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- /*
- @VaadinApache2LicenseForJavaFiles@
- */
- package com.vaadin.terminal.gwt.client.ui;
-
- import java.util.HashSet;
- import java.util.Iterator;
- import java.util.NoSuchElementException;
- import java.util.Set;
-
- import com.google.gwt.event.dom.client.ClickEvent;
- import com.google.gwt.event.dom.client.ClickHandler;
- import com.google.gwt.event.dom.client.KeyCodes;
- import com.google.gwt.event.logical.shared.CloseEvent;
- import com.google.gwt.event.logical.shared.CloseHandler;
- import com.google.gwt.user.client.DOM;
- import com.google.gwt.user.client.Element;
- import com.google.gwt.user.client.Event;
- import com.google.gwt.user.client.ui.Focusable;
- import com.google.gwt.user.client.ui.HTML;
- import com.google.gwt.user.client.ui.HasWidgets;
- import com.google.gwt.user.client.ui.Label;
- import com.google.gwt.user.client.ui.PopupPanel;
- import com.google.gwt.user.client.ui.RootPanel;
- import com.google.gwt.user.client.ui.Widget;
- import com.vaadin.terminal.gwt.client.ApplicationConnection;
- import com.vaadin.terminal.gwt.client.Container;
- import com.vaadin.terminal.gwt.client.RenderInformation.Size;
- import com.vaadin.terminal.gwt.client.RenderSpace;
- import com.vaadin.terminal.gwt.client.UIDL;
- import com.vaadin.terminal.gwt.client.Util;
- import com.vaadin.terminal.gwt.client.VCaption;
- import com.vaadin.terminal.gwt.client.VCaptionWrapper;
- import com.vaadin.terminal.gwt.client.VPaintableWidget;
- import com.vaadin.terminal.gwt.client.VTooltip;
- import com.vaadin.terminal.gwt.client.ui.richtextarea.VRichTextArea;
-
- public class VPopupView extends HTML implements Container, Iterable<Widget> {
-
- public static final String CLASSNAME = "v-popupview";
-
- /** For server-client communication */
- private String uidlId;
- private ApplicationConnection client;
-
- /** This variable helps to communicate popup visibility to the server */
- private boolean hostPopupVisible;
-
- private final CustomPopup popup;
- private final Label loading = new Label();
-
- /**
- * loading constructor
- */
- public VPopupView() {
- super();
- popup = new CustomPopup();
-
- setStyleName(CLASSNAME);
- popup.setStyleName(CLASSNAME + "-popup");
- loading.setStyleName(CLASSNAME + "-loading");
-
- setHTML("");
- popup.setWidget(loading);
-
- // When we click to open the popup...
- addClickHandler(new ClickHandler() {
- public void onClick(ClickEvent event) {
- updateState(true);
- }
- });
-
- // ..and when we close it
- popup.addCloseHandler(new CloseHandler<PopupPanel>() {
- public void onClose(CloseEvent<PopupPanel> event) {
- updateState(false);
- }
- });
-
- popup.setAnimationEnabled(true);
- sinkEvents(VTooltip.TOOLTIP_EVENTS);
- }
-
- /**
- *
- *
- * @see com.vaadin.terminal.gwt.client.VPaintableWidget#updateFromUIDL(com.vaadin.terminal.gwt.client.UIDL,
- * com.vaadin.terminal.gwt.client.ApplicationConnection)
- */
- public void updateFromUIDL(UIDL uidl, ApplicationConnection client) {
- // This call should be made first. Ensure correct implementation,
- // and don't let the containing layout manage caption.
- if (client.updateComponent(this, uidl, false)) {
- return;
- }
- // These are for future server connections
- this.client = client;
- uidlId = uidl.getId();
-
- hostPopupVisible = uidl.getBooleanVariable("popupVisibility");
-
- setHTML(uidl.getStringAttribute("html"));
-
- if (uidl.hasAttribute("hideOnMouseOut")) {
- popup.setHideOnMouseOut(uidl.getBooleanAttribute("hideOnMouseOut"));
- }
-
- // Render the popup if visible and show it.
- if (hostPopupVisible) {
- UIDL popupUIDL = uidl.getChildUIDL(0);
-
- // showPopupOnTop(popup, hostReference);
- preparePopup(popup);
- popup.updateFromUIDL(popupUIDL, client);
- if (uidl.hasAttribute("style")) {
- final String[] styles = uidl.getStringAttribute("style").split(
- " ");
- final StringBuffer styleBuf = new StringBuffer();
- final String primaryName = popup.getStylePrimaryName();
- styleBuf.append(primaryName);
- for (int i = 0; i < styles.length; i++) {
- styleBuf.append(" ");
- styleBuf.append(primaryName);
- styleBuf.append("-");
- styleBuf.append(styles[i]);
- }
- popup.setStyleName(styleBuf.toString());
- } else {
- popup.setStyleName(popup.getStylePrimaryName());
- }
- showPopup(popup);
-
- // The popup shouldn't be visible, try to hide it.
- } else {
- popup.hide();
- }
- }// updateFromUIDL
-
- /**
- * Update popup visibility to server
- *
- * @param visibility
- */
- private void updateState(boolean visible) {
- // If we know the server connection
- // then update the current situation
- if (uidlId != null && client != null && isAttached()) {
- client.updateVariable(uidlId, "popupVisibility", visible, true);
- }
- }
-
- private void preparePopup(final CustomPopup popup) {
- popup.setVisible(false);
- popup.show();
- }
-
- /**
- * Determines the correct position for a popup and displays the popup at
- * that position.
- *
- * By default, the popup is shown centered relative to its host component,
- * ensuring it is visible on the screen if possible.
- *
- * Can be overridden to customize the popup position.
- *
- * @param popup
- */
- protected void showPopup(final CustomPopup popup) {
- int windowTop = RootPanel.get().getAbsoluteTop();
- int windowLeft = RootPanel.get().getAbsoluteLeft();
- int windowRight = windowLeft + RootPanel.get().getOffsetWidth();
- int windowBottom = windowTop + RootPanel.get().getOffsetHeight();
-
- int offsetWidth = popup.getOffsetWidth();
- int offsetHeight = popup.getOffsetHeight();
-
- int hostHorizontalCenter = VPopupView.this.getAbsoluteLeft()
- + VPopupView.this.getOffsetWidth() / 2;
- int hostVerticalCenter = VPopupView.this.getAbsoluteTop()
- + VPopupView.this.getOffsetHeight() / 2;
-
- int left = hostHorizontalCenter - offsetWidth / 2;
- int top = hostVerticalCenter - offsetHeight / 2;
-
- // Don't show the popup outside the screen.
- if ((left + offsetWidth) > windowRight) {
- left -= (left + offsetWidth) - windowRight;
- }
-
- if ((top + offsetHeight) > windowBottom) {
- top -= (top + offsetHeight) - windowBottom;
- }
-
- if (left < 0) {
- left = 0;
- }
-
- if (top < 0) {
- top = 0;
- }
-
- popup.setPopupPosition(left, top);
-
- popup.setVisible(true);
- }
-
- /**
- * Make sure that we remove the popup when the main widget is removed.
- *
- * @see com.google.gwt.user.client.ui.Widget#onUnload()
- */
- @Override
- protected void onDetach() {
- popup.hide();
- super.onDetach();
- }
-
- private static native void nativeBlur(Element e)
- /*-{
- if(e && e.blur) {
- e.blur();
- }
- }-*/;
-
- /**
- * This class is only protected to enable overriding showPopup, and is
- * currently not intended to be extended or otherwise used directly. Its API
- * (other than it being a VOverlay) is to be considered private and
- * potentially subject to change.
- */
- protected class CustomPopup extends VOverlay {
-
- private VPaintableWidget popupComponentPaintable = null;
- private Widget popupComponentWidget = null;
- private VCaptionWrapper captionWrapper = null;
-
- private boolean hasHadMouseOver = false;
- private boolean hideOnMouseOut = true;
- private final Set<Element> activeChildren = new HashSet<Element>();
- private boolean hiding = false;
-
- public CustomPopup() {
- super(true, false, true); // autoHide, not modal, dropshadow
- }
-
- // For some reason ONMOUSEOUT events are not always received, so we have
- // to use ONMOUSEMOVE that doesn't target the popup
- @Override
- public boolean onEventPreview(Event event) {
- Element target = DOM.eventGetTarget(event);
- boolean eventTargetsPopup = DOM.isOrHasChild(getElement(), target);
- int type = DOM.eventGetType(event);
-
- // Catch children that use keyboard, so we can unfocus them when
- // hiding
- if (eventTargetsPopup && type == Event.ONKEYPRESS) {
- activeChildren.add(target);
- }
-
- if (eventTargetsPopup && type == Event.ONMOUSEMOVE) {
- hasHadMouseOver = true;
- }
-
- if (!eventTargetsPopup && type == Event.ONMOUSEMOVE) {
- if (hasHadMouseOver && hideOnMouseOut) {
- hide();
- return true;
- }
- }
-
- // Was the TAB key released outside of our popup?
- if (!eventTargetsPopup && type == Event.ONKEYUP
- && event.getKeyCode() == KeyCodes.KEY_TAB) {
- // Should we hide on focus out (mouse out)?
- if (hideOnMouseOut) {
- hide();
- return true;
- }
- }
-
- return super.onEventPreview(event);
- }
-
- @Override
- public void hide(boolean autoClosed) {
- hiding = true;
- syncChildren();
- unregisterPaintables();
- if (popupComponentWidget != null && popupComponentWidget != loading) {
- remove(popupComponentWidget);
- }
- hasHadMouseOver = false;
- super.hide(autoClosed);
- }
-
- @Override
- public void show() {
- hiding = false;
- super.show();
- }
-
- /**
- * Try to sync all known active child widgets to server
- */
- public void syncChildren() {
- // Notify children with focus
- if ((popupComponentWidget instanceof Focusable)) {
- ((Focusable) popupComponentWidget).setFocus(false);
- } else {
-
- checkForRTE(popupComponentWidget);
- }
-
- // Notify children that have used the keyboard
- for (Element e : activeChildren) {
- try {
- nativeBlur(e);
- } catch (Exception ignored) {
- }
- }
- activeChildren.clear();
- }
-
- private void checkForRTE(Widget popupComponentWidget2) {
- if (popupComponentWidget2 instanceof VRichTextArea) {
- ((VRichTextArea) popupComponentWidget2)
- .synchronizeContentToServer();
- } else if (popupComponentWidget2 instanceof HasWidgets) {
- HasWidgets hw = (HasWidgets) popupComponentWidget2;
- Iterator<Widget> iterator = hw.iterator();
- while (iterator.hasNext()) {
- checkForRTE(iterator.next());
- }
- }
- }
-
- @Override
- public boolean remove(Widget w) {
-
- popupComponentPaintable = null;
- popupComponentWidget = null;
- captionWrapper = null;
-
- return super.remove(w);
- }
-
- public void updateFromUIDL(UIDL uidl, ApplicationConnection client) {
-
- VPaintableWidget newPopupComponent = client.getPaintable(uidl
- .getChildUIDL(0));
-
- if (newPopupComponent != popupComponentPaintable) {
- Widget newWidget = newPopupComponent.getWidgetForPaintable();
- setWidget(newWidget);
- popupComponentWidget = newWidget;
- popupComponentPaintable = newPopupComponent;
- }
-
- popupComponentPaintable
- .updateFromUIDL(uidl.getChildUIDL(0), client);
- }
-
- public void unregisterPaintables() {
- if (popupComponentPaintable != null) {
- client.unregisterPaintable(popupComponentPaintable);
- }
- }
-
- public void setHideOnMouseOut(boolean hideOnMouseOut) {
- this.hideOnMouseOut = hideOnMouseOut;
- }
-
- /*
- *
- * We need a hack make popup act as a child of VPopupView in Vaadin's
- * component tree, but work in default GWT manner when closing or
- * opening.
- *
- * (non-Javadoc)
- *
- * @see com.google.gwt.user.client.ui.Widget#getParent()
- */
- @Override
- public Widget getParent() {
- if (!isAttached() || hiding) {
- return super.getParent();
- } else {
- return VPopupView.this;
- }
- }
-
- @Override
- protected void onDetach() {
- super.onDetach();
- hiding = false;
- }
-
- @Override
- public Element getContainerElement() {
- return super.getContainerElement();
- }
-
- }// class CustomPopup
-
- // Container methods
-
- public RenderSpace getAllocatedSpace(Widget child) {
- Size popupExtra = calculatePopupExtra();
-
- return new RenderSpace(RootPanel.get().getOffsetWidth()
- - popupExtra.getWidth(), RootPanel.get().getOffsetHeight()
- - popupExtra.getHeight());
- }
-
- /**
- * Calculate extra space taken by the popup decorations
- *
- * @return
- */
- protected Size calculatePopupExtra() {
- Element pe = popup.getElement();
- Element ipe = popup.getContainerElement();
-
- // border + padding
- int width = Util.getRequiredWidth(pe) - Util.getRequiredWidth(ipe);
- int height = Util.getRequiredHeight(pe) - Util.getRequiredHeight(ipe);
-
- return new Size(width, height);
- }
-
- public boolean hasChildComponent(Widget component) {
- if (popup.popupComponentWidget != null) {
- return popup.popupComponentWidget == component;
- } else {
- return false;
- }
- }
-
- public void replaceChildComponent(Widget oldComponent, Widget newComponent) {
- popup.setWidget(newComponent);
- popup.popupComponentWidget = newComponent;
- }
-
- public boolean requestLayout(Set<Widget> children) {
- popup.updateShadowSizeAndPosition();
- return true;
- }
-
- public void updateCaption(VPaintableWidget component, UIDL uidl) {
- if (VCaption.isNeeded(uidl)) {
- if (popup.captionWrapper != null) {
- popup.captionWrapper.updateCaption(uidl);
- } else {
- popup.captionWrapper = new VCaptionWrapper(component, client);
- popup.setWidget(popup.captionWrapper);
- popup.captionWrapper.updateCaption(uidl);
- }
- } else {
- if (popup.captionWrapper != null) {
- popup.setWidget(popup.popupComponentWidget);
- }
- }
- }
-
- @Override
- public void onBrowserEvent(Event event) {
- super.onBrowserEvent(event);
- if (client != null) {
- client.handleTooltipEvent(event, this);
- }
- }
-
- public Iterator<Widget> iterator() {
- return new Iterator<Widget>() {
-
- int pos = 0;
-
- public boolean hasNext() {
- // There is a child widget only if next() has not been called.
- return (pos == 0);
- }
-
- public Widget next() {
- // Next can be called only once to return the popup.
- if (pos != 0) {
- throw new NoSuchElementException();
- }
- pos++;
- return popup;
- }
-
- public void remove() {
- throw new UnsupportedOperationException();
- }
-
- };
- }
-
- public Widget getWidgetForPaintable() {
- return this;
- }
-
- }// class VPopupView
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