+++ /dev/null
-package org.argeo.suite.ui.widgets;
-
-import java.util.Arrays;
-import java.util.List;
-
-import org.argeo.cms.ui.util.CmsUiUtils;
-import org.argeo.eclipse.ui.EclipseUiUtils;
-import org.eclipse.rap.rwt.widgets.DropDown;
-import org.eclipse.swt.SWT;
-import org.eclipse.swt.events.FocusEvent;
-import org.eclipse.swt.events.FocusListener;
-import org.eclipse.swt.widgets.Event;
-import org.eclipse.swt.widgets.Listener;
-import org.eclipse.swt.widgets.Text;
-import org.eclipse.swt.widgets.Widget;
-
-/**
- * Enable easy addition of a {@code DropDown} widget to a text with listeners
- * configured
- */
-public abstract class ConnectAbstractDropDown {
-
- private final Text text;
- private final DropDown dropDown;
- private boolean modifyFromList = false;
-
- // Current displayed text
- private String userText = "";
- // Current displayed list items
- private String[] values;
-
- // Fine tuning
- boolean readOnly;
- boolean refreshOnFocus;
-
- /** Implementing classes should call refreshValues() after initialisation */
- public ConnectAbstractDropDown(Text text) {
- this(text, SWT.NONE, false);
- }
-
- /**
- * Implementing classes should call refreshValues() after initialisation
- *
- * @param text
- * @param style
- * only SWT.READ_ONLY is understood, check if the entered text is
- * part of the legal choices.
- */
- public ConnectAbstractDropDown(Text text, int style) {
- this(text, style, false);
- }
-
- /**
- * Implementers should call refreshValues() once init has been done.
- *
- * @param text
- * @param style
- * only SWT.READ_ONLY is understood, check if the entered text is
- * part of the legal choices.
- * @param refreshOnFocus
- * if true, the possible values are computed each time the focus is
- * gained. It enables, among other to fine tune the getFilteredValues
- * method depending on the current context
- */
- public ConnectAbstractDropDown(Text text, int style, boolean refreshOnFocus) {
- this.text = text;
- dropDown = new DropDown(text);
- Object obj = dropDown;
- if (obj instanceof Widget)
- CmsUiUtils.markup((Widget) obj);
- readOnly = (style & SWT.READ_ONLY) != 0;
- this.refreshOnFocus = refreshOnFocus;
- addListeners();
- }
-
- /**
- * Overwrite to force the refresh of the possible values on focus gained event
- */
- protected boolean refreshOnFocus() {
- return refreshOnFocus;
- }
-
- public String getText() {
- return text.getText();
- }
-
- public void init() {
- refreshValues();
- }
-
- public void reset(String value) {
- modifyFromList = true;
- if (EclipseUiUtils.notEmpty(value))
- text.setText(value);
- else
- text.setText("");
- refreshValues();
- modifyFromList = false;
- }
-
- /** Overwrite to provide specific filtering */
- protected abstract List<String> getFilteredValues(String filter);
-
- protected void refreshValues() {
- List<String> filteredValues = getFilteredValues(text.getText());
- values = filteredValues.toArray(new String[filteredValues.size()]);
- dropDown.setItems(values);
- }
-
- protected void addListeners() {
- addModifyListener();
- addSelectionListener();
- addDefaultSelectionListener();
- addFocusListener();
- }
-
- protected void addFocusListener() {
- text.addFocusListener(new FocusListener() {
- private static final long serialVersionUID = -7179112097626535946L;
-
- public void focusGained(FocusEvent event) {
- if (refreshOnFocus) {
- modifyFromList = true;
- refreshValues();
- modifyFromList = false;
- }
- dropDown.setVisible(true);
- }
-
- public void focusLost(FocusEvent event) {
- dropDown.setVisible(false);
- if (readOnly && values != null && !Arrays.asList(values).contains(userText)) {
- modifyFromList = true;
- text.setText("");
- refreshValues();
- modifyFromList = false;
- }
- }
- });
- }
-
- private void addSelectionListener() {
- Object obj = dropDown;
- if (obj instanceof Widget)
- ((Widget) obj).addListener(SWT.Selection, new Listener() {
- private static final long serialVersionUID = -2357157809365135142L;
-
- public void handleEvent(Event event) {
- if (event.index != -1) {
- modifyFromList = true;
- text.setText(values[event.index]);
- modifyFromList = false;
- text.selectAll();
- } else {
- text.setText(userText);
- text.setSelection(userText.length(), userText.length());
- text.setFocus();
- }
- }
- });
- }
-
- private void addDefaultSelectionListener() {
- Object obj = dropDown;
- if (obj instanceof Widget)
- ((Widget) obj).addListener(SWT.DefaultSelection, new Listener() {
- private static final long serialVersionUID = -5958008322630466068L;
-
- public void handleEvent(Event event) {
- if (event.index != -1) {
- text.setText(values[event.index]);
- text.setSelection(event.text.length());
- dropDown.setVisible(false);
- }
- }
- });
- }
-
- private void addModifyListener() {
- text.addListener(SWT.Modify, new Listener() {
- private static final long serialVersionUID = -4373972835244263346L;
-
- public void handleEvent(Event event) {
- if (!modifyFromList) {
- userText = text.getText();
- refreshValues();
- if (values.length == 1)
- dropDown.setSelectionIndex(0);
- dropDown.setVisible(true);
- }
- }
- });
- }
-}
projects / gpl / argeo-suite.git / blobdiff