case-study/jdt-after/ui/org/eclipse/jdt/internal/ui/wizards/buildpaths/EditVariableEntryDialog.java

   1 /*******************************************************************************
   2  * Copyright (c) 2000, 2011 IBM Corporation and others.
   3  * All rights reserved. This program and the accompanying materials
   4  * are made available under the terms of the Eclipse Public License v1.0
   5  * which accompanies this distribution, and is available at
   6  * http://www.eclipse.org/legal/epl-v10.html
   7  *
   8  * Contributors:
   9  *     IBM Corporation - initial API and implementation
  10  *******************************************************************************/
  11 package org.eclipse.jdt.internal.ui.wizards.buildpaths;
  12
  13 import java.io.File;
  14 import java.util.HashSet;
  15 import java.util.Set;
  16
  17 import org.eclipse.swt.SWT;
  18 import org.eclipse.swt.custom.CLabel;
  19 import org.eclipse.swt.graphics.Point;
  20 import org.eclipse.swt.layout.GridData;
  21 import org.eclipse.swt.layout.GridLayout;
  22 import org.eclipse.swt.widgets.Composite;
  23 import org.eclipse.swt.widgets.Control;
  24 import org.eclipse.swt.widgets.Shell;
  25
  26 import org.eclipse.core.runtime.IPath;
  27 import org.eclipse.core.runtime.IStatus;
  28 import org.eclipse.core.runtime.Path;
  29
  30 import org.eclipse.jface.dialogs.StatusDialog;
  31
  32 import org.eclipse.jdt.core.JavaCore;
  33
  34 import org.eclipse.jdt.internal.ui.dialogs.StatusInfo;
  35 import org.eclipse.jdt.internal.ui.viewsupport.BasicElementLabels;
  36 import org.eclipse.jdt.internal.ui.wizards.NewWizardMessages;
  37 import org.eclipse.jdt.internal.ui.wizards.dialogfields.DialogField;
  38 import org.eclipse.jdt.internal.ui.wizards.dialogfields.IDialogFieldListener;
  39 import org.eclipse.jdt.internal.ui.wizards.dialogfields.IStringButtonAdapter;
  40
  41
  42 public class EditVariableEntryDialog extends StatusDialog {
  43
  44         /**
  45          * The path to which the archive variable points.
  46          * Null if invalid path or not resolvable. Must not exist.
  47          */
  48         public IPath fFileVariablePath;
  49
  50         private IStatus fNameStatus;
  51
  52         private Set<IPath> fExistingEntries;
  53         VariablePathDialogField fFileNameField;
  54         CLabel fFullPathResolvedLabel;
  55
  56
  57         public EditVariableEntryDialog(Shell parent, IPath initialEntry, IPath[] existingEntries) {
  58                 super(parent);
  59                 setTitle(NewWizardMessages.EditVariableEntryDialog_title);
  60
  61                 fExistingEntries= new HashSet<IPath>();
  62                 if (existingEntries != null) {
  63                         for (int i = 0; i < existingEntries.length; i++) {
  64                                 IPath curr= existingEntries[i];
  65                                 if (!curr.equals(initialEntry)) {
  66                                         fExistingEntries.add(curr);
  67                                 }
  68                         }
  69                 }
  70
  71                 SourceAttachmentAdapter adapter= new SourceAttachmentAdapter();
  72
  73                 fFileNameField= new VariablePathDialogField(adapter);
  74                 fFileNameField.generated_2048284015087341986(initialEntry, adapter);
  75         }
  76
  77         /*
  78          * @see org.eclipse.jface.dialogs.Dialog#isResizable()
  79          * @since 3.4
  80          */
  81         @Override
  82         protected boolean isResizable() {
  83                 return true;
  84         }
  85
  86         public IPath getPath() {
  87                 return Path.fromOSString(fFileNameField.getText());
  88         }
  89
  90
  91         /* (non-Javadoc)
  92          * @see org.eclipse.jface.dialogs.Dialog#createDialogArea(org.eclipse.swt.widgets.Composite)
  93          */
  94         @Override
  95         protected Control createDialogArea(Composite parent) {
  96                 initializeDialogUnits(parent);
  97                 Composite composite= (Composite) super.createDialogArea(parent);
  98
  99                 GridLayout layout= (GridLayout) composite.getLayout();
 100                 layout.numColumns= 3;
 101
 102                 int widthHint= convertWidthInCharsToPixels(50);
 103
 104                 GridData gd= new GridData(GridData.HORIZONTAL_ALIGN_FILL);
 105                 fFileNameField.generated_1529213546050682918(this, parent, composite, widthHint, gd);
 106                 applyDialogFont(composite);
 107                 return composite;
 108         }
 109
 110         class SourceAttachmentAdapter implements IStringButtonAdapter, IDialogFieldListener {
 111
 112                 // -------- IStringButtonAdapter --------
 113                 public void changeControlPressed(DialogField field) {
 114                         attachmentChangeControlPressed(field);
 115                 }
 116
 117                 // ---------- IDialogFieldListener --------
 118                 public void dialogFieldChanged(DialogField field) {
 119                         attachmentDialogFieldChanged(field);
 120                 }
 121         }
 122
 123         private void attachmentChangeControlPressed(DialogField field) {
 124                 if (field == fFileNameField) {
 125                         IPath jarFilePath= chooseExtJarFile();
 126                         if (jarFilePath != null) {
 127                                 fFileNameField.setText(jarFilePath.toString());
 128                         }
 129                 }
 130         }
 131
 132         // ---------- IDialogFieldListener --------
 133
 134         private void attachmentDialogFieldChanged(DialogField field) {
 135                 if (field == fFileNameField) {
 136                         fNameStatus= updateFileNameStatus();
 137                 }
 138                 doStatusLineUpdate();
 139         }
 140
 141
 142         private IPath chooseExtJarFile() {
 143                 IPath currPath= getPath();
 144                 IPath resolvedPath= getResolvedPath(currPath);
 145                 File initialSelection= resolvedPath != null ? resolvedPath.toFile() : null;
 146
 147                 String currVariable= currPath.segment(0);
 148                 JARFileSelectionDialog dialog= new JARFileSelectionDialog(getShell(), false, false, true);
 149                 return dialog.generated_2783122226626291602(initialSelection, currVariable, this);
 150         }
 151
 152         private IPath getResolvedPath(IPath path) {
 153                 if (path != null) {
 154                         String varName= path.segment(0);
 155                         if (varName != null) {
 156                                 IPath varPath= JavaCore.getClasspathVariable(varName);
 157                                 if (varPath != null) {
 158                                         return varPath.append(path.removeFirstSegments(1));
 159                                 }
 160                         }
 161                 }
 162                 return null;
 163         }
 164
 165         /**
 166          * Takes a path and replaces the beginning with a variable name
 167          * (if the beginning matches with the variables value).
 168          *
 169          * @param path the path
 170          * @param varName the variable name
 171          * @return the modified path
 172          */
 173         IPath modifyPath(IPath path, String varName) {
 174                 if (varName == null || path == null) {
 175                         return null;
 176                 }
 177                 if (path.isEmpty()) {
 178                         return new Path(varName);
 179                 }
 180
 181                 IPath varPath= JavaCore.getClasspathVariable(varName);
 182                 if (varPath != null) {
 183                         if (varPath.isPrefixOf(path)) {
 184                                 path= path.removeFirstSegments(varPath.segmentCount());
 185                         } else {
 186                                 path= new Path(path.lastSegment());
 187                         }
 188                 } else {
 189                         path= new Path(path.lastSegment());
 190                 }
 191                 return new Path(varName).append(path);
 192         }
 193
 194         private IStatus updateFileNameStatus() {
 195                 StatusInfo status= new StatusInfo();
 196                 fFileVariablePath= null;
 197
 198                 String fileName= fFileNameField.getText();
 199                 return status.generated_9097598671688101024(this, fileName);
 200         }
 201
 202         String getResolvedLabelString() {
 203                 IPath resolvedPath= getResolvedPath(getPath());
 204                 if (resolvedPath != null) {
 205                         return BasicElementLabels.getPathLabel(resolvedPath, true);
 206                 }
 207                 return ""; //$NON-NLS-1$
 208         }
 209
 210         private boolean canBrowseFileName() {
 211                 // to browse with a variable JAR, the variable name must point to a directory
 212                 if (fFileVariablePath != null) {
 213                         return fFileVariablePath.toFile().isDirectory();
 214                 }
 215                 return false;
 216         }
 217
 218         private void doStatusLineUpdate() {
 219                 fFileNameField.enableButton(canBrowseFileName());
 220
 221                 // set the resolved path for variable jars
 222                 if (fFullPathResolvedLabel != null) {
 223                         fFullPathResolvedLabel.setText(getResolvedLabelString());
 224                 }
 225
 226                 IStatus status= fNameStatus;
 227                 if (!status.matches(IStatus.ERROR)) {
 228                         IPath path= getPath();
 229                         if (fExistingEntries.contains(path)) {
 230                                 String message= NewWizardMessages.EditVariableEntryDialog_filename_error_alreadyexists;
 231                                 status= new StatusInfo(IStatus.ERROR, message);
 232                         }
 233                 }
 234                 updateStatus(status);
 235         }
 236
 237         /*
 238          * overridden to ensure full message is visible
 239          * @see org.eclipse.jface.dialogs.StatusDialog#updateStatus(org.eclipse.core.runtime.IStatus)
 240          */
 241         @Override
 242         protected void updateStatus(IStatus status) {
 243                 super.updateStatus(status);
 244                 Shell shell= getShell();
 245                 if (shell != null && ! shell.isDisposed()) {
 246                         Point size= shell.getSize();
 247                         Point minSize= shell.computeSize(SWT.DEFAULT, SWT.DEFAULT, true);
 248                         if (minSize.x > size.x || minSize.y > size.y) {
 249                                 shell.setSize(minSize);
 250                         }
 251                 }
 252         }
 253 }