JavaScriptConsolePreferences.java

package org.eclipse.dltk.javascript.internal.ui.preferences;

import org.eclipse.dltk.javascript.console.JavaScriptConsoleConstants;
import org.eclipse.dltk.javascript.internal.debug.ui.JavaScriptDebugUIPlugin;
import org.eclipse.jface.preference.IPreferenceStore;
import org.eclipse.jface.preference.PreferencePage;
import org.eclipse.swt.SWT;
import org.eclipse.swt.events.ModifyEvent;
import org.eclipse.swt.events.ModifyListener;
import org.eclipse.swt.graphics.Font;
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.swt.widgets.Group;
import org.eclipse.swt.widgets.Label;
import org.eclipse.swt.widgets.Text;
import org.eclipse.ui.IWorkbench;
import org.eclipse.ui.IWorkbenchPreferencePage;

public class JavaScriptConsolePreferences extends PreferencePage implements
		IWorkbenchPreferencePage {

	private Text newPrompt;

	private Text appendPrompt;

	protected IPreferenceStore doGetPreferenceStore() {
		return JavaScriptDebugUIPlugin.getDefault().getPreferenceStore();
	}

	protected void createPrompt(Composite parent, Object data) {
		Font font = parent.getFont();

		Group group = new Group(parent, SWT.NONE);
		group.setLayoutData(data);
		group.setFont(font);
		group.setText("Prompt");

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

		// New command
		Label newPromptLabel = new Label(group, SWT.NONE);
		newPromptLabel.setFont(font);
		newPromptLabel.setText("New command:");

		newPrompt = new Text(group, SWT.BORDER);
		newPrompt.addModifyListener(new ModifyListener() {
			public void modifyText(ModifyEvent e) {
				validateValues();
			}
		});
		newPrompt.setLayoutData(new GridData(GridData.FILL, SWT.NONE, true,
				false));

		// Append command
		Label appendCommandLabel = new Label(group, SWT.NONE);
		appendCommandLabel.setFont(font);
		appendCommandLabel.setText("Append command:");

		appendPrompt = new Text(group, SWT.BORDER);
		appendPrompt.addModifyListener(new ModifyListener() {
			public void modifyText(ModifyEvent e) {
				validateValues();
			}
		});
		appendPrompt.setLayoutData(new GridData(GridData.FILL, SWT.NONE, true,
				false));
	}

	protected Control createContents(Composite parent) {
		Composite top = new Composite(parent, SWT.NONE);

		GridLayout layout = new GridLayout();
		layout.numColumns = 1;

		top.setLayout(layout);

		createPrompt(top, new GridData(GridData.FILL, SWT.NONE, true, false));

		initializeValues();
		validateValues();

		return top;
	}

	protected void initializeValues() {
		IPreferenceStore store = getPreferenceStore();

		newPrompt.setText(store.getString(JavaScriptConsoleConstants.PREF_NEW_PROMPT));

		appendPrompt.setText(store
				.getString(JavaScriptConsoleConstants.PREF_CONTINUE_PROMPT));
	}

	protected void validateValues() {
		if ("".equals(newPrompt.getText())) {
			setErrorMessage("Empty prompt");
			setValid(false);
		} else if ("".equals(appendPrompt.getText())) {
			setErrorMessage("Empty prompt");
			setValid(false);
		} else {
			setErrorMessage(null);
			setValid(true);
		}
	}

	public void init(IWorkbench workbench) {

	}

	protected void performDefaults() {
		newPrompt.setText("=>");
		appendPrompt.setText("->");
	}

	public boolean performOk() {
		IPreferenceStore store = getPreferenceStore();

		store
				.setValue(JavaScriptConsoleConstants.PREF_NEW_PROMPT, newPrompt
						.getText());
		store.setValue(JavaScriptConsoleConstants.PREF_CONTINUE_PROMPT, appendPrompt
				.getText());

		return true;
	}
}