 = (IWebBrowser) e.getElement();
 247                                 BrowserManager.getInstance().setCurrentWebBrowser(browser2);
 248                         }
 249                 });
 250                 search.setEnabled(true);
 251         }
 252
 253         public IWebBrowser getSelectedWebBrowser() {
 254                 return selection;
 255         }
 256
 257         protected Object getSelection(ISelection sel2) {
 258                 IStructuredSelection sel = (IStructuredSelection) sel2;
 259                 return sel.getFirstElement();
 260         }
 261
 262         // Uncheck all the items except the current one that was just checked
 263         protected void checkNewDefaultBrowser(Object browser) {
 264                 TableItem[] children = tableViewer.getTable().getItems();
 265                 for (int i = 0; i < children.length; i++) {
 266                         TableItem item = children[i];
 267
 268                         if (!(item.getData().equals(browser)))
 269                                 item.setChecked(false);
 270                 }
 271         }
 272 }