Java tutorial
package org.drools.guvnor.client.ruleeditor; /* * 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. */ import java.util.Date; import org.drools.guvnor.client.common.FormStylePopup; import org.drools.guvnor.client.common.GenericCallback; import org.drools.guvnor.client.common.ImageButton; import org.drools.guvnor.client.common.PrettyFormLayout; import org.drools.guvnor.client.common.RulePackageSelector; import org.drools.guvnor.client.explorer.ExplorerLayoutManager; import org.drools.guvnor.client.rpc.MetaData; import org.drools.guvnor.client.rpc.RepositoryServiceFactory; import org.drools.guvnor.client.security.Capabilities; import com.google.gwt.user.client.Command; import com.google.gwt.user.client.Window; import com.google.gwt.user.client.ui.Button; import com.google.gwt.user.client.ui.ChangeListener; import com.google.gwt.user.client.ui.CheckBox; import com.google.gwt.user.client.ui.ClickListener; import com.google.gwt.user.client.ui.HTML; import com.google.gwt.user.client.ui.HorizontalPanel; import com.google.gwt.user.client.ui.Image; import com.google.gwt.user.client.ui.Label; import com.google.gwt.user.client.ui.TextBox; import com.google.gwt.user.client.ui.Widget; /** * This displays the metadata for a versionable asset. * It also captures edits, but it does not load or save anything itself. * @author Michael Neale */ public class MetaDataWidget extends PrettyFormLayout { private MetaData data; private boolean readOnly; private String uuid; private Command refreshView; AssetCategoryEditor ed; public MetaDataWidget(final MetaData d, boolean readOnly, String uuid, Command refreshView) { super(); // layout = new Form(new FormConfig() { // { // setWidth(250); // //setHeader(d.name); // setLabelWidth(75); // setSurroundWithBox(true); // } // }); if (!readOnly) { Image edit = new ImageButton("images/edit.gif", "Rename this asset"); edit.addClickListener(new ClickListener() { public void onClick(Widget w) { showRenameAsset(w); } }); addHeader("images/meta_data.png", d.name, edit); } else { addHeader("images/asset_version.png", d.name, null); } this.uuid = uuid; this.data = d; this.readOnly = readOnly; this.refreshView = refreshView; //setWidth("20%"); loadData(d); } private void loadData(MetaData d) { this.data = d; startSection(); addAttribute("Categories:", categories()); endSection(); startSection(); addAttribute("Modified on:", readOnlyDate(data.lastModifiedDate)); addAttribute("by:", readOnlyText(data.lastContributor)); addAttribute("Note:", readOnlyText(data.checkinComment)); addAttribute("Version:", getVersionNumberLabel()); if (!readOnly) { addAttribute("Created on:", readOnlyDate(data.createdDate)); } addAttribute("Created by:", readOnlyText(data.creator)); addAttribute("Format:", new HTML("<b>" + data.format + "</b>")); endSection(); startSection(); addAttribute("Package:", packageEditor(data.packageName)); /******************************/ addAttribute("Disabled:", editableBoolean(new FieldBooleanBinding() { public boolean getValue() { return data.disabled; } public void setValue(boolean val) { data.disabled = val; } }, "Disables this asset.")); /******************************/ addAttribute("Subject:", editableText(new FieldBinding() { public String getValue() { return data.subject; } public void setValue(String val) { data.subject = val; } }, "A short description of the subject matter.")); addAttribute("Type:", editableText(new FieldBinding() { public String getValue() { return data.type; } public void setValue(String val) { data.type = val; } }, "This is for classification purposes.")); addAttribute("External link:", editableText(new FieldBinding() { public String getValue() { return data.externalRelation; } public void setValue(String val) { data.externalRelation = val; } }, "This is for relating the asset to an external system.")); addAttribute("Source:", editableText(new FieldBinding() { public String getValue() { return data.externalSource; } public void setValue(String val) { data.externalSource = val; } }, "A short description or code indicating the source of the rule.")); endSection(); startSection(); if (!readOnly) { addRow(new VersionBrowser(this.uuid, this.data, refreshView)); } endSection(); } private Widget packageEditor(final String packageName) { if (this.readOnly || !ExplorerLayoutManager.shouldShow(Capabilities.SHOW_PACKAGE_VIEW)) { return readOnlyText(packageName); } else { HorizontalPanel horiz = new HorizontalPanel(); horiz.setStyleName("metadata-Widget"); horiz.add(readOnlyText(packageName)); Image editPackage = new ImageButton("images/edit.gif"); editPackage.addClickListener(new ClickListener() { public void onClick(Widget w) { showEditPackage(packageName, w); } }); horiz.add(editPackage); return horiz; } } private void showRenameAsset(Widget source) { final FormStylePopup pop = new FormStylePopup("images/package_large.png", "Rename this item"); final TextBox box = new TextBox(); pop.addAttribute("New name", box); Button ok = new Button("Rename item"); pop.addAttribute("", ok); ok.addClickListener(new ClickListener() { public void onClick(Widget w) { RepositoryServiceFactory.getService().renameAsset(uuid, box.getText(), new GenericCallback() { public void onSuccess(Object data) { refreshView.execute(); Window.alert("Item has been renamed"); pop.hide(); } }); } }); pop.show(); } private void showEditPackage(final String pkg, Widget source) { final FormStylePopup pop = new FormStylePopup("images/package_large.png", "Move this item to another package"); pop.addAttribute("Current package:", new Label(pkg)); final RulePackageSelector sel = new RulePackageSelector(); pop.addAttribute("New package:", sel); Button ok = new Button("Change package"); pop.addAttribute("", ok); ok.addClickListener(new ClickListener() { public void onClick(Widget w) { if (sel.getSelectedPackage().equals(pkg)) { Window.alert("You need to pick a different package to move this to."); return; } RepositoryServiceFactory.getService().changeAssetPackage(uuid, sel.getSelectedPackage(), "Moved from : " + pkg, new GenericCallback() { public void onSuccess(Object data) { refreshView.execute(); pop.hide(); } }); } }); pop.show(); } private Widget getVersionNumberLabel() { if (data.versionNumber == 0) { return new HTML("<i>Not checked in yet</i>"); } else { return readOnlyText(Long.toString(data.versionNumber)); } } private Widget readOnlyDate(Date lastModifiedDate) { if (lastModifiedDate == null) { return null; } else { return new Label(lastModifiedDate.toLocaleString()); } } private Label readOnlyText(String text) { Label lbl = new Label(text); lbl.setWidth("100%"); return lbl; } private Widget categories() { ed = new AssetCategoryEditor(this.data, this.readOnly); return ed; } /** This binds a field, and returns a text editor for it */ private Widget editableText(final FieldBinding bind, String toolTip) { if (!readOnly) { final TextBox box = new TextBox(); box.setTitle(toolTip); box.setText(bind.getValue()); box.setVisibleLength(10); ChangeListener listener = new ChangeListener() { public void onChange(Widget w) { bind.setValue(box.getText()); } }; box.addChangeListener(listener); return box; } else { return new Label(bind.getValue()); } } /** * 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.setChecked(bind.getValue()); ClickListener listener = new ClickListener() { public void onClick(Widget w) { boolean b = box.isChecked(); bind.setValue(b); } }; box.addClickListener(listener); return box; } else { final CheckBox box = new CheckBox(); box.setChecked(bind.getValue()); box.setEnabled(false); return box; } } /** 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 MetaData getData() { return data; } }