Java tutorial
/* * Copyright 2009-2011 Amazon Technologies, 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://aws.amazon.com/apache2.0 * * This file 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.amazonaws.eclipse.datatools.enablement.simpledb.editor.wizard; import java.lang.reflect.Field; import java.lang.reflect.InvocationTargetException; import java.lang.reflect.Method; import java.text.MessageFormat; import org.eclipse.core.runtime.IStatus; import org.eclipse.datatools.sqltools.data.internal.core.editor.RowDataImpl; import org.eclipse.datatools.sqltools.data.internal.ui.editor.TableDataCell; import org.eclipse.datatools.sqltools.data.internal.ui.editor.TableDataEditor; import org.eclipse.jface.viewers.StructuredSelection; import org.eclipse.jface.viewers.TableViewer; import org.eclipse.jface.wizard.WizardPage; import org.eclipse.swt.SWT; import org.eclipse.swt.events.ModifyEvent; import org.eclipse.swt.events.ModifyListener; import org.eclipse.swt.layout.FormAttachment; import org.eclipse.swt.layout.FormData; import org.eclipse.swt.layout.FormLayout; import org.eclipse.swt.widgets.Composite; import org.eclipse.swt.widgets.Label; import org.eclipse.swt.widgets.Text; import com.amazonaws.eclipse.datatools.enablement.simpledb.driver.SimpleDBItemName; import com.amazonaws.eclipse.datatools.enablement.simpledb.editor.Activator; import com.amazonaws.eclipse.datatools.enablement.simpledb.editor.Messages; public class SDBTableIdDataWizardPage extends WizardPage { private static final int INDENT = 6; private final TableDataEditor editor; private int col; private RowDataImpl rowData; private Text t; public SDBTableIdDataWizardPage(final TableDataEditor editor) { super(Messages.idPageTitle); setTitle(Messages.idPageTitle); setMessage(Messages.idMainMessage); this.editor = editor; } public void createControl(final Composite parent) { Composite composite = new Composite(parent, SWT.NONE); FormLayout layout = new FormLayout(); layout.marginWidth = INDENT; layout.marginHeight = INDENT; composite.setLayout(layout); final Label l = new Label(composite, SWT.None); l.setText(Messages.labelEditAttributeValues); this.t = new Text(composite, SWT.MULTI | SWT.BORDER | SWT.V_SCROLL); this.t.addModifyListener(new ModifyListener() { public void modifyText(final ModifyEvent a) { if (SDBTableIdDataWizardPage.this.t.getText().getBytes().length > 1024) { setErrorMessage(Messages.valueToLong); setPageComplete(false); } else { setErrorMessage(null); setPageComplete(true); } } }); FormData d = new FormData(); d.top = new FormAttachment(0, 0); d.left = new FormAttachment(0, 0); d.right = new FormAttachment(100, 0); l.setLayoutData(d); d = new FormData(); d.top = new FormAttachment(l, INDENT); d.left = new FormAttachment(0, 0); d.right = new FormAttachment(100, 0); d.bottom = new FormAttachment(100, 0); this.t.setLayoutData(d); createContent(); setControl(composite); } protected void saveData() { Object oldVal = this.rowData.getValue(this.col); if (oldVal instanceof SimpleDBItemName) { ((SimpleDBItemName) oldVal).setItemName(this.t.getText()); } else { this.rowData.updateValue(this.col, this.t.getText()); } try { Class<?> c = Class.forName(TableDataEditor.class.getCanonicalName()); Field f1 = c.getDeclaredField("tableViewer");//$NON-NLS-1$ f1.setAccessible(true); TableViewer tv = (TableViewer) f1.get(this.editor); tv.refresh(this.rowData); this.editor.getCursor().redraw(); Method m = c.getDeclaredMethod("setDirty", new Class[] { java.lang.Boolean.TYPE });//$NON-NLS-1$ m.setAccessible(true); m.invoke(this.editor, new Object[] { Boolean.TRUE }); this.editor.setDirtyBackground(this.col, this.editor.getCursor().getRow()); } catch (SecurityException e) { Activator.logMessage(e.getMessage(), e, IStatus.ERROR); } catch (ClassNotFoundException e) { Activator.logMessage(e.getMessage(), e, IStatus.ERROR); } catch (NoSuchFieldException e) { Activator.logMessage(e.getMessage(), e, IStatus.ERROR); } catch (IllegalArgumentException e) { Activator.logMessage(e.getMessage(), e, IStatus.ERROR); } catch (IllegalAccessException e) { Activator.logMessage(e.getMessage(), e, IStatus.ERROR); } catch (NoSuchMethodException e) { Activator.logMessage(e.getMessage(), e, IStatus.ERROR); } catch (InvocationTargetException e) { Activator.logMessage(e.getMessage(), e, IStatus.ERROR); } } private void createContent() { Object value; this.col = this.editor.getCursor().getColumn(); StructuredSelection selection = (StructuredSelection) this.editor.getSelectionProvider().getSelection(); TableDataCell firstElement = (TableDataCell) selection.getFirstElement(); Object row = firstElement.getRow(); if (row instanceof RowDataImpl) { this.rowData = (RowDataImpl) row; value = this.rowData.getValue(this.col); } else { //This usually means that the row was just created and no RowDataImpl have been created yet. this.rowData = (RowDataImpl) this.editor.getOrCreateRow(); value = ""; //$NON-NLS-1$ } if (value == null) { this.t.setText(""); //$NON-NLS-1$ setPageComplete(true); } else if (value instanceof String) { this.t.setText((String) value); setPageComplete(true); } else if (value instanceof SimpleDBItemName) { this.t.setText(((SimpleDBItemName) value).getItemName()); setPageComplete(true); } else { setErrorMessage( (MessageFormat.format(Messages.incorrectDataType, value.getClass().getCanonicalName()))); this.t.setEnabled(false); setPageComplete(false); } } }