Java tutorial
/* * Created on May 6, 2004 * * The MIT License * Copyright (c) 2004 Stephen Milligan * * Permission is hereby granted, free of charge, to any person obtaining a * copy of this software and associated documentation files (the "Software"), * to deal in the Software without restriction, including without limitation * the rights to use, copy, modify, merge, publish, distribute, sublicense, * and/or sell copies of the Software, and to permit persons to whom the Software * is furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included in * all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE * SOFTWARE. */ package org.cfeclipse.cfml.views.snips; import org.eclipse.jface.dialogs.Dialog; import org.eclipse.jface.dialogs.IDialogConstants; import org.eclipse.jface.viewers.TreeViewer; import org.eclipse.swt.SWT; import org.eclipse.swt.events.ModifyEvent; import org.eclipse.swt.events.ModifyListener; import org.eclipse.swt.events.SelectionEvent; import org.eclipse.swt.events.SelectionListener; import org.eclipse.swt.graphics.Color; import org.eclipse.swt.layout.GridData; import org.eclipse.swt.widgets.Button; import org.eclipse.swt.widgets.Composite; import org.eclipse.swt.widgets.Control; import org.eclipse.swt.widgets.Display; import org.eclipse.swt.widgets.Label; import org.eclipse.swt.widgets.Shell; import org.eclipse.swt.widgets.Text; //import org.eclipse.jface.dialogs.IInputValidator; /** * @author Stephen Milligan * * TODO: This really shouldn't be extending inputDialog, it should be extending Dialog */ public class SnipFileDialog extends Dialog { private static String dialogTitle = "New Snippet"; private static String snippetNameLabel = "Snippet name: "; private static String snippetKeyComboLabel = "Trigger text: "; private static String snippetDescriptionLabel = "Snippet description: "; private static String snippetCodeStartLabel = "Snippet starting block: "; private static String snippetCodeEndLabel = "Snippet closing block: "; private static String useSnippetAsTemplateLabel = "Use this snippet as a file template"; private static String templateExtensionLabel = "Template extension:"; private TreeViewer treeView; private Text snippetNameText, snippetKeyComboText, snippetDescriptionText, snippetStartText, snippetEndText, templateExtensionText; private String snippetNameValue = ""; private String snippetKeyComboValue = ""; private String snippetDescriptionValue = ""; private String snippetStartValue = ""; private String snippetEndValue = ""; private boolean useAsTemplate = false; private String templateExtensionValue = "cfm"; private SnipWriter writer; private Button useAsTemplateButton; /** * Ok button widget. */ private Button okButton; /** * Error message label widget. */ private Label errorMessageLabel; public SnipFileDialog(Shell parent, SnipWriter fileWriter, TreeViewer treeView, String snippetNameInitialValue, String snippetKeyComboInitialValue, String snippetDescriptionInitialValue, String startTextInitialValue, String endTextInitialValue, boolean useAsTemplateInitialValue, String templateExtensionInitialValue) { //super(parent, dialogTitle, snippetNameLabel, snippetNameInitialValue, null); super(parent); if (snippetNameInitialValue != null) { snippetNameValue = snippetNameInitialValue; } if (snippetKeyComboInitialValue != null) { snippetKeyComboValue = snippetKeyComboInitialValue; } if (snippetDescriptionInitialValue != null) { snippetDescriptionValue = snippetDescriptionInitialValue; } if (startTextInitialValue != null) { snippetStartValue = startTextInitialValue; } if (endTextInitialValue != null) { snippetEndValue = endTextInitialValue; } useAsTemplate = useAsTemplateInitialValue; if (templateExtensionInitialValue != null) { templateExtensionValue = templateExtensionInitialValue; } // TODO: Really should put some validation on this //this.validator = validator; this.treeView = treeView; writer = fileWriter; } protected Control createDialogArea(Composite parent) { Composite composite = (Composite) super.createDialogArea(parent); // Snippet name text box label Label label = new Label(composite, SWT.WRAP); label.setText(snippetNameLabel); GridData data = new GridData(GridData.GRAB_HORIZONTAL | // GridData.GRAB_VERTICAL | GridData.HORIZONTAL_ALIGN_FILL | GridData.VERTICAL_ALIGN_CENTER); data.widthHint = convertHorizontalDLUsToPixels(IDialogConstants.MINIMUM_MESSAGE_AREA_WIDTH); label.setLayoutData(data); label.setFont(parent.getFont()); // Snippet name text box snippetNameText = new Text(composite, SWT.SINGLE | SWT.BORDER); data = new GridData(GridData.GRAB_HORIZONTAL | GridData.HORIZONTAL_ALIGN_FILL); data.widthHint = convertWidthInCharsToPixels(20); snippetNameText.setLayoutData(data); snippetNameText.addModifyListener(new ModifyListener() { public void modifyText(ModifyEvent e) { validateInput(); } }); snippetNameText.setFont(parent.getFont()); //Snippet key combo text box label label = new Label(composite, SWT.WRAP); label.setText(snippetKeyComboLabel); data = new GridData(GridData.GRAB_HORIZONTAL | // GridData.GRAB_VERTICAL | GridData.HORIZONTAL_ALIGN_FILL | GridData.VERTICAL_ALIGN_CENTER); data.widthHint = convertHorizontalDLUsToPixels(IDialogConstants.MINIMUM_MESSAGE_AREA_WIDTH); label.setLayoutData(data); label.setFont(parent.getFont()); // Snippet key combo text box snippetKeyComboText = new Text(composite, SWT.SINGLE | SWT.BORDER); data = new GridData(GridData.GRAB_HORIZONTAL | GridData.HORIZONTAL_ALIGN_FILL); data.widthHint = convertWidthInCharsToPixels(20); snippetKeyComboText.setLayoutData(data); snippetKeyComboText.addModifyListener(new ModifyListener() { public void modifyText(ModifyEvent e) { validateInput(); } }); snippetKeyComboText.setFont(parent.getFont()); // Snippet description text box label label = new Label(composite, SWT.WRAP); label.setText(snippetDescriptionLabel); data = new GridData(GridData.GRAB_HORIZONTAL | // GridData.GRAB_VERTICAL | GridData.HORIZONTAL_ALIGN_FILL | GridData.VERTICAL_ALIGN_CENTER); data.widthHint = convertHorizontalDLUsToPixels(IDialogConstants.MINIMUM_MESSAGE_AREA_WIDTH); label.setLayoutData(data); label.setFont(parent.getFont()); // Snippet description text box snippetDescriptionText = new Text(composite, SWT.SINGLE | SWT.BORDER | SWT.WRAP); snippetDescriptionText .setLayoutData(new GridData(GridData.GRAB_HORIZONTAL | GridData.HORIZONTAL_ALIGN_FILL)); snippetDescriptionText.addModifyListener(new ModifyListener() { public void modifyText(ModifyEvent e) { validateInput(); } }); snippetDescriptionText.setFont(parent.getFont()); //Snippet start block label label = new Label(composite, SWT.WRAP); label.setText(snippetCodeStartLabel); data = new GridData(GridData.GRAB_HORIZONTAL | // GridData.GRAB_VERTICAL | GridData.HORIZONTAL_ALIGN_FILL | GridData.VERTICAL_ALIGN_CENTER); data.widthHint = convertHorizontalDLUsToPixels(IDialogConstants.MINIMUM_MESSAGE_AREA_WIDTH); label.setLayoutData(data); label.setFont(parent.getFont()); // Snippet start block text snippetStartText = new Text(composite, SWT.BORDER | SWT.MULTI | SWT.V_SCROLL | SWT.H_SCROLL); data = new GridData(GridData.GRAB_HORIZONTAL | GridData.HORIZONTAL_ALIGN_FILL | GridData.GRAB_VERTICAL | GridData.VERTICAL_ALIGN_FILL); data.heightHint = convertHeightInCharsToPixels(6); snippetStartText.setLayoutData(data); snippetStartText.addModifyListener(new ModifyListener() { public void modifyText(ModifyEvent e) { validateInput(); } }); snippetStartText.setFont(parent.getFont()); //Snippet end block label label = new Label(composite, SWT.WRAP); label.setText(snippetCodeEndLabel); data = new GridData(GridData.GRAB_HORIZONTAL | // GridData.GRAB_VERTICAL | GridData.HORIZONTAL_ALIGN_FILL | GridData.VERTICAL_ALIGN_CENTER); data.widthHint = convertHorizontalDLUsToPixels(IDialogConstants.MINIMUM_MESSAGE_AREA_WIDTH); label.setLayoutData(data); label.setFont(parent.getFont()); //Snippet end block text snippetEndText = new Text(composite, SWT.BORDER | SWT.MULTI | SWT.V_SCROLL | SWT.H_SCROLL); data = new GridData(GridData.GRAB_HORIZONTAL | GridData.HORIZONTAL_ALIGN_FILL | GridData.GRAB_VERTICAL | GridData.VERTICAL_ALIGN_FILL); data.heightHint = convertHeightInCharsToPixels(6); snippetEndText.setLayoutData(data); snippetEndText.addModifyListener(new ModifyListener() { public void modifyText(ModifyEvent e) { validateInput(); } }); snippetEndText.setFont(parent.getFont()); // Checkbox for use snippet as template useAsTemplateButton = new Button(composite, SWT.CHECK); useAsTemplateButton.setText(useSnippetAsTemplateLabel); data = new GridData(GridData.GRAB_HORIZONTAL | GridData.HORIZONTAL_ALIGN_FILL); data.widthHint = convertWidthInCharsToPixels(35); useAsTemplateButton.setLayoutData(data); useAsTemplateButton.addSelectionListener(new SelectionListener() { public void widgetSelected(SelectionEvent e) { useAsTemplate = useAsTemplateButton.getSelection(); // System.out.println("" + useAsTemplate); templateExtensionText.setEnabled(useAsTemplateButton.getSelection()); } public void widgetDefaultSelected(SelectionEvent e) { // Do nothing } }); useAsTemplateButton.setFont(parent.getFont()); // Template extension text box label label = new Label(composite, SWT.WRAP); label.setText(templateExtensionLabel); data = new GridData(GridData.GRAB_HORIZONTAL | // GridData.GRAB_VERTICAL | GridData.HORIZONTAL_ALIGN_FILL | GridData.VERTICAL_ALIGN_CENTER); data.widthHint = convertHorizontalDLUsToPixels(IDialogConstants.MINIMUM_MESSAGE_AREA_WIDTH); label.setLayoutData(data); label.setFont(parent.getFont()); // Template extension text box templateExtensionText = new Text(composite, SWT.SINGLE | SWT.BORDER); data = new GridData(GridData.GRAB_HORIZONTAL | GridData.HORIZONTAL_ALIGN_FILL); data.widthHint = convertWidthInCharsToPixels(20); templateExtensionText.setEnabled(false); templateExtensionText.setLayoutData(data); templateExtensionText.addModifyListener(new ModifyListener() { public void modifyText(ModifyEvent e) { validateInput(); } }); templateExtensionText.setFont(parent.getFont()); errorMessageLabel = new Label(composite, SWT.WRAP); data = new GridData(GridData.GRAB_HORIZONTAL | // GridData.GRAB_VERTICAL | GridData.HORIZONTAL_ALIGN_FILL | GridData.VERTICAL_ALIGN_CENTER); data.heightHint = convertHeightInCharsToPixels(2); errorMessageLabel.setLayoutData(data); errorMessageLabel.setFont(parent.getFont()); Color color = new Color(Display.getCurrent(), 255, 0, 0); errorMessageLabel.setForeground(color); return composite; } protected void okPressed() { // Don't allow empty extension if (useAsTemplateButton.getSelection() && templateExtensionText.getText().trim().equals("")) { templateExtensionText.setText("cfm"); } writer.writeSnippet(snippetNameText.getText(), snippetKeyComboText.getText(), snippetDescriptionText.getText(), snippetStartText.getText(), snippetEndText.getText(), useAsTemplateButton.getSelection(), templateExtensionText.getText()); close(); treeView.refresh(); } protected void buttonPressed(int buttonId) { if (buttonId == IDialogConstants.OK_ID) { snippetNameValue = snippetNameText.getText(); snippetKeyComboValue = snippetKeyComboText.getText(); snippetDescriptionValue = snippetDescriptionText.getText(); snippetStartValue = snippetStartText.getText(); snippetEndValue = snippetEndText.getText(); useAsTemplate = useAsTemplateButton.getSelection(); templateExtensionValue = templateExtensionText.getText(); } else { snippetNameValue = null; snippetKeyComboValue = null; snippetDescriptionValue = null; snippetStartValue = null; snippetEndValue = null; useAsTemplate = false; templateExtensionValue = "cfm"; } super.buttonPressed(buttonId); } protected void configureShell(Shell shell) { super.configureShell(shell); if (dialogTitle != null) shell.setText(dialogTitle); } protected void createButtonsForButtonBar(Composite parent) { // create OK and Cancel buttons by default okButton = createButton(parent, IDialogConstants.OK_ID, IDialogConstants.OK_LABEL, true); createButton(parent, IDialogConstants.CANCEL_ID, IDialogConstants.CANCEL_LABEL, false); //do this here because setting the text will set enablement on the ok button snippetNameText.setFocus(); if (snippetNameValue != null) { snippetNameText.setText(snippetNameValue); snippetNameText.selectAll(); } if (snippetKeyComboValue != null) { snippetKeyComboText.setText(snippetKeyComboValue); } if (snippetDescriptionValue != null) { snippetDescriptionText.setText(snippetDescriptionValue); } if (snippetStartValue != null) { snippetStartText.setText(snippetStartValue); } if (snippetEndValue != null) { snippetEndText.setText(snippetEndValue); } useAsTemplateButton.setSelection(useAsTemplate); templateExtensionText.setEnabled(useAsTemplate); templateExtensionText.setText(templateExtensionValue); } protected Label getErrorMessageLabel() { return errorMessageLabel; } protected Button getOkButton() { return okButton; } protected boolean isResizable() { return true; } protected void validateInput() { String errorMessage = null; if (!snippetNameText.getText().matches("[0-9a-zA-Z _-]+")) { errorMessage = "The snippet name can only contain numbers, alphabetic characters, space underscore and dash."; } else if (snippetKeyComboText.getText().length() > 0 && !snippetKeyComboText.getText().matches("[0-9a-zA-Z_-]+")) { errorMessage = "The trigger text can only contain numbers, alphabetic characters, underscore and dash."; } else if (!templateExtensionText.getText().matches("[0-9a-zA-Z_.]+")) { errorMessage = "The template extension can only contain numbers, alphabetic characters, periods and underscores"; } errorMessageLabel.setText(errorMessage == null ? "" : errorMessage); //$NON-NLS-1$ okButton.setEnabled(errorMessage == null); errorMessageLabel.getParent().update(); } }