Java tutorial
/******************************************************************************* * Copyright (c) 2012-2015 Codenvy, S.A. * 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: * Codenvy, S.A. - initial API and implementation *******************************************************************************/ package org.eclipse.che.ide.ext.svn.client.property; import com.google.common.base.Strings; import com.google.gwt.core.client.Scheduler; import com.google.gwt.event.dom.client.ClickEvent; import com.google.gwt.event.dom.client.ClickHandler; import com.google.gwt.event.dom.client.KeyCodes; import com.google.gwt.event.dom.client.KeyUpEvent; import com.google.gwt.event.dom.client.KeyUpHandler; import com.google.gwt.uibinder.client.UiBinder; import com.google.gwt.uibinder.client.UiField; import com.google.gwt.uibinder.client.UiHandler; import com.google.gwt.user.client.ui.Button; import com.google.gwt.user.client.ui.CheckBox; import com.google.gwt.user.client.ui.ListBox; import com.google.gwt.user.client.ui.RadioButton; import com.google.gwt.user.client.ui.SuggestBox; import com.google.gwt.user.client.ui.SuggestOracle; import com.google.gwt.user.client.ui.TextArea; import com.google.gwt.user.client.ui.Widget; import com.google.inject.Inject; import com.google.inject.Singleton; import org.eclipse.che.ide.ext.svn.client.SubversionExtensionLocalizationConstants; import org.eclipse.che.ide.ext.svn.client.SubversionExtensionResources; import org.eclipse.che.ide.ext.svn.shared.Depth; import org.eclipse.che.ide.ui.window.Window; import java.util.ArrayList; import java.util.Arrays; import java.util.List; /** * Implementation of {@link org.eclipse.che.ide.ext.svn.client.property.PropertyEditorView}. * * @author Vladyslav Zhukovskyi * @author Stephane Tournie */ @Singleton public class PropertyEditorViewImpl extends Window implements PropertyEditorView { interface PropertyEditorViewImplUiBinder extends UiBinder<Widget, PropertyEditorViewImpl> { } Button btnOk; Button btnCancel; @UiField(provided = true) SuggestBox propertyList; @UiField RadioButton editProperty; @UiField RadioButton deleteProperty; @UiField TextArea propertyValue; @UiField ListBox depth; @UiField CheckBox force; @UiField TextArea propertyCurrentValue; @UiField(provided = true) SubversionExtensionResources resources; @UiField(provided = true) SubversionExtensionLocalizationConstants constants; private PropertyEditorView.ActionDelegate delegate; private List<String> existingProperties; @Inject public PropertyEditorViewImpl(SubversionExtensionResources resources, SubversionExtensionLocalizationConstants constants, PropertyEditorViewImplUiBinder uiBinder) { this.resources = resources; this.constants = constants; this.ensureDebugId("svn-property-edit-window"); this.setTitle("Properties"); existingProperties = new ArrayList<String>(); btnCancel = createButton(constants.buttonCancel(), "svn-property-edit-cancel", new ClickHandler() { @Override public void onClick(ClickEvent event) { delegate.onCancelClicked(); } }); btnCancel.setTabIndex(6); getFooter().add(btnCancel); btnOk = createButton("Ok", "svn-property-edit-ok", new ClickHandler() { @Override public void onClick(ClickEvent event) { delegate.onOkClicked(); } }); btnOk.setTabIndex(5); getFooter().add(btnOk); final String[] props = new String[] { "svn:ignore", "svn:keywords", "svn:mime-type", "svn:mergeinfo" }; propertyList = new SuggestBox(new SuggestOracle() { @Override public void requestSuggestions(final Request request, Callback callback) { final List<Suggestion> suggestions = new ArrayList<>(); for (final String prop : props) { if (!prop.startsWith(request.getQuery())) { continue; } suggestions.add(new SuggestOracle.Suggestion() { /** {@inheritDoc} */ @Override public String getDisplayString() { return prop; } /** {@inheritDoc} */ @Override public String getReplacementString() { return prop; } }); } callback.onSuggestionsReady(request, new Response(suggestions)); } }); propertyList.getValueBox().addKeyUpHandler(new KeyUpHandler() { /** {@inheritDoc} */ @Override public void onKeyUp(KeyUpEvent event) { String propertyListValue = propertyList.getValue(); int keyCode = event.getNativeKeyCode(); if (keyCode >= KeyCodes.KEY_A && keyCode <= KeyCodes.KEY_Z || keyCode >= KeyCodes.KEY_ZERO && keyCode <= KeyCodes.KEY_NINE || keyCode >= KeyCodes.KEY_NUM_ZERO && keyCode <= KeyCodes.KEY_NUM_NINE || keyCode == KeyCodes.KEY_ENTER || keyCode == KeyCodes.KEY_BACKSPACE) { setPropertyCurrentValue(Arrays.asList("")); if (!Strings.isNullOrEmpty(propertyListValue) && existingProperties.contains(propertyListValue)) { btnOk.setEnabled(editProperty.getValue() && !Strings.isNullOrEmpty(propertyValue.getText()) || deleteProperty.getValue()); delegate.onPropertyNameChanged(propertyListValue); } } } }); this.setWidget(uiBinder.createAndBindUi(this)); for (Depth depth : Depth.values()) { this.depth.addItem(depth.getDescription(), depth.getValue()); } propertyCurrentValue.setReadOnly(true); propertyCurrentValue.getElement().setAttribute("placeHolder", "(current value of property)"); propertyCurrentValue.getElement().setAttribute("resize", "none"); } /** {@inheritDoc} */ @Override public void setDelegate(ActionDelegate delegate) { this.delegate = delegate; } /** {@inheritDoc} */ @Override public void onClose() { hide(); propertyList.setEnabled(false); } /** {@inheritDoc} */ @Override public void onShow() { propertyCurrentValue.setText(null); editProperty.setValue(true); propertyValue.setEnabled(true); propertyValue.setText(null); deleteProperty.setValue(false); propertyList.setEnabled(true); btnOk.setEnabled(false); force.setValue(false); depth.setSelectedIndex(0); delegate.obtainExistingPropertiesForPath(); Scheduler.get().scheduleDeferred(new Scheduler.ScheduledCommand() { @Override public void execute() { String defaultPropertyListValue = "svn:ignore"; propertyList.getValueBox().setValue(defaultPropertyListValue); propertyList.setFocus(true); delegate.onPropertyNameChanged(defaultPropertyListValue); } }); show(); } /** {@inheritDoc} */ @Override public String getSelectedProperty() { return propertyList.getValue(); } /** {@inheritDoc} */ @Override public Depth getDepth() { return Depth.from(depth.getSelectedValue()); } /** {@inheritDoc} */ @Override public String getPropertyValue() { return propertyValue.getText(); } /** {@inheritDoc} */ @Override public boolean isEditPropertySelected() { return editProperty.getValue(); } /** {@inheritDoc} */ @Override public boolean isDeletePropertySelected() { return deleteProperty.getValue(); } /** {@inheritDoc} */ @Override public boolean isForceSelected() { return force.getValue(); } @UiHandler({ "editProperty", "deleteProperty" }) @SuppressWarnings("unused") public void onModeChanged(ClickEvent event) { if (editProperty.getValue()) { propertyValue.setEnabled(true); btnOk.setEnabled(!Strings.isNullOrEmpty(propertyList.getValue()) && !Strings.isNullOrEmpty(propertyValue.getText())); } else if (deleteProperty.getValue()) { propertyValue.setEnabled(false); btnOk.setEnabled(!Strings.isNullOrEmpty(propertyList.getValue())); } } @UiHandler("propertyValue") public void onPropertyValueChanged(KeyUpEvent event) { btnOk.setEnabled( !Strings.isNullOrEmpty(propertyList.getValue()) && !Strings.isNullOrEmpty(propertyValue.getText())); } @Override public void setPropertyCurrentValue(List<String> values) { String text = ""; for (String value : values) { if (value != null && value.length() > 0) { text += value + "\n"; } } propertyCurrentValue.setText(text); } @Override public void setExistingPropertiesForPath(List<String> properties) { existingProperties.clear(); for (String property : properties) { existingProperties.add(property); } } }