Example usage for org.eclipse.jface.dialogs IDialogConstants HORIZONTAL

Introduction

In this page you can find the example usage for org.eclipse.jface.dialogs IDialogConstants HORIZONTAL_SPACING.

Prototype

int HORIZONTAL_SPACING

To view the source code for org.eclipse.jface.dialogs IDialogConstants HORIZONTAL_SPACING.

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Document

Horizontal spacing in dialog units (value 4).

Usage

From source file:de.tub.tfs.henshin.tggeditor.dialogs.resource.ResourcesDialog.java

License:Open Source License

protected Control createDialogArea(Composite parent) {
    // top level composite
    Composite parentComposite = (Composite) super.createDialogArea(parent);

    // create a composite with standard margins and spacing
    Composite composite = new Composite(parentComposite, SWT.NONE);
    GridLayout layout = new GridLayout();
    layout.marginHeight = 0;// convertVerticalDLUsToPixels(IDialogConstants.VERTICAL_MARGIN);
    layout.marginWidth = convertHorizontalDLUsToPixels(IDialogConstants.HORIZONTAL_MARGIN);
    layout.verticalSpacing = convertVerticalDLUsToPixels(IDialogConstants.VERTICAL_SPACING);
    layout.horizontalSpacing = convertHorizontalDLUsToPixels(IDialogConstants.HORIZONTAL_SPACING);
    composite.setLayout(layout);/*from   www. ja va  2  s.  c o m*/
    composite.setLayoutData(new GridData(GridData.FILL_BOTH));
    composite.setFont(parentComposite.getFont());

    Listener listener = new Listener() {
        public void handleEvent(Event event) {
            setDialogComplete(validate());
        }
    };

    resourceGroup = new FileSelectionGroup(composite, listener, type == SWT.SAVE, "File name:");

    return parentComposite;
}

From source file:descent.internal.ui.dialogs.OptionalMessageDialog.java

License:Open Source License

protected Control createCustomArea(Composite parent) {
    Composite composite = new Composite(parent, SWT.NONE);
    GridLayout layout = new GridLayout();
    layout.marginHeight = convertVerticalDLUsToPixels(IDialogConstants.VERTICAL_MARGIN);
    layout.marginWidth = convertHorizontalDLUsToPixels(IDialogConstants.HORIZONTAL_MARGIN);
    layout.horizontalSpacing = convertHorizontalDLUsToPixels(IDialogConstants.HORIZONTAL_SPACING);
    composite.setLayout(layout);//from www .ja  va2  s  .  c o m
    composite.setLayoutData(new GridData(GridData.FILL_BOTH));

    fHideDialogCheckBox = new Button(composite, SWT.CHECK | SWT.LEFT);
    fHideDialogCheckBox.setText(CHECKBOX_TEXT);
    fHideDialogCheckBox.addSelectionListener(new SelectionAdapter() {
        public void widgetSelected(SelectionEvent e) {
            setDialogEnabled(fId, !((Button) e.widget).getSelection());
        }
    });
    applyDialogFont(fHideDialogCheckBox);
    return fHideDialogCheckBox;
}

From source file:descent.internal.ui.preferences.formatter.CreateProfileDialog.java

License:Open Source License

public Control createDialogArea(Composite parent) {

    final int numColumns = 2;

    GridData gd;//w  ww  . j  ava2s .  c om

    final GridLayout layout = new GridLayout(numColumns, false);
    layout.marginHeight = convertVerticalDLUsToPixels(IDialogConstants.VERTICAL_MARGIN);
    layout.marginWidth = convertHorizontalDLUsToPixels(IDialogConstants.HORIZONTAL_MARGIN);
    layout.verticalSpacing = convertVerticalDLUsToPixels(IDialogConstants.VERTICAL_SPACING);
    layout.horizontalSpacing = convertHorizontalDLUsToPixels(IDialogConstants.HORIZONTAL_SPACING);

    final Composite composite = new Composite(parent, SWT.NONE);
    composite.setLayout(layout);

    // Create "Profile name:" label
    gd = new GridData(GridData.FILL_HORIZONTAL);
    gd.horizontalSpan = numColumns;
    gd.widthHint = convertWidthInCharsToPixels(60);
    final Label nameLabel = new Label(composite, SWT.WRAP);
    nameLabel.setText(FormatterMessages.CreateProfileDialog_profile_name_label_text);
    nameLabel.setLayoutData(gd);

    // Create text field to enter name
    gd = new GridData(GridData.FILL_HORIZONTAL);
    gd.horizontalSpan = numColumns;
    fNameText = new Text(composite, SWT.SINGLE | SWT.BORDER);
    fNameText.setLayoutData(gd);
    fNameText.addModifyListener(new ModifyListener() {
        public void modifyText(ModifyEvent e) {
            doValidation();
        }
    });

    // Create "Initialize settings ..." label
    gd = new GridData();
    gd.horizontalSpan = numColumns;
    Label profileLabel = new Label(composite, SWT.WRAP);
    profileLabel.setText(FormatterMessages.CreateProfileDialog_base_profile_label_text);
    profileLabel.setLayoutData(gd);

    gd = new GridData(GridData.FILL_HORIZONTAL);
    gd.horizontalSpan = numColumns;
    fProfileCombo = new Combo(composite, SWT.DROP_DOWN | SWT.READ_ONLY);
    fProfileCombo.setLayoutData(gd);

    // "Open the edit dialog now" checkbox
    gd = new GridData();
    gd.horizontalSpan = numColumns;
    fEditCheckbox = new Button(composite, SWT.CHECK);
    fEditCheckbox.setText(FormatterMessages.CreateProfileDialog_open_edit_dialog_checkbox_text);
    fEditCheckbox.addSelectionListener(new SelectionListener() {
        public void widgetSelected(SelectionEvent e) {
            fOpenEditDialog = ((Button) e.widget).getSelection();
        }

        public void widgetDefaultSelected(SelectionEvent e) {
        }
    });

    final IDialogSettings dialogSettings = JavaPlugin.getDefault().getDialogSettings();//.get(PREF_OPEN_EDIT_DIALOG);
    if (dialogSettings.get(PREF_OPEN_EDIT_DIALOG) != null) {
        fOpenEditDialog = dialogSettings.getBoolean(PREF_OPEN_EDIT_DIALOG);
    } else {
        fOpenEditDialog = true;
    }
    fEditCheckbox.setSelection(fOpenEditDialog);

    fProfileCombo.setItems(fSortedNames);
    fProfileCombo.setText(fProfileManager.getDefaultProfile().getName());
    updateStatus(fEmpty);

    applyDialogFont(composite);

    fNameText.setFocus();

    return composite;
}

From source file:descent.internal.ui.preferences.formatter.ModifyDialogTabPage.java

License:Open Source License

/**
 * Create the contents of this tab page. Subclasses cannot override this, 
 * instead they must implement <code>doCreatePreferences</code>. <code>doCreatePreview</code> may also
 * be overridden as necessary./*from ww w.j  av a  2  s .c  om*/
 * @param parent The parent composite
 * @return Created content control
 */
public final Composite createContents(Composite parent) {
    final int numColumns = 4;

    if (fPixelConverter == null) {
        fPixelConverter = new PixelConverter(parent);
    }

    final SashForm fSashForm = new SashForm(parent, SWT.HORIZONTAL);
    fSashForm.setFont(parent.getFont());

    final ScrolledComposite scrollPane = new ScrolledComposite(fSashForm, SWT.V_SCROLL);
    scrollPane.setExpandHorizontal(true);
    scrollPane.setExpandVertical(true);

    final Composite settingsPane = new Composite(scrollPane, SWT.NONE);
    settingsPane.setFont(fSashForm.getFont());

    scrollPane.setContent(settingsPane);

    final GridLayout layout = new GridLayout(numColumns, false);
    layout.verticalSpacing = (int) (1.5
            * fPixelConverter.convertVerticalDLUsToPixels(IDialogConstants.VERTICAL_SPACING));
    layout.horizontalSpacing = fPixelConverter
            .convertHorizontalDLUsToPixels(IDialogConstants.HORIZONTAL_SPACING);
    layout.marginHeight = fPixelConverter.convertVerticalDLUsToPixels(IDialogConstants.VERTICAL_MARGIN);
    layout.marginWidth = fPixelConverter.convertHorizontalDLUsToPixels(IDialogConstants.HORIZONTAL_MARGIN);
    settingsPane.setLayout(layout);
    doCreatePreferences(settingsPane, numColumns);

    scrollPane.setMinSize(settingsPane.computeSize(SWT.DEFAULT, SWT.DEFAULT));

    final Composite previewPane = new Composite(fSashForm, SWT.NONE);
    previewPane.setLayout(createGridLayout(numColumns, true));
    previewPane.setFont(fSashForm.getFont());
    doCreatePreviewPane(previewPane, numColumns);

    initializePage();

    fSashForm.setWeights(new int[] { 3, 3 });
    return fSashForm;
}

From source file:descent.internal.ui.preferences.JavaBasePreferencePage.java

License:Open Source License

protected Control createContents(Composite parent) {
    initializeDialogUnits(parent);/*from  w w w  .j  a v a  2 s .co  m*/

    Composite result = new Composite(parent, SWT.NONE);
    GridLayout layout = new GridLayout();
    layout.marginHeight = convertVerticalDLUsToPixels(IDialogConstants.VERTICAL_MARGIN);
    layout.marginWidth = 0;
    layout.verticalSpacing = convertVerticalDLUsToPixels(10);
    layout.horizontalSpacing = convertHorizontalDLUsToPixels(IDialogConstants.HORIZONTAL_SPACING);
    result.setLayout(layout);

    // new Label(composite, SWT.NONE); // spacer
    // Group linkSettings= new Group(result, SWT.NONE);
    // linkSettings.setLayout(new GridLayout());
    // linkSettings.setLayoutData(new GridData(GridData.FILL_HORIZONTAL));
    // linkSettings.setText(PreferencesMessages.getString("JavaBasePreferencePage.linkSettings.text")); //$NON-NLS-1$
    //addCheckBox(linkSettings, PreferencesMessages.getString("JavaBasePreferencePage.linkJavaBrowsingViewsCheckbox.text"), LINK_BROWSING_VIEW_TO_EDITOR); //$NON-NLS-1$
    //addCheckBox(linkSettings, PreferencesMessages.getString("JavaBasePreferencePage.linkPackageView"), LINK_PACKAGES_TO_EDITOR); //$NON-NLS-1$
    //addCheckBox(linkSettings, PreferencesMessages.getString("JavaBasePreferencePage.linkTypeHierarchy"), LINK_TYPEHIERARCHY_TO_EDITOR); //$NON-NLS-1$

    // new Label(result, SWT.NONE); // spacer

    Group doubleClickGroup = new Group(result, SWT.NONE);
    doubleClickGroup.setLayout(new GridLayout());
    doubleClickGroup.setLayoutData(new GridData(GridData.FILL_HORIZONTAL));
    doubleClickGroup.setText(PreferencesMessages.JavaBasePreferencePage_doubleclick_action);
    addRadioButton(doubleClickGroup, PreferencesMessages.JavaBasePreferencePage_doubleclick_gointo,
            DOUBLE_CLICK, DOUBLE_CLICK_GOES_INTO);
    addRadioButton(doubleClickGroup, PreferencesMessages.JavaBasePreferencePage_doubleclick_expand,
            DOUBLE_CLICK, DOUBLE_CLICK_EXPANDS);

    // new Label(result, SWT.NONE); // spacer

    Group typeHierarchyGroup = new Group(result, SWT.NONE);
    typeHierarchyGroup.setLayout(new GridLayout());
    typeHierarchyGroup.setLayoutData(new GridData(GridData.FILL_HORIZONTAL));
    typeHierarchyGroup.setText(PreferencesMessages.JavaBasePreferencePage_openTypeHierarchy);
    addRadioButton(typeHierarchyGroup, PreferencesMessages.JavaBasePreferencePage_inPerspective,
            OPEN_TYPE_HIERARCHY, OPEN_TYPE_HIERARCHY_IN_PERSPECTIVE);
    addRadioButton(typeHierarchyGroup, PreferencesMessages.JavaBasePreferencePage_inView, OPEN_TYPE_HIERARCHY,
            OPEN_TYPE_HIERARCHY_IN_VIEW_PART);

    Group refactoringGroup = new Group(result, SWT.NONE);
    refactoringGroup.setLayout(new GridLayout());
    refactoringGroup.setLayoutData(new GridData(GridData.FILL_HORIZONTAL));
    refactoringGroup.setText(PreferencesMessages.JavaBasePreferencePage_refactoring_title);
    addCheckBox(refactoringGroup, PreferencesMessages.JavaBasePreferencePage_refactoring_auto_save,
            RefactoringSavePreferences.PREF_SAVE_ALL_EDITORS);

    Group group = new Group(result, SWT.NONE);
    group.setLayout(new GridLayout());
    group.setLayoutData(new GridData(GridData.FILL_HORIZONTAL));
    group.setText(PreferencesMessages.JavaBasePreferencePage_search);

    addCheckBox(group, PreferencesMessages.JavaBasePreferencePage_search_small_menu,
            PreferenceConstants.SEARCH_USE_REDUCED_MENU);

    layout = new GridLayout();
    layout.numColumns = 2;

    Group dontAskGroup = new Group(result, SWT.NONE);
    dontAskGroup.setLayout(layout);
    dontAskGroup.setLayoutData(new GridData(GridData.FILL_HORIZONTAL));
    dontAskGroup.setText(PreferencesMessages.JavaBasePreferencePage_dialogs);

    Label label = new Label(dontAskGroup, SWT.WRAP);
    label.setText(PreferencesMessages.JavaBasePreferencePage_do_not_hide_description);
    GridData data = new GridData(GridData.FILL, GridData.CENTER, true, false);
    data.widthHint = convertVerticalDLUsToPixels(50);
    label.setLayoutData(data);

    Button clearButton = new Button(dontAskGroup, SWT.PUSH);
    clearButton.setText(PreferencesMessages.JavaBasePreferencePage_do_not_hide_button);
    clearButton.setLayoutData(new GridData(GridData.FILL, GridData.BEGINNING, false, false));
    clearButton.addSelectionListener(new SelectionListener() {
        public void widgetSelected(SelectionEvent e) {
            unhideAllDialogs();
        }

        public void widgetDefaultSelected(SelectionEvent e) {
            unhideAllDialogs();
        }
    });

    SWTUtil.setButtonDimensionHint(clearButton);
    Dialog.applyDialogFont(result);
    return result;
}

From source file:descent.internal.ui.preferences.NewJavaProjectPreferencePage.java

License:Open Source License

protected Control createContents(Composite parent) {
    initializeDialogUnits(parent);/*from   w w w .j a  va  2 s .  co  m*/

    Composite result = new Composite(parent, SWT.NONE);
    GridLayout layout = new GridLayout();
    layout.marginHeight = convertVerticalDLUsToPixels(IDialogConstants.VERTICAL_MARGIN);
    layout.marginWidth = 0;
    layout.verticalSpacing = convertVerticalDLUsToPixels(10);
    layout.horizontalSpacing = convertHorizontalDLUsToPixels(IDialogConstants.HORIZONTAL_SPACING);
    layout.numColumns = 2;
    result.setLayout(layout);

    GridData gd = new GridData(GridData.FILL_HORIZONTAL);
    gd.horizontalSpan = 2;

    Group sourceFolderGroup = new Group(result, SWT.NONE);
    layout = new GridLayout();
    layout.numColumns = 2;
    sourceFolderGroup.setLayout(layout);
    sourceFolderGroup.setLayoutData(gd);
    sourceFolderGroup.setText(PreferencesMessages.NewJavaProjectPreferencePage_sourcefolder_label);

    int indent = 0;

    fProjectAsSourceFolder = addRadioButton(sourceFolderGroup,
            PreferencesMessages.NewJavaProjectPreferencePage_sourcefolder_project, SRCBIN_FOLDERS_IN_NEWPROJ,
            IPreferenceStore.FALSE, indent);
    fProjectAsSourceFolder.addSelectionListener(fSelectionListener);

    fFoldersAsSourceFolder = addRadioButton(sourceFolderGroup,
            PreferencesMessages.NewJavaProjectPreferencePage_sourcefolder_folder, SRCBIN_FOLDERS_IN_NEWPROJ,
            IPreferenceStore.TRUE, indent);
    fFoldersAsSourceFolder.addSelectionListener(fSelectionListener);

    indent = convertWidthInCharsToPixels(4);

    fSrcFolderNameLabel = new Label(sourceFolderGroup, SWT.NONE);
    fSrcFolderNameLabel.setText(PreferencesMessages.NewJavaProjectPreferencePage_folders_src);
    fSrcFolderNameText = addTextControl(sourceFolderGroup, fSrcFolderNameLabel, SRCBIN_SRCNAME, indent);
    fSrcFolderNameText.addModifyListener(fModifyListener);

    fBinFolderNameLabel = new Label(sourceFolderGroup, SWT.NONE);
    fBinFolderNameLabel.setText(PreferencesMessages.NewJavaProjectPreferencePage_folders_bin);
    fBinFolderNameText = addTextControl(sourceFolderGroup, fBinFolderNameLabel, SRCBIN_BINNAME, indent);
    fBinFolderNameText.addModifyListener(fModifyListener);

    String[] jreNames = getJRENames();
    if (jreNames.length > 0) {
        Label jreSelectionLabel = new Label(result, SWT.NONE);
        jreSelectionLabel.setText(PreferencesMessages.NewJavaProjectPreferencePage_jrelibrary_label);
        jreSelectionLabel.setLayoutData(new GridData());

        int index = getPreferenceStore().getInt(CLASSPATH_JRELIBRARY_INDEX);
        fJRECombo = new Combo(result, SWT.READ_ONLY);
        fJRECombo.setItems(jreNames);
        fJRECombo.select(index);
        fJRECombo.setLayoutData(new GridData(GridData.HORIZONTAL_ALIGN_FILL));
    }

    validateFolders();

    Dialog.applyDialogFont(result);
    return result;
}

From source file:descent.internal.ui.preferences.WorkInProgressPreferencePage.java

License:Open Source License

protected Control createContents(Composite parent) {
    initializeDialogUnits(parent);/*www  .  j  a  v  a2s.  c om*/

    Composite result = new Composite(parent, SWT.NONE);
    GridLayout layout = new GridLayout();
    layout.marginHeight = convertVerticalDLUsToPixels(IDialogConstants.VERTICAL_MARGIN);
    layout.marginWidth = 0;
    layout.verticalSpacing = convertVerticalDLUsToPixels(10);
    layout.horizontalSpacing = convertHorizontalDLUsToPixels(IDialogConstants.HORIZONTAL_SPACING);
    result.setLayout(layout);

    // Add your controls here

    applyDialogFont(result);
    return result;
}

From source file:descent.internal.ui.refactoring.MessageWizardPage.java

License:Open Source License

public void createControl(Composite parent) {
    initializeDialogUnits(parent);//from   w  w w. j  a  v  a 2  s.  com
    Composite result = new Composite(parent, SWT.NONE);
    setControl(result);
    GridLayout layout = new GridLayout();
    layout.marginHeight = convertVerticalDLUsToPixels(IDialogConstants.VERTICAL_MARGIN) * 3 / 2;
    layout.marginWidth = convertHorizontalDLUsToPixels(IDialogConstants.HORIZONTAL_MARGIN);
    layout.verticalSpacing = convertVerticalDLUsToPixels(IDialogConstants.VERTICAL_SPACING);
    layout.horizontalSpacing = convertHorizontalDLUsToPixels(IDialogConstants.HORIZONTAL_SPACING) * 2;
    layout.numColumns = 2;
    result.setLayout(layout);

    Image image = getMessageImage();
    if (image != null) {
        Label label = new Label(result, SWT.NULL);
        image.setBackground(label.getBackground());
        label.setImage(image);
        label.setLayoutData(new GridData(GridData.HORIZONTAL_ALIGN_CENTER | GridData.VERTICAL_ALIGN_BEGINNING));
    }

    String message = getMessageString();
    if (message != null) {
        Label messageLabel = new Label(result, SWT.WRAP);
        messageLabel.setText(message);
        GridData data = new GridData(
                GridData.GRAB_HORIZONTAL | GridData.HORIZONTAL_ALIGN_FILL | GridData.VERTICAL_ALIGN_BEGINNING);
        data.widthHint = convertHorizontalDLUsToPixels(IDialogConstants.MINIMUM_MESSAGE_AREA_WIDTH);
        messageLabel.setLayoutData(data);
        messageLabel.setFont(result.getFont());
    }
    Dialog.applyDialogFont(result);
}

From source file:descent.internal.ui.text.java.ContentAssistProcessor.java

License:Open Source License

/**
 * Informs the user about the fact that there are no enabled categories in the default content
 * assist set and shows a link to the preferences.
 * //from  w w  w . ja v  a  2 s  .c om
 * @since 3.3
 */
private boolean informUserAboutEmptyDefaultCategory() {
    if (OptionalMessageDialog.isDialogEnabled(PREF_WARN_ABOUT_EMPTY_ASSIST_CATEGORY)) {
        final Shell shell = JavaPlugin.getActiveWorkbenchShell();
        String title = JavaTextMessages.ContentAssistProcessor_all_disabled_title;
        String message = JavaTextMessages.ContentAssistProcessor_all_disabled_message;
        // see PreferencePage#createControl for the 'defaults' label
        final String restoreButtonLabel = JFaceResources.getString("defaults"); //$NON-NLS-1$
        final String linkMessage = Messages.format(
                JavaTextMessages.ContentAssistProcessor_all_disabled_preference_link,
                LegacyActionTools.removeMnemonics(restoreButtonLabel));
        final int restoreId = IDialogConstants.CLIENT_ID + 10;
        final OptionalMessageDialog dialog = new OptionalMessageDialog(PREF_WARN_ABOUT_EMPTY_ASSIST_CATEGORY,
                shell, title, null /* default image */, message, MessageDialog.WARNING,
                new String[] { restoreButtonLabel, IDialogConstants.CLOSE_LABEL }, 1) {
            /*
             * @see descent.internal.ui.dialogs.OptionalMessageDialog#createCustomArea(org.eclipse.swt.widgets.Composite)
             */
            protected Control createCustomArea(Composite composite) {
                // wrap link and checkbox in one composite without space
                Composite parent = new Composite(composite, SWT.NONE);
                GridLayout layout = new GridLayout();
                layout.marginHeight = 0;
                layout.marginWidth = 0;
                layout.verticalSpacing = 0;
                parent.setLayout(layout);

                Composite linkComposite = new Composite(parent, SWT.NONE);
                layout = new GridLayout();
                layout.marginHeight = convertVerticalDLUsToPixels(IDialogConstants.VERTICAL_MARGIN);
                layout.marginWidth = convertHorizontalDLUsToPixels(IDialogConstants.HORIZONTAL_MARGIN);
                layout.horizontalSpacing = convertHorizontalDLUsToPixels(IDialogConstants.HORIZONTAL_SPACING);
                linkComposite.setLayout(layout);

                Link link = new Link(linkComposite, SWT.NONE);
                link.setText(linkMessage);
                link.addSelectionListener(new SelectionAdapter() {
                    public void widgetSelected(SelectionEvent e) {
                        close();
                        PreferencesUtil
                                .createPreferenceDialogOn(shell,
                                        "descent.ui.preferences.CodeAssistPreferenceAdvanced", null, null) //$NON-NLS-1$
                                .open();
                    }
                });
                GridData gridData = new GridData(SWT.FILL, SWT.BEGINNING, true, false);
                gridData.widthHint = this.getMinimumMessageWidth();
                link.setLayoutData(gridData);

                // create checkbox and "don't show this message" prompt
                super.createCustomArea(parent);

                return parent;
            }

            /*
             * @see org.eclipse.jface.dialogs.MessageDialog#createButtonsForButtonBar(org.eclipse.swt.widgets.Composite)
             */
            protected void createButtonsForButtonBar(Composite parent) {
                Button[] buttons = new Button[2];
                buttons[0] = createButton(parent, restoreId, restoreButtonLabel, false);
                buttons[1] = createButton(parent, IDialogConstants.CLOSE_ID, IDialogConstants.CLOSE_LABEL,
                        true);
                setButtons(buttons);
            }
        };
        if (restoreId == dialog.open()) {
            IPreferenceStore store = JavaPlugin.getDefault().getPreferenceStore();
            store.setToDefault(PreferenceConstants.CODEASSIST_CATEGORY_ORDER);
            store.setToDefault(PreferenceConstants.CODEASSIST_EXCLUDED_CATEGORIES);
            CompletionProposalComputerRegistry registry = CompletionProposalComputerRegistry.getDefault();
            registry.reload();
            return true;
        }
    }
    return false;
}

From source file:descent.internal.ui.wizards.JavaProjectWizardFirstPage.java

License:Open Source License

/**
 * Initialize a grid layout with the default Dialog settings.
 *///w  w w  . j a v a 2 s .co m
protected GridLayout initGridLayout(GridLayout layout, boolean margins) {
    layout.horizontalSpacing = convertHorizontalDLUsToPixels(IDialogConstants.HORIZONTAL_SPACING);
    layout.verticalSpacing = convertVerticalDLUsToPixels(IDialogConstants.VERTICAL_SPACING);
    if (margins) {
        layout.marginWidth = convertHorizontalDLUsToPixels(IDialogConstants.HORIZONTAL_MARGIN);
        layout.marginHeight = convertVerticalDLUsToPixels(IDialogConstants.VERTICAL_MARGIN);
    } else {
        layout.marginWidth = 0;
        layout.marginHeight = 0;
    }
    return layout;
}

Example usage for org.eclipse.jface.dialogs IDialogConstants HORIZONTAL_SPACING

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Prototype

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Usage