Java tutorial
/** * Copyright 2011 Steve Good [steve@stevegood.org] * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ /** * */ package com.muratools.eclipse.wizard.newTheme; import java.io.File; import java.io.IOException; import java.net.URISyntaxException; import java.net.URL; import java.util.ArrayList; import nu.xom.Attribute; import nu.xom.Builder; import nu.xom.Document; import nu.xom.Element; import nu.xom.Elements; import nu.xom.ParsingException; import org.eclipse.core.runtime.FileLocator; import org.eclipse.core.runtime.Platform; import org.eclipse.jface.viewers.ISelection; import org.eclipse.jface.wizard.WizardPage; import org.eclipse.swt.SWT; import org.eclipse.swt.widgets.Button; import org.eclipse.swt.widgets.Combo; import org.eclipse.swt.widgets.Composite; import org.eclipse.swt.layout.GridData; import org.eclipse.swt.layout.GridLayout; import org.osgi.framework.Bundle; import com.muratools.eclipse.MuraTheme; import org.eclipse.swt.widgets.Label; import org.eclipse.swt.widgets.Text; import org.eclipse.swt.events.ModifyEvent; import org.eclipse.swt.events.ModifyListener; import org.eclipse.swt.events.SelectionAdapter; import org.eclipse.swt.events.SelectionEvent; import org.eclipse.core.databinding.DataBindingContext; import org.eclipse.core.databinding.observable.value.IObservableValue; import org.eclipse.jface.databinding.swt.SWTObservables; /** * @author steve * */ public class NewThemePage extends WizardPage { private DataBindingContext m_bindingContext; private Combo themeSelect; private ArrayList<MuraTheme> themes; private Text themeNameText; private Button btnUseExistingTheme; /** * @param selection */ public NewThemePage(ISelection selection) { super("New Mura CMS Theme"); setTitle("New Mura CMS Theme"); setDescription("Generate a new blank theme or use a prebuilt theme as a starting point."); } /* (non-Javadoc) * @see org.eclipse.jface.dialogs.IDialogPage#createControl(org.eclipse.swt.widgets.Composite) */ public void createControl(Composite parent) { themes = loadThemes(); Composite composite = new Composite(parent, SWT.NULL); GridLayout layout = new GridLayout(); layout.numColumns = 3; composite.setLayout(layout); layout.verticalSpacing = 9; setControl(composite); Label lblThemeName = new Label(composite, SWT.NONE); lblThemeName.setToolTipText( "Theme name. Spaces will be replaced with underscores and special characters will be removed."); lblThemeName.setLayoutData(new GridData(SWT.RIGHT, SWT.CENTER, false, false, 1, 1)); lblThemeName.setAlignment(SWT.RIGHT); lblThemeName.setText("Theme Name"); themeNameText = new Text(composite, SWT.BORDER); themeNameText.setToolTipText( "Theme name. Spaces will be replaced with underscores and special characters will be removed."); themeNameText.setLayoutData(new GridData(SWT.FILL, SWT.CENTER, true, false, 2, 1)); themeNameText.addModifyListener(new ModifyListener() { public void modifyText(ModifyEvent e) { checkFields(); } }); themeNameText.setFocus(); themeNameText.selectAll(); Button btnRadioButton = new Button(composite, SWT.RADIO); btnRadioButton.setLayoutData(new GridData(SWT.LEFT, SWT.CENTER, false, false, 2, 1)); btnRadioButton.setSelection(true); btnRadioButton.addSelectionListener(new SelectionAdapter() { @Override public void widgetSelected(SelectionEvent e) { themeSelect.deselectAll(); checkFields(); } }); btnRadioButton.setText("Empty Theme Scaffold"); new Label(composite, SWT.NONE); btnUseExistingTheme = new Button(composite, SWT.RADIO); btnUseExistingTheme.setLayoutData(new GridData(SWT.LEFT, SWT.CENTER, false, false, 2, 1)); btnUseExistingTheme.setText("Use Existing Theme"); btnUseExistingTheme.addSelectionListener(new SelectionAdapter() { @Override public void widgetSelected(SelectionEvent e) { checkFields(); } }); new Label(composite, SWT.NONE); new Label(composite, SWT.NONE); Label lblNewLabel = new Label(composite, SWT.NONE); lblNewLabel.setEnabled(false); lblNewLabel.setAlignment(SWT.RIGHT); lblNewLabel.setLayoutData(new GridData(SWT.RIGHT, SWT.CENTER, false, false, 1, 1)); lblNewLabel.setText("Select base theme"); themeSelect = new Combo(composite, SWT.DROP_DOWN | SWT.READ_ONLY); themeSelect.setEnabled(false); GridData gd_themeSelect = new GridData(SWT.FILL, SWT.CENTER, false, false, 1, 1); gd_themeSelect.widthHint = 465; themeSelect.setLayoutData(gd_themeSelect); for (int i = 0; i < themes.size(); i++) { MuraTheme theme = themes.get(i); themeSelect.add(theme.getName()); } themeSelect.addModifyListener(new ModifyListener() { public void modifyText(ModifyEvent e) { checkFields(); } }); m_bindingContext = initDataBindings(); checkFields(); } private ArrayList<MuraTheme> loadThemes() { ArrayList<MuraTheme> themes = new ArrayList<MuraTheme>(); Bundle bundle = Platform.getBundle("com.muratools.eclipse"); File themeXML = null; URL fileURL = bundle.getEntry("static/MuraThemes.xml"); ; try { themeXML = new File(FileLocator.resolve(fileURL).toURI()); } catch (URISyntaxException e1) { e1.printStackTrace(); } catch (IOException e1) { e1.printStackTrace(); } Builder parser = new Builder(); Document doc = null; try { doc = parser.build(themeXML); } catch (ParsingException e) { e.printStackTrace(); } catch (IOException e) { e.printStackTrace(); } if (doc != null) { Element root = doc.getRootElement(); Elements themeElements = root.getChildElements("theme"); for (int i = 0; i < themeElements.size(); i++) { Element themeElement = themeElements.get(i); Attribute name = themeElement.getAttribute("name"); Attribute fileName = themeElement.getAttribute("fileName"); Attribute url = themeElement.getAttribute("url"); MuraTheme theme = new MuraTheme(name.getValue(), url.getValue(), fileName.getValue()); themes.add(theme); } } return themes; } public MuraTheme getSelectedMuraTheme() { int selectedIndex = themeSelect.getSelectionIndex(); if (selectedIndex < 0) { return null; } return themes.get(selectedIndex); } public String getThemeName() { return themeNameText.getText().replaceAll("[^a-zA-Z0-9\\s]", "").replaceAll(" ", "_") .replaceAll("[_]+", "_").replaceAll("[_]$", ""); } public boolean useExistingTheme() { return btnUseExistingTheme.getSelection(); } private void checkFields() { boolean canComplete = false; if (getThemeName().length() > 0) { canComplete = true; if (btnUseExistingTheme.getSelection()) { if (getSelectedMuraTheme() != null) { canComplete = true; } else { canComplete = false; } } else { canComplete = true; } } setPageComplete(canComplete); } protected DataBindingContext initDataBindings() { DataBindingContext bindingContext = new DataBindingContext(); // IObservableValue themeSelectObserveEnabledObserveWidget = SWTObservables.observeEnabled(themeSelect); IObservableValue btnUseExistingThemeObserveSelectionObserveWidget = SWTObservables .observeSelection(btnUseExistingTheme); bindingContext.bindValue(themeSelectObserveEnabledObserveWidget, btnUseExistingThemeObserveSelectionObserveWidget, null, null); // return bindingContext; } }