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/**
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*
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*/
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package eu.etaxonomy.taxeditor.ui.element;
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import org.eclipse.swt.SWT;
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import org.eclipse.swt.events.KeyAdapter;
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import org.eclipse.swt.events.KeyEvent;
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import org.eclipse.swt.events.ModifyEvent;
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import org.eclipse.swt.events.ModifyListener;
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import org.eclipse.swt.graphics.Color;
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import org.eclipse.swt.layout.GridData;
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import org.eclipse.swt.widgets.Composite;
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import org.eclipse.swt.widgets.Control;
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import org.eclipse.swt.widgets.Label;
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import org.eclipse.swt.widgets.Listener;
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import org.eclipse.swt.widgets.Text;
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import org.eclipse.ui.forms.widgets.TableWrapData;
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import eu.etaxonomy.cdm.common.CdmUtils;
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import eu.etaxonomy.taxeditor.preference.Resources;
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/**
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* @author n.hoffmann
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* @version $Id: $
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*/
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public class TextWithLabelElement extends AbstractCdmFormElement implements ModifyListener, IEnableableFormElement,
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ISelectable {
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protected Text text;
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private Label label;
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private final boolean isMultiLine;
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public static final int MAX_HEIGHT = 0;
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public static final int SINGLE = -1;
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protected TextWithLabelElement(CdmFormFactory formFactory, ICdmFormElement parentElement, boolean isMultiLine) {
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super(formFactory, parentElement);
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this.isMultiLine = isMultiLine;
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}
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protected TextWithLabelElement(CdmFormFactory formFactory, ICdmFormElement parentElement, String labelString,
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String initialText, Integer textHeight, int style) {
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this(formFactory, parentElement, labelString, initialText, textHeight, null, false, style);
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}
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protected TextWithLabelElement(CdmFormFactory formFactory, ICdmFormElement parentElement, String labelString,
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String initialText, Integer textHeight, boolean isMultiLine, int style) {
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this(formFactory, parentElement, labelString, initialText, textHeight, null, isMultiLine, style);
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}
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protected TextWithLabelElement(CdmFormFactory formFactory, ICdmFormElement parentElement, String labelString,
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String initialText, Integer textHeight, Integer textLimit, int style) {
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this(formFactory, parentElement, labelString, initialText, textHeight, textLimit, false, style);
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}
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protected TextWithLabelElement(CdmFormFactory formFactory, ICdmFormElement parentElement, String labelString,
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String initialText, Integer textHeight, Integer textLimit, boolean isMultiLine, int style) {
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super(formFactory, parentElement);
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this.isMultiLine = isMultiLine;
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initLabel(formFactory, labelString, isMultiLine, getLayoutComposite());
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initText(formFactory, initialText, textHeight, textLimit, isMultiLine, style, getLayoutComposite());
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}
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protected void initText(CdmFormFactory formFactory, String initialText, Integer textHeight, Integer textLimit,
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boolean isMultiLine, int style, Composite layoutComposite) {
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int scrollStyle = textHeight == null ? SWT.NULL : (SWT.V_SCROLL | SWT.MULTI);
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int combinedStyle = style | SWT.BORDER | scrollStyle;
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// SWT.PASSWORD does not work when SWT.WRAP is set.
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if (style != SWT.PASSWORD) {
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combinedStyle = combinedStyle | SWT.WRAP;
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}
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text = formFactory.createText(layoutComposite, "", combinedStyle);
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text.setTextLimit(textLimit!=null?textLimit:Text.LIMIT);
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addControl(text);
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// text.setWO
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if (textHeight == null) {
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text.addKeyListener(new KeyAdapter() {
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@Override
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public void keyPressed(KeyEvent e) {
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if (e.character == SWT.CR) {
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// Don't accept carriage returns as input when in single
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// line mode
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e.doit = false;
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} else if (e.character == SWT.TAB) {
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// traverse is not working for wrapped text widgets so
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// we reintroduce it here
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e.doit = false;
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TextWithLabelElement.this.text.traverse(SWT.TRAVERSE_TAB_NEXT);
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}
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}
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});
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}
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TableWrapData layoutData;
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if(isMultiLine){
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layoutData = LayoutConstants.FILL_HORIZONTALLY(2, 1);
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}
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else{
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layoutData = LayoutConstants.FILL();
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}
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if (textHeight != null && textHeight > 0) {
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(layoutData).heightHint = textHeight;
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}
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text.setLayoutData(layoutData);
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text.addModifyListener(this);
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setText(initialText);
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}
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protected void initLabel(CdmFormFactory formFactory, String labelString, boolean isMultiLine, Composite layoutComposite) {
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if (labelString != null) {
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label = formFactory.createLabel(layoutComposite, CdmUtils.Nz(labelString), SWT.NULL);
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addControl(label);
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if(isMultiLine){
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label.setLayoutData(LayoutConstants.FILL_HORIZONTALLY(2, 1));
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((TableWrapData)label.getLayoutData()).valign = TableWrapData.MIDDLE;
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}
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else{
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label.setLayoutData(LayoutConstants.LEFT());
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((TableWrapData)label.getLayoutData()).valign = TableWrapData.MIDDLE;
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}
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}
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}
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/**
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* Get the text of this composites text composite
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*
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* @return a {@link java.lang.String} object.
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*/
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public String getText() {
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return CdmUtils.Nb(text.getText());
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}
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/**
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* Set the text of this composites text composite
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*
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* @param string
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* a {@link java.lang.String} object.
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*/
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public void setText(String string) {
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Listener[] listeners = text.getListeners(SWT.Modify);
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for (Listener listener : listeners) {
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text.removeListener(SWT.Modify, listener);
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}
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text.setText(CdmUtils.Nz(string));
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for (Listener listener : listeners) {
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text.addListener(SWT.Modify, listener);
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}
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}
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/** {@inheritDoc} */
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@Override
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public void modifyText(ModifyEvent e) {
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if(e.widget==text && !isMultiLine){
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Text text = (Text) e.widget;
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boolean hasControlCharacters = false;
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String textString = text.getText();
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int stringLength = textString.length();
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for (int i = 0; i < stringLength; i++) {
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if (Character.isISOControl(textString.charAt(i))) {
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hasControlCharacters = true;
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break;
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}
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}
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if(hasControlCharacters){
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//remove control character such as line breaks etc.
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setText(text.getText().replaceAll("\\p{C}", new Character((char)9608).toString()));
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}
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}
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firePropertyChangeEvent(new CdmPropertyChangeEvent(this, e));
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}
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/** {@inheritDoc} */
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@Override
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public void setEnabled(boolean enabled) {
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text.setEnabled(enabled);
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String symbolicName = enabled ? Resources.COLOR_FONT_DEFAULT : Resources.COLOR_TEXT_DISABLED;
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text.setForeground(getColor(symbolicName));
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}
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@Override
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public boolean isEnabled() {
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return text.isEnabled();
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}
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/** {@inheritDoc} */
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@Override
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public void setIrrelevant(boolean irrelevant) {
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String colorId = irrelevant ? Resources.COLOR_COMPOSITE_IRRELEVANT : Resources.COLOR_COMPOSITE_BACKGROUND;
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Color color = getColor(colorId);
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text.setBackground(color);
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}
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/** {@inheritDoc} */
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@Override
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public void setBackground(Color color) {
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if (label != null) {
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label.setBackground(color);
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}
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}
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@Override
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public void setSelected(boolean selected) {
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setBackground(selected ? SELECTED : getPersistentBackground());
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}
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/** {@inheritDoc} */
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@Override
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public void setFocus() {
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text.setFocus();
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}
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public Control getMainControl() {
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return text;
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}
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public void setTextLimit(int limit) {
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text.setTextLimit(limit);
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}
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}
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