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- /*
- @ITMillApache2LicenseForJavaFiles@
- */
-
- package com.vaadin.terminal.gwt.client.ui;
-
- import java.util.ArrayList;
- import java.util.Iterator;
-
- import com.google.gwt.event.dom.client.ClickEvent;
- import com.google.gwt.event.dom.client.DoubleClickEvent;
- import com.google.gwt.event.dom.client.DoubleClickHandler;
- import com.google.gwt.event.dom.client.HasDoubleClickHandlers;
- import com.google.gwt.event.dom.client.KeyCodes;
- import com.google.gwt.event.dom.client.KeyDownEvent;
- import com.google.gwt.event.dom.client.KeyDownHandler;
- import com.google.gwt.event.dom.client.MouseDownEvent;
- import com.google.gwt.event.dom.client.MouseDownHandler;
- import com.google.gwt.event.shared.HandlerRegistration;
- import com.google.gwt.user.client.DOM;
- import com.google.gwt.user.client.ui.FlowPanel;
- import com.google.gwt.user.client.ui.HTML;
- import com.google.gwt.user.client.ui.ListBox;
- import com.google.gwt.user.client.ui.Panel;
- import com.vaadin.terminal.gwt.client.UIDL;
-
- public class VTwinColSelect extends VOptionGroupBase implements KeyDownHandler,
- MouseDownHandler, DoubleClickHandler {
-
- private static final String CLASSNAME = "v-select-twincol";
-
- private static final int VISIBLE_COUNT = 10;
-
- private static final int DEFAULT_COLUMN_COUNT = 10;
-
- private final DoubleClickListBox options;
-
- private final DoubleClickListBox selections;
-
- private final VButton add;
-
- private final VButton remove;
-
- private final FlowPanel buttons;
-
- private final Panel panel;
-
- private boolean widthSet = false;
-
- /**
- * A ListBox which catches double clicks
- *
- */
- public class DoubleClickListBox extends ListBox implements
- HasDoubleClickHandlers {
- public DoubleClickListBox(boolean isMultipleSelect) {
- super(isMultipleSelect);
- }
-
- public DoubleClickListBox() {
- super();
- }
-
- public HandlerRegistration addDoubleClickHandler(
- DoubleClickHandler handler) {
- return addDomHandler(handler, DoubleClickEvent.getType());
- }
- }
-
- public VTwinColSelect() {
- super(CLASSNAME);
- options = new DoubleClickListBox();
- options.addClickHandler(this);
- options.addDoubleClickHandler(this);
- selections = new DoubleClickListBox();
- selections.addClickHandler(this);
- selections.addDoubleClickHandler(this);
- options.setVisibleItemCount(VISIBLE_COUNT);
- selections.setVisibleItemCount(VISIBLE_COUNT);
- options.setStyleName(CLASSNAME + "-options");
- selections.setStyleName(CLASSNAME + "-selections");
- buttons = new FlowPanel();
- buttons.setStyleName(CLASSNAME + "-buttons");
- add = new VButton();
- add.setText(">>");
- add.addClickHandler(this);
- remove = new VButton();
- remove.setText("<<");
- remove.addClickHandler(this);
- panel = ((Panel) optionsContainer);
- panel.add(options);
- buttons.add(add);
- final HTML br = new HTML("<span/>");
- br.setStyleName(CLASSNAME + "-deco");
- buttons.add(br);
- buttons.add(remove);
- panel.add(buttons);
- panel.add(selections);
-
- options.addKeyDownHandler(this);
- options.addMouseDownHandler(this);
-
- selections.addMouseDownHandler(this);
- selections.addKeyDownHandler(this);
- }
-
- @Override
- protected void buildOptions(UIDL uidl) {
- final boolean enabled = !isDisabled() && !isReadonly();
- options.setMultipleSelect(isMultiselect());
- selections.setMultipleSelect(isMultiselect());
- options.setEnabled(enabled);
- selections.setEnabled(enabled);
- add.setEnabled(enabled);
- remove.setEnabled(enabled);
- options.clear();
- selections.clear();
- for (final Iterator i = uidl.getChildIterator(); i.hasNext();) {
- final UIDL optionUidl = (UIDL) i.next();
- if (optionUidl.hasAttribute("selected")) {
- selections.addItem(optionUidl.getStringAttribute("caption"),
- optionUidl.getStringAttribute("key"));
- } else {
- options.addItem(optionUidl.getStringAttribute("caption"),
- optionUidl.getStringAttribute("key"));
- }
- }
-
- int cols = -1;
- if (getColumns() > 0) {
- cols = getColumns();
- } else if (!widthSet) {
- cols = DEFAULT_COLUMN_COUNT;
- }
-
- if (cols >= 0) {
- options.setWidth(cols + "em");
- selections.setWidth(cols + "em");
- buttons.setWidth("3.5em");
- optionsContainer.setWidth((2 * cols + 4) + "em");
- }
- if (getRows() > 0) {
- options.setVisibleItemCount(getRows());
- selections.setVisibleItemCount(getRows());
-
- }
-
- }
-
- @Override
- protected String[] getSelectedItems() {
- final ArrayList<String> selectedItemKeys = new ArrayList<String>();
- for (int i = 0; i < selections.getItemCount(); i++) {
- selectedItemKeys.add(selections.getValue(i));
- }
- return selectedItemKeys.toArray(new String[selectedItemKeys.size()]);
- }
-
- private boolean[] getItemsToAdd() {
- final boolean[] selectedIndexes = new boolean[options.getItemCount()];
- for (int i = 0; i < options.getItemCount(); i++) {
- if (options.isItemSelected(i)) {
- selectedIndexes[i] = true;
- } else {
- selectedIndexes[i] = false;
- }
- }
- return selectedIndexes;
- }
-
- private boolean[] getItemsToRemove() {
- final boolean[] selectedIndexes = new boolean[selections.getItemCount()];
- for (int i = 0; i < selections.getItemCount(); i++) {
- if (selections.isItemSelected(i)) {
- selectedIndexes[i] = true;
- } else {
- selectedIndexes[i] = false;
- }
- }
- return selectedIndexes;
- }
-
- private void addItem() {
- final boolean[] sel = getItemsToAdd();
- for (int i = 0; i < sel.length; i++) {
- if (sel[i]) {
- final int optionIndex = i
- - (sel.length - options.getItemCount());
- selectedKeys.add(options.getValue(optionIndex));
-
- // Move selection to another column
- final String text = options.getItemText(optionIndex);
- final String value = options.getValue(optionIndex);
- selections.addItem(text, value);
- selections.setItemSelected(selections.getItemCount() - 1, true);
- options.removeItem(optionIndex);
-
- if (options.getItemCount() > 0) {
- options.setItemSelected(optionIndex > 0 ? optionIndex - 1
- : 0, true);
- }
- }
- }
-
- // If no items are left move the focus to the selections
- if (options.getItemCount() == 0) {
- selections.setFocus(true);
- } else {
- options.setFocus(true);
- }
-
- client.updateVariable(id, "selected",
- selectedKeys.toArray(new String[selectedKeys.size()]),
- isImmediate());
- }
-
- private void removeItem() {
- final boolean[] sel = getItemsToRemove();
- for (int i = 0; i < sel.length; i++) {
- if (sel[i]) {
- final int selectionIndex = i
- - (sel.length - selections.getItemCount());
- selectedKeys.remove(selections.getValue(selectionIndex));
-
- // Move selection to another column
- final String text = selections.getItemText(selectionIndex);
- final String value = selections.getValue(selectionIndex);
- options.addItem(text, value);
- options.setItemSelected(options.getItemCount() - 1, true);
- selections.removeItem(selectionIndex);
-
- if (selections.getItemCount() > 0) {
- selections.setItemSelected(
- selectionIndex > 0 ? selectionIndex - 1 : 0, true);
- }
- }
- }
-
- // If no items are left move the focus to the selections
- if (selections.getItemCount() == 0) {
- options.setFocus(true);
- } else {
- selections.setFocus(true);
- }
-
- client.updateVariable(id, "selected",
- selectedKeys.toArray(new String[selectedKeys.size()]),
- isImmediate());
- }
-
- @Override
- public void onClick(ClickEvent event) {
- super.onClick(event);
- if (event.getSource() == add) {
- addItem();
-
- } else if (event.getSource() == remove) {
- removeItem();
-
- } else if (event.getSource() == options) {
- // unselect all in other list, to avoid mistakes (i.e wrong button)
- final int c = selections.getItemCount();
- for (int i = 0; i < c; i++) {
- selections.setItemSelected(i, false);
- }
- } else if (event.getSource() == selections) {
- // unselect all in other list, to avoid mistakes (i.e wrong button)
- final int c = options.getItemCount();
- for (int i = 0; i < c; i++) {
- options.setItemSelected(i, false);
- }
- }
- }
-
- @Override
- public void setHeight(String height) {
- super.setHeight(height);
- if ("".equals(height)) {
- options.setHeight("");
- selections.setHeight("");
- } else {
- setFullHeightInternals();
- }
- }
-
- private void setFullHeightInternals() {
- options.setHeight("100%");
- selections.setHeight("100%");
- }
-
- @Override
- public void setWidth(String width) {
- super.setWidth(width);
- if (!"".equals(width) && width != null) {
- setRelativeInternalWidths();
- }
- }
-
- private void setRelativeInternalWidths() {
- DOM.setStyleAttribute(getElement(), "position", "relative");
- buttons.setWidth("15%");
- options.setWidth("42%");
- selections.setWidth("42%");
- widthSet = true;
- }
-
- @Override
- protected void setTabIndex(int tabIndex) {
- options.setTabIndex(tabIndex);
- selections.setTabIndex(tabIndex);
- add.setTabIndex(tabIndex);
- remove.setTabIndex(tabIndex);
- }
-
- public void focus() {
- options.setFocus(true);
- }
-
- /**
- * Get the key that selects an item in the table. By default it is the Enter
- * key but by overriding this you can change the key to whatever you want.
- *
- * @return
- */
- protected int getNavigationSelectKey() {
- return KeyCodes.KEY_ENTER;
- }
-
- /*
- * (non-Javadoc)
- *
- * @see
- * com.google.gwt.event.dom.client.KeyDownHandler#onKeyDown(com.google.gwt
- * .event.dom.client.KeyDownEvent)
- */
- public void onKeyDown(KeyDownEvent event) {
- int keycode = event.getNativeKeyCode();
-
- // Catch tab and move between select:s
- if (keycode == KeyCodes.KEY_TAB && event.getSource() == options) {
- // Prevent default behavior
- event.preventDefault();
-
- // Remove current selections
- for (int i = 0; i < options.getItemCount(); i++) {
- options.setItemSelected(i, false);
- }
-
- // Focus selections
- selections.setFocus(true);
- }
-
- if (keycode == KeyCodes.KEY_TAB && event.isShiftKeyDown()
- && event.getSource() == selections) {
- // Prevent default behavior
- event.preventDefault();
-
- // Remove current selections
- for (int i = 0; i < selections.getItemCount(); i++) {
- selections.setItemSelected(i, false);
- }
-
- // Focus options
- options.setFocus(true);
- }
-
- if (keycode == getNavigationSelectKey()) {
- // Prevent default behavior
- event.preventDefault();
-
- // Decide which select the selection was made in
- if (event.getSource() == options) {
- // Prevents the selection to become a single selection when
- // using Enter key
- // as the selection key (default)
- options.setFocus(false);
-
- addItem();
-
- } else if (event.getSource() == selections) {
- // Prevents the selection to become a single selection when
- // using Enter key
- // as the selection key (default)
- selections.setFocus(false);
-
- removeItem();
- }
- }
-
- }
-
- /*
- * (non-Javadoc)
- *
- * @see
- * com.google.gwt.event.dom.client.MouseDownHandler#onMouseDown(com.google
- * .gwt.event.dom.client.MouseDownEvent)
- */
- public void onMouseDown(MouseDownEvent event) {
- // Ensure that items are deselected when selecting
- // from a different source. See #3699 for details.
- if (event.getSource() == options) {
- for (int i = 0; i < selections.getItemCount(); i++) {
- selections.setItemSelected(i, false);
- }
- } else if (event.getSource() == selections) {
- for (int i = 0; i < options.getItemCount(); i++) {
- options.setItemSelected(i, false);
- }
- }
-
- }
-
- /*
- * (non-Javadoc)
- *
- * @see
- * com.google.gwt.event.dom.client.DoubleClickHandler#onDoubleClick(com.
- * google.gwt.event.dom.client.DoubleClickEvent)
- */
- public void onDoubleClick(DoubleClickEvent event) {
- if (event.getSource() == options) {
- addItem();
- options.setSelectedIndex(-1);
- options.setFocus(false);
- } else if (event.getSource() == selections) {
- removeItem();
- selections.setSelectedIndex(-1);
- selections.setFocus(false);
- }
-
- }
- }
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