org.rubypeople.rdt.internal.ui.preferences.AppearancePreferencePage.java Source code

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Here is the source code for org.rubypeople.rdt.internal.ui.preferences.AppearancePreferencePage.java

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/*******************************************************************************
 * Copyright (c) 2000, 2005 IBM Corporation and others.
 * 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:
 *     IBM Corporation - initial API and implementation
 *******************************************************************************/
package org.rubypeople.rdt.internal.ui.preferences;

import org.eclipse.core.runtime.IStatus;
import org.eclipse.jface.dialogs.Dialog;
import org.eclipse.jface.dialogs.IDialogConstants;
import org.eclipse.jface.preference.IPreferenceStore;
import org.eclipse.jface.preference.PreferencePage;
import org.eclipse.jface.resource.JFaceResources;
import org.eclipse.swt.SWT;
import org.eclipse.swt.layout.GridData;
import org.eclipse.swt.layout.GridLayout;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Control;
import org.eclipse.ui.IWorkbench;
import org.eclipse.ui.IWorkbenchPreferencePage;
import org.eclipse.ui.PlatformUI;
import org.rubypeople.rdt.internal.ui.IRubyHelpContextIds;
import org.rubypeople.rdt.internal.ui.RubyPlugin;
import org.rubypeople.rdt.internal.ui.dialogs.StatusInfo;
import org.rubypeople.rdt.internal.ui.dialogs.StatusUtil;
import org.rubypeople.rdt.internal.ui.wizards.dialogfields.DialogField;
import org.rubypeople.rdt.internal.ui.wizards.dialogfields.IDialogFieldListener;
import org.rubypeople.rdt.internal.ui.wizards.dialogfields.SelectionButtonDialogField;
import org.rubypeople.rdt.internal.ui.wizards.dialogfields.Separator;
import org.rubypeople.rdt.ui.PreferenceConstants;

public class AppearancePreferencePage extends PreferencePage implements IWorkbenchPreferencePage {

    private static final String PREF_METHOD_PARAMETER_NAMES = PreferenceConstants.APPEARANCE_METHOD_PARAMETER_NAMES;
    private static final String STACK_BROWSING_VIEWS_VERTICALLY = PreferenceConstants.BROWSING_STACK_VERTICALLY;

    public static final String PREF_COLORED_LABELS = "colored_labels_in_views"; //$NON-NLS-1$

    private SelectionButtonDialogField fStackBrowsingViewsVertically;
    private SelectionButtonDialogField fShowMethodParameterNames;

    public AppearancePreferencePage() {
        setPreferenceStore(RubyPlugin.getDefault().getPreferenceStore());
        setDescription(PreferencesMessages.AppearancePreferencePage_description);

        IDialogFieldListener listener = new IDialogFieldListener() {
            public void dialogFieldChanged(DialogField field) {
                doDialogFieldChanged(field);
            }
        };

        fShowMethodParameterNames = new SelectionButtonDialogField(SWT.CHECK);
        fShowMethodParameterNames.setDialogFieldListener(listener);
        fShowMethodParameterNames.setLabelText(PreferencesMessages.AppearancePreferencePage_methodtypeparams_label);

        fStackBrowsingViewsVertically = new SelectionButtonDialogField(SWT.CHECK);
        fStackBrowsingViewsVertically.setDialogFieldListener(listener);
        fStackBrowsingViewsVertically.setLabelText(
                PreferencesMessages.AppearancePreferencePage_stackViewsVerticallyInTheRubyBrowsingPerspective);
    }

    private void initFields() {
        IPreferenceStore prefs = getPreferenceStore();
        fShowMethodParameterNames.setSelection(prefs.getBoolean(PREF_METHOD_PARAMETER_NAMES));
        fStackBrowsingViewsVertically.setSelection(prefs.getBoolean(STACK_BROWSING_VIEWS_VERTICALLY));
    }

    /*
     * @see PreferencePage#createControl(Composite)
     */
    public void createControl(Composite parent) {
        super.createControl(parent);
        PlatformUI.getWorkbench().getHelpSystem().setHelp(getControl(),
                IRubyHelpContextIds.APPEARANCE_PREFERENCE_PAGE);
    }

    /*
     * @see PreferencePage#createContents(Composite)
     */
    protected Control createContents(Composite parent) {
        initializeDialogUnits(parent);
        int nColumns = 1;

        Composite result = new Composite(parent, SWT.NONE);
        result.setFont(parent.getFont());

        GridLayout layout = new GridLayout();
        layout.marginHeight = convertVerticalDLUsToPixels(IDialogConstants.VERTICAL_MARGIN);
        layout.marginWidth = 0;
        layout.numColumns = nColumns;
        result.setLayout(layout);

        fShowMethodParameterNames.doFillIntoGrid(result, nColumns);

        new Separator().doFillIntoGrid(result, nColumns);

        fStackBrowsingViewsVertically.doFillIntoGrid(result, nColumns);

        String noteTitle = PreferencesMessages.AppearancePreferencePage_note;
        String noteMessage = PreferencesMessages.AppearancePreferencePage_preferenceOnlyEffectiveForNewPerspectives;
        Composite noteControl = createNoteComposite(JFaceResources.getDialogFont(), result, noteTitle, noteMessage);
        GridData gd = new GridData(GridData.HORIZONTAL_ALIGN_FILL);
        gd.horizontalSpan = 2;
        noteControl.setLayoutData(gd);

        initFields();

        Dialog.applyDialogFont(result);
        return result;
    }

    private void doDialogFieldChanged(DialogField field) {
        updateStatus(getValidationStatus());
    }

    private IStatus getValidationStatus() {
        return new StatusInfo();
    }

    private void updateStatus(IStatus status) {
        setValid(!status.matches(IStatus.ERROR));
        StatusUtil.applyToStatusLine(this, status);
    }

    /*
     * @see IWorkbenchPreferencePage#init(IWorkbench)
     */
    public void init(IWorkbench workbench) {
    }

    /*
     * @see IPreferencePage#performOk()
     */
    public boolean performOk() {
        IPreferenceStore prefs = getPreferenceStore();
        prefs.setValue(PREF_METHOD_PARAMETER_NAMES, fShowMethodParameterNames.isSelected());
        prefs.setValue(STACK_BROWSING_VIEWS_VERTICALLY, fStackBrowsingViewsVertically.isSelected());
        RubyPlugin.getDefault().savePluginPreferences();
        return super.performOk();
    }

    /*
     * @see PreferencePage#performDefaults()
     */
    protected void performDefaults() {
        IPreferenceStore prefs = getPreferenceStore();
        fShowMethodParameterNames.setSelection(prefs.getDefaultBoolean(PREF_METHOD_PARAMETER_NAMES));
        fStackBrowsingViewsVertically.setSelection(prefs.getDefaultBoolean(STACK_BROWSING_VIEWS_VERTICALLY));
        super.performDefaults();
    }
}