Java tutorial
/* * Copyright 2005 JBoss Inc * * 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 org.drools.guvnor.client.widgets; import com.google.gwt.core.client.GWT; import com.google.gwt.event.dom.client.ChangeEvent; import com.google.gwt.event.dom.client.ChangeHandler; import com.google.gwt.event.dom.client.ClickEvent; import com.google.gwt.event.dom.client.ClickHandler; import com.google.gwt.event.shared.EventBus; import com.google.gwt.i18n.client.DateTimeFormat; import com.google.gwt.resources.client.ImageResource; import com.google.gwt.user.client.Window; import com.google.gwt.user.client.ui.*; import org.drools.guvnor.client.asseteditor.RefreshAssetEditorEvent; import org.drools.guvnor.client.common.*; import org.drools.guvnor.client.configurations.Capability; import org.drools.guvnor.client.configurations.UserCapabilities; import org.drools.guvnor.client.explorer.AssetEditorPlace; import org.drools.guvnor.client.explorer.ClientFactory; import org.drools.guvnor.client.explorer.navigation.ClosePlaceEvent; import org.drools.guvnor.client.messages.ConstantsCore; import org.drools.guvnor.client.resources.GuvnorImages; import org.drools.guvnor.client.resources.ImagesCore; import org.drools.guvnor.client.rpc.*; import org.drools.guvnor.client.util.DecoratedDisclosurePanel; import java.util.Date; /** * This displays the metadata for a versionable artifact. It also captures * edits, but it does not load or save anything itself. */ public class MetaDataWidget extends Composite { private ConstantsCore constants = GWT.create(ConstantsCore.class); private static ImagesCore images = GWT.create(ImagesCore.class); private final Artifact artifact; private final boolean readOnly; private final String uuid; private VerticalPanel layout = new VerticalPanel(); AssetCategoryEditor ed; private FormStyleLayout currentSection; private String currentSectionName; private final ClientFactory clientFactory; private final EventBus eventBus; public MetaDataWidget(ClientFactory clientFactory, EventBus eventBus, final Artifact artifact, boolean readOnly, final String uuid) { super(); this.clientFactory = clientFactory; this.eventBus = eventBus; this.uuid = uuid; this.artifact = artifact; this.readOnly = readOnly; layout.setWidth("100%"); initWidget(layout); render(); } private void render() { layout.clear(); //layout.add( new SmallLabel( constants.Title() + ": [<b>" + data.name + "</b>]" ) ); startSection(constants.Metadata()); addHeader(images.assetVersion(), artifact.getName(), null); loadData(); } private void addHeader(ImageResource img, String name, Image edit) { HorizontalPanel hp = new HorizontalPanel(); hp.add(new SmallLabel("<b>" + name + "</b>")); if (edit != null) hp.add(edit); currentSection.addAttribute(constants.Title(), hp); } private void loadData() { if (artifact instanceof Asset) { addAttribute(constants.CategoriesMetaData(), categories()); } addAttribute(constants.LastModified(), readOnlyDate(artifact.getLastModified())); addAttribute(constants.ModifiedByMetaData(), readOnlyText(artifact.getLastContributor())); addAttribute(constants.NoteMetaData(), readOnlyText(artifact.getCheckinComment())); if (!readOnly) { addAttribute(constants.CreatedOnMetaData(), readOnlyDate(artifact.getDateCreated())); } if (artifact instanceof Asset) { addAttribute(constants.CreatedByMetaData(), readOnlyText(((Asset) artifact).getMetaData().getCreator())); addAttribute(constants.PackageMetaData(), packageEditor(((Asset) artifact).getMetaData().getModuleName())); addAttribute(constants.IsDisabledMetaData(), editableBoolean(new FieldBooleanBinding() { public boolean getValue() { return ((Asset) artifact).getMetaData().isDisabled(); } public void setValue(boolean val) { ((Asset) artifact).getMetaData().setDisabled(val); } }, constants.DisableTip())); } addAttribute(constants.FormatMetaData(), readOnlyText(artifact.getFormat())); addAttribute("UUID:", readOnlyText(uuid)); endSection(false); if (artifact instanceof Asset) { final MetaData data = ((Asset) artifact).getMetaData(); startSection(constants.OtherMetaData()); addAttribute(constants.SubjectMetaData(), editableText(new FieldBinding() { public String getValue() { return data.subject; } public void setValue(String val) { data.subject = val; } }, constants.AShortDescriptionOfTheSubjectMatter())); addAttribute(constants.TypeMetaData(), editableText(new FieldBinding() { public String getValue() { return data.type; } public void setValue(String val) { data.type = val; } }, constants.TypeTip())); addAttribute(constants.ExternalLinkMetaData(), editableText(new FieldBinding() { public String getValue() { return data.externalRelation; } public void setValue(String val) { data.externalRelation = val; } }, constants.ExternalLinkTip())); addAttribute(constants.SourceMetaData(), editableText(new FieldBinding() { public String getValue() { return data.externalSource; } public void setValue(String val) { data.externalSource = val; } }, constants.SourceMetaDataTip())); endSection(true); } startSection(constants.VersionHistory()); Image image = GuvnorImages.INSTANCE.Feed(); image.addClickHandler(new ClickHandler() { public void onClick(ClickEvent arg0) { Window.open(getVersionFeed(artifact), "_blank", null); } }); addAttribute(constants.VersionFeed(), image); addAttribute(constants.CurrentVersionNumber(), getVersionNumberLabel()); if (!readOnly) { addRow(new VersionBrowser(clientFactory, eventBus, this.uuid, !(artifact instanceof Asset))); } endSection(true); } private void addRow(Widget widget) { this.currentSection.addRow(widget); } private void addAttribute(String string, Widget widget) { this.currentSection.addAttribute(string, widget); } private void endSection(boolean collapsed) { DecoratedDisclosurePanel advancedDisclosure = new DecoratedDisclosurePanel(currentSectionName); advancedDisclosure.setWidth("100%"); advancedDisclosure.setOpen(!collapsed); advancedDisclosure.setContent(this.currentSection); layout.add(advancedDisclosure); } private void startSection(String name) { currentSection = new FormStyleLayout(); currentSectionName = name; } private Widget packageEditor(final String packageName) { if (this.readOnly || !UserCapabilities.INSTANCE.hasCapability(Capability.SHOW_KNOWLEDGE_BASES_VIEW)) { return readOnlyText(packageName); } else { HorizontalPanel horiz = new HorizontalPanel(); horiz.setStyleName("metadata-Widget"); //NON-NLS horiz.add(readOnlyText(packageName)); Image editPackage = GuvnorImages.INSTANCE.Edit(); editPackage.addClickHandler(new ClickHandler() { public void onClick(ClickEvent w) { showEditPackage(packageName, w); } }); horiz.add(editPackage); return horiz; } } private void showEditPackage(final String pkg, ClickEvent source) { Image image = new Image(images.packageLarge()); image.setAltText(ConstantsCore.INSTANCE.Package()); final FormStylePopup pop = new FormStylePopup(image, constants.MoveThisItemToAnotherPackage()); pop.addAttribute(constants.CurrentPackage(), new Label(pkg)); final RulePackageSelector sel = new RulePackageSelector(); pop.addAttribute(constants.NewPackage(), sel); Button ok = new Button(constants.ChangePackage()); pop.addAttribute("", ok); ok.addClickHandler(new ClickHandler() { public void onClick(ClickEvent w) { if (sel.getSelectedPackage().equals(pkg)) { Window.alert(constants.YouNeedToPickADifferentPackageToMoveThisTo()); return; } AssetServiceAsync assetService = GWT.create(AssetService.class); assetService.changeAssetPackage(uuid, sel.getSelectedPackage(), constants.MovedFromPackage(pkg), new GenericCallback<java.lang.Void>() { public void onSuccess(Void v) { eventBus.fireEvent(new RefreshAssetEditorEvent(sel.getSelectedPackage(), uuid)); pop.hide(); } }); } }); pop.show(); } private void close() { eventBus.fireEvent(new ClosePlaceEvent(new AssetEditorPlace(uuid))); } private Widget getVersionNumberLabel() { if (artifact.getVersionNumber() == 0) { return new SmallLabel(constants.NotCheckedInYet()); } else { return readOnlyText(Long.toString(artifact.getVersionNumber())); } } private Widget readOnlyDate(Date lastModifiedDate) { if (lastModifiedDate == null) { return null; } else { return new SmallLabel(DateTimeFormat.getFormat(DateTimeFormat.PredefinedFormat.DATE_TIME_SHORT) .format(lastModifiedDate)); } } private Label readOnlyText(String text) { SmallLabel lbl = new SmallLabel(text); lbl.setWidth("100%"); return lbl; } private Widget categories() { ed = new AssetCategoryEditor(((Asset) this.artifact).getMetaData(), this.readOnly); return ed; } /** * This binds a field, and returns a check box editor for it. * @param bind Interface to bind to. * @param toolTip tool tip. * @return */ private Widget editableBoolean(final FieldBooleanBinding bind, String toolTip) { if (!readOnly) { final CheckBox box = new CheckBox(); box.setTitle(toolTip); box.setValue(bind.getValue()); ClickHandler listener = new ClickHandler() { public void onClick(ClickEvent w) { boolean b = box.getValue(); bind.setValue(b); } }; box.addClickHandler(listener); return box; } else { final CheckBox box = new CheckBox(); box.setValue(bind.getValue()); box.setEnabled(false); return box; } } /** * This binds a field, and returns a TextBox editor for it. * * @param bind Interface to bind to. * @param toolTip tool tip. * @return */ private Widget editableText(final FieldBinding bind, String toolTip) { if (!readOnly) { final TextBox tbox = new TextBox(); tbox.setTitle(toolTip); tbox.setText(bind.getValue()); tbox.setVisibleLength(10); ChangeHandler listener = new ChangeHandler() { public void onChange(ChangeEvent event) { String txt = tbox.getText(); bind.setValue(txt); } }; tbox.addChangeHandler(listener); return tbox; } else { return new Label(bind.getValue()); } } /** * used to bind fields in the meta data DTO to the form */ static interface FieldBinding { void setValue(String val); String getValue(); } /** * used to bind fields in the meta data DTO to the form */ static interface FieldBooleanBinding { void setValue(boolean val); boolean getValue(); } /** * Return the data if it is to be saved. */ public Artifact getData() { return artifact; } public void refresh() { render(); } static String getVersionFeed(Artifact artifact) { if (artifact instanceof Module) { return getRESTBaseURL() + "packages/" + artifact.getName() + "/versions"; } else { return getRESTBaseURL() + "packages/" + ((Asset) artifact).getMetaData().getModuleName() + "/assets/" + artifact.getName() + "/versions"; } } static String getRESTBaseURL() { String url = GWT.getModuleBaseURL(); return url.replaceFirst("org.drools.guvnor.Guvnor", "rest"); } }