Java tutorial
/* * Copyright (C) 2012 The Android Open Source Project * * 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.eclipse.andmore.android.generateviewbylayout.ui; import java.util.ArrayList; import java.util.HashMap; import java.util.List; import java.util.Map; import org.eclipse.andmore.android.codeutils.CodeUtilsActivator; import org.eclipse.andmore.android.codeutils.i18n.CodeUtilsNLS; import org.eclipse.andmore.android.generateviewbylayout.codegenerators.SaveStateCodeGenerator; import org.eclipse.andmore.android.generateviewbylayout.model.LayoutNode; import org.eclipse.jface.dialogs.IMessageProvider; import org.eclipse.jface.viewers.ColumnLabelProvider; import org.eclipse.jface.viewers.TableViewer; import org.eclipse.jface.viewers.TableViewerColumn; import org.eclipse.osgi.util.NLS; import org.eclipse.swt.SWT; import org.eclipse.swt.custom.TableEditor; import org.eclipse.swt.events.ControlAdapter; import org.eclipse.swt.events.ControlEvent; import org.eclipse.swt.events.DisposeEvent; import org.eclipse.swt.events.DisposeListener; import org.eclipse.swt.events.SelectionAdapter; import org.eclipse.swt.events.SelectionEvent; import org.eclipse.swt.events.SelectionListener; import org.eclipse.swt.layout.GridData; import org.eclipse.swt.widgets.Button; import org.eclipse.swt.widgets.Composite; import org.eclipse.swt.widgets.Label; import org.eclipse.swt.widgets.Shell; import org.eclipse.swt.widgets.TableItem; /** * GUI to enable selection of which Android items will be inserted into activity * or fragment */ public class ChooseLayoutItemsDialog extends AbstractLayoutItemsDialog { private final String DIALOG_HELP = CodeUtilsActivator.PLUGIN_ID + ".generate-code-from-layout-dialog"; //$NON-NLS-1$ private Button generateListeners; private boolean hasGuiItemsWithoutId = false; private final Map<TableItem, TableEditor> itemToEditorMap; private static final String WIZARD_IMAGE_PATH = "icons/wizban/fill_activity_ban.png"; //$NON-NLS-1$ public ChooseLayoutItemsDialog(Shell parentShell) { super(parentShell, CodeUtilsNLS.ChooseLayoutItemsDialog_DefaultMessage, CodeUtilsNLS.UI_ChooseLayoutItemsDialog_Dialog_Title, CodeUtilsNLS.ChooseLayoutItemsDialog_FillActivityBasedOnLayout, CodeUtilsActivator.getImageDescriptor(WIZARD_IMAGE_PATH).createImage()); setHelpID(DIALOG_HELP); itemToEditorMap = new HashMap<TableItem, TableEditor>(); } @Override protected void createCustomContentArea(Composite parent) { Label separator = new Label(parent, SWT.SEPARATOR | SWT.HORIZONTAL); separator.setLayoutData(new GridData(SWT.FILL, SWT.BOTTOM, true, false, 2, 1)); createCheckboxArea(parent); } @Override protected void createColumns(TableViewer viewer) { super.createColumns(viewer); TableViewerColumn column = createTableViewerColumn(viewer, CodeUtilsNLS.ChooseLayoutItemsDialog_SaveState, 80, 3); column.setLabelProvider(new ColumnLabelProvider() { @Override public String getText(Object element) { return null; } }); column.getColumn().setToolTipText(CodeUtilsNLS.ChooseLayoutItemsDialog_SaveStateTooltip); } @Override protected void populateViewer() { super.populateViewer(); populateSaveStateColumn(); } private void populateSaveStateColumn() { if (getViewer() != null) { itemToEditorMap.clear(); for (final TableItem item : getViewer().getTable().getItems()) { LayoutNode node = (LayoutNode) item.getData(); if (SaveStateCodeGenerator.canGenerateSaveStateCode(node)) { final TableEditor editor = new TableEditor(getViewer().getTable()); editor.setColumn(3); editor.horizontalAlignment = SWT.CENTER; editor.grabHorizontal = false; editor.minimumWidth = getViewer().getTable().getColumn(3).getWidth() < 20 ? getViewer().getTable().getColumn(3).getWidth() : 20; getViewer().getTable().getColumn(3).addControlListener(new ControlAdapter() { @Override public void controlResized(ControlEvent e) { editor.minimumWidth = getViewer().getTable().getColumn(3).getWidth() < 20 ? getViewer().getTable().getColumn(3).getWidth() : 20; } }); final Button checkbox = new Button(getViewer().getTable(), SWT.CHECK); checkbox.setEnabled(false); checkbox.pack(); final SelectionListener listener = new SelectionAdapter() { @Override public void widgetSelected(SelectionEvent e) { if ((e.detail & SWT.CHECK) != 0) { if ((e.item instanceof TableItem) && (editor.getItem() == e.item)) { checkbox.setEnabled(((TableItem) e.item).getChecked()); } } } }; checkbox.setSelection(node.getSaveState()); getViewer().getTable().addSelectionListener(listener); checkbox.addSelectionListener(new SelectionAdapter() { @Override public void widgetSelected(SelectionEvent e) { LayoutNode node = (LayoutNode) editor.getItem().getData(); node.setSaveState(checkbox.getSelection()); } }); editor.setEditor(checkbox, item, 3); item.addDisposeListener(new DisposeListener() { @Override public void widgetDisposed(DisposeEvent e) { getViewer().getTable().removeSelectionListener(listener); editor.getEditor().dispose(); editor.dispose(); } }); itemToEditorMap.put(item, editor); } } } } @Override protected void itemCheckStateChanged(TableItem item) { super.itemCheckStateChanged(item); if (itemToEditorMap.get(item) != null) { ((Button) itemToEditorMap.get(item).getEditor()).setEnabled(item.getChecked()); } } @Override protected List<LayoutNode> getGuiItemsList() { List<LayoutNode> completeGuiItemsList = getCodeGeneratorData().getGUIItemsForUI(); List<LayoutNode> processedGuiItemsList = new ArrayList<LayoutNode>(); hasGuiItemsWithoutId = false; for (LayoutNode guiItem : completeGuiItemsList) { if ((guiItem.getNodeId() != null) && (guiItem.getNodeId().length() > 0)) { processedGuiItemsList.add(guiItem); } else { hasGuiItemsWithoutId = true; } } return processedGuiItemsList; } /* * (non-Javadoc) * * @see * org.eclipse.jface.window.Window#configureShell(org.eclipse.swt.widgets * .Shell) */ @Override protected void configureShell(Shell newShell) { newShell.setSize(640, 480); super.configureShell(newShell); } /** * Creates GUI items for choosing whether code for listeners should be * auto-generated. * * @param optionsComposite */ private void createCheckboxArea(Composite parent) { generateListeners = new Button(parent, SWT.CHECK); generateListeners.setText(CodeUtilsNLS.ChooseLayoutItemsDialog_GenerateDefaultListeners); generateListeners.setSelection(true); generateListeners.setLayoutData(new GridData(SWT.LEFT, SWT.BOTTOM, false, false, 2, 1)); } /** * Handles the enablement of the Ok button. It will only be enabled when at * least one table item is checked. */ @Override protected void validate() { super.validate(); if ((getViewer() != null) && (getErrorMessage() == null)) { // set the appropriate message String message = ""; //$NON-NLS-1$ int messageType = IMessageProvider.NONE; // check if at least one table item was selected for (TableItem item : getViewer().getTable().getItems()) { LayoutNode node = (LayoutNode) item.getData(); if (item.getChecked() && (getCodeGeneratorData() != null) && getCodeGeneratorData() .getJavaLayoutData().getVisitor().checkIfAttributeAlreadyDeclared(node, true)) { message = NLS.bind(CodeUtilsNLS.ChooseLayoutItemsDialog_VariableNameInUse_Error, node.getNodeId()); messageType = IMessageProvider.ERROR; break; } } if (messageType == IMessageProvider.NONE) { if (getViewer().getTable().getItemCount() == 0) { message = CodeUtilsNLS.UI_ChooseLayoutItemsDialog_No_Gui_Items_Available; messageType = IMessageProvider.INFORMATION; } else if (hasGuiItemsWithoutId) { message = CodeUtilsNLS.ChooseLayoutItemsDialog_Gui_Items_Available_No_Id; messageType = IMessageProvider.INFORMATION; } else { message = CodeUtilsNLS.ChooseLayoutItemsDialog_DefaultMessage; } } this.setMessage(message, messageType); } } /** * Each table item refers to a LayoutNode object. When user press Ok, the * insertCode status of these objects are set accordingly to table * selections. */ @Override protected void okPressed() { // set the insertCode for each layoutNode accordingly for (TableItem item : getViewer().getTable().getItems()) { if (item.getData() instanceof LayoutNode) { LayoutNode node = (LayoutNode) item.getData(); node.setInsertCode(item.getChecked()); } } getModifier().setGenerateDefaultListeners(generateListeners.getSelection()); getModifier().setCodeGeneratorData(getCodeGeneratorData()); super.okPressed(); } /** * Passing the focus request to the viewer's control. */ public void setFocus() { getViewer().getControl().setFocus(); } /* * (non-Javadoc) * * @see org.eclipse.jface.dialogs.Dialog#isResizable() */ @Override protected boolean isResizable() { return true; } }