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import import import import import import
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orgeclipsejfacedialogs*; orgeclipsejfaceoperation*; orgeclipsejfaceviewers*; orgeclipsejfacewizard*; orgeclipseui*; comqualityeclipsefavorites*;
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public class ExtractStringsWizard extends Wizard { private SelectFilesWizardPage selectFilesPage; private SelectStringsWizardPage selectStringsPage; private IStructuredSelection initialSelection; public void init( IWorkbench workbench, IStructuredSelection selection) { initialSelection = selection; } public void addPages() { setWindowTitle("Extract"); selectFilesPage = new SelectFilesWizardPage(); addPage(selectFilesPage); selectStringsPage = new SelectStringsWizardPage(); addPage(selectStringsPage); selectFilesPageinit(initialSelection); } /** * This method is called by the wizard framework when * the user presses the finish button */ public boolean performFinish() { // Perform the operation in a separate thread // so that the operation can be canceled try { getContainer() run(true, true, new IRunnableWithProgress() { public void run(IProgressMonitor monitor) throws InvocationTargetException, InterruptedException {
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TT 11 Dialogs and Wizards
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performOperation(monitor); } }); } catch (InvocationTargetException e) { // Log and report the exception eprintStackTrace(); return false; } catch (InterruptedException e) { // User canceled, so stop but don't close wizard return false; } return true; } /** * Called by the performFinish method on a separate thread * to extract strings from the source file * * @param monitor the progress monitor */ private void performOperation(IProgressMonitor monitor) { ExtractedString[] extracted = selectStringsPagegetSelection(); // Perform the operation here } }
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1127 Dialog Settings Dialog settings can be used to store current values for a wizard or dialog for use the next time that the wizard or dialog is opened In our case, we instantiate and cache the dialog settings object in the wizard s constructor for use by the various wizard pages The getSection( ) call is used to isolate set-
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tings for this wizard from settings for other wizards Each page can then use the various IDialogSetting ues across sessions
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public ExtractStringsWizard() { IDialogSettings favoritesSettings = FavoritesPlugingetDefault()getDialogSettings(); IDialogSettings wizardSettings = favoritesSettingsgetSection( "ExtractStringsWizard"); if (wizardSettings == null) wizardSettings = favoritesSettingsaddNewSection( "ExtractStringsWizard"); setDialogSettings(favoritesSettings); } get( )
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and put( ) methods to load and save val-
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TT 11 Dialogs and Wizards
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1128 Page content based on selection
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Figure 11-10 The Extract Strings wizard
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The first page of our Extract Strings wizard displays source and destination text fields, each with a browse button to the right (see Figure 11-10) The
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createControl( )
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method below creates and aligns each of the wizard page
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package comqualityeclipsefavoriteswizards; import import import import import import import import import import javautil*; orgeclipsecoreresources*; orgeclipsecoreruntime*; orgeclipsejdtcore*; orgeclipsejfaceviewers*; orgeclipsejfacewizard*; orgeclipseswt*; orgeclipseswtevents*; orgeclipseswtlayout*; orgeclipseswtwidgets*;
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public class SelectFilesWizardPage extends WizardPage { private Text sourceFileField; private Text destinationFileField; private IPath initialSourcePath; public SelectFilesWizardPage() { super("selectFiles"); setTitle("Select files"); setDescription( "Select the source and destination files"); } public void createControl(Composite parent) { // $begin code generated by SWT-Designer$ Composite container = new Composite(parent, SWTNULL); final GridLayout gridLayout = new GridLayout(); gridLayoutnumColumns = 3; containersetLayout(gridLayout); setControl(container); final Label label = new Label(container, SWTNONE); final GridData gridData = new GridData(); gridDatahorizontalSpan = 3; labelsetLayoutData(gridData); labelsetText(
TT 11 Dialogs and Wizards
"Select the pluginxml file " + "from which strings will be extracted"); final Label label_1 = new Label(container, SWTNONE); final GridData gridData_1 = new GridData(GridDataHORIZONTAL_ALIGN_END); label_1setLayoutData(gridData_1); label_1setText("Source File:"); sourceFileField = new Text(container, SWTBORDER); sourceFileFieldaddModifyListener(new ModifyListener() { public void modifyText(ModifyEvent e) { updatePageComplete(); } }); sourceFileFieldsetLayoutData( new GridData(GridDataFILL_HORIZONTAL)); final Button button = new Button(container, SWTNONE); buttonaddSelectionListener(new SelectionAdapter() { public void widgetSelected(SelectionEvent e) { browseForSourceFile(); } }); buttonsetText("Browse"); final Label label_2 = new Label(container, SWTNONE); final GridData gridData_2 = new GridData(); gridData_2horizontalSpan = 3; label_2setLayoutData(gridData_2); final Label label_3 = new Label(container, SWTNONE); final GridData gridData_3 = new GridData(); gridData_3horizontalSpan = 3; label_3setLayoutData(gridData_3); label_3setText( "Select the pluginproperties file " + "into which strings will be placed"); final Label label_4 = new Label(container, SWTNONE); final GridData gridData_4 = new GridData(); gridData_4horizontalIndent = 20; label_4setLayoutData(gridData_4); label_4setText("Destination File:");
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destinationFileField = new Text(container, SWTBORDER); destinationFileFieldaddModifyListener( new ModifyListener() { public void modifyText(ModifyEvent e) { updatePageComplete(); } }); destinationFileFieldsetLayoutData( new GridData(GridDataHORIZONTAL_ALIGN_FILL)); final Button button_1 = new Button(container, SWTNONE); button_1 addSelectionListener(new SelectionAdapter() { public void widgetSelected(SelectionEvent e) { browseForDestinationFile(); } }); button_1setText("Browse"); // $end code generated by SWT-Designer$ initContents(); } }
As always, our goal is to save time for the user If the user has already selected something in the workbench, we want to populate the wizard page based upon that information For this wizard page, the init( ) method analyzes the current selection and caches the result, while the initContents() method initializes the field content based upon that cached result
public void init(ISelection selection) { if (!(selection instanceof IStructuredSelection)) return; // Find the first pluginxml file Iterator iter =