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SessionPresenterView.java
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SessionPresenterView.java
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/*
* Copyright 2017 Red Hat, Inc. and/or its affiliates.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.kie.workbench.common.stunner.client.widgets.presenters.session.impl;
import java.util.concurrent.atomic.AtomicBoolean;
import javax.annotation.PostConstruct;
import javax.enterprise.context.Dependent;
import javax.enterprise.event.Observes;
import javax.inject.Inject;
import com.google.gwt.dom.client.Style;
import com.google.gwt.event.dom.client.ContextMenuEvent;
import com.google.gwt.event.dom.client.ScrollEvent;
import com.google.gwt.event.shared.HandlerRegistration;
import com.google.gwt.safehtml.shared.SafeHtmlBuilder;
import com.google.gwt.user.client.Timer;
import com.google.gwt.user.client.ui.Composite;
import com.google.gwt.user.client.ui.IsWidget;
import com.google.gwt.user.client.ui.Panel;
import org.gwtbootstrap3.client.ui.constants.IconType;
import org.gwtbootstrap3.client.ui.gwt.FlowPanel;
import org.gwtbootstrap3.extras.animate.client.ui.constants.Animation;
import org.gwtbootstrap3.extras.notify.client.constants.NotifyType;
import org.gwtbootstrap3.extras.notify.client.ui.Notify;
import org.gwtbootstrap3.extras.notify.client.ui.NotifySettings;
import org.jboss.errai.common.client.ui.ElementWrapperWidget;
import org.jboss.errai.ui.client.local.spi.TranslationService;
import org.jboss.errai.ui.shared.api.annotations.DataField;
import org.jboss.errai.ui.shared.api.annotations.EventHandler;
import org.jboss.errai.ui.shared.api.annotations.ForEvent;
import org.jboss.errai.ui.shared.api.annotations.Templated;
import org.kie.workbench.common.stunner.client.widgets.palette.PaletteWidget;
import org.kie.workbench.common.stunner.client.widgets.presenters.session.SessionPresenter;
import org.kie.workbench.common.stunner.core.client.canvas.event.selection.CanvasFocusedShapeEvent;
import org.kie.workbench.common.stunner.core.client.components.palette.PaletteDefinition;
import org.uberfire.client.workbench.widgets.listbar.ResizeFlowPanel;
import static com.google.gwt.dom.client.Style.Display.BLOCK;
import static com.google.gwt.dom.client.Style.Display.NONE;
import static org.kie.workbench.common.stunner.client.widgets.resources.i18n.StunnerWidgetsConstants.SessionPresenterView_Error;
import static org.kie.workbench.common.stunner.client.widgets.resources.i18n.StunnerWidgetsConstants.SessionPresenterView_Info;
import static org.kie.workbench.common.stunner.client.widgets.resources.i18n.StunnerWidgetsConstants.SessionPresenterView_Warning;
// TODO: i18n.
@Dependent
@Templated
public class SessionPresenterView extends Composite
implements SessionPresenter.View {
protected static final int DELAY = 3000;
protected static final int NOTIFICATION_LOCK_TIMEOUT = DELAY + 1000;
@Inject
@DataField
private FlowPanel sessionHeaderContainer;
@Inject
@DataField
private FlowPanel toolbarPanel;
@Inject
@DataField
private ResizeFlowPanel canvasPanel;
@Inject
@DataField
private FlowPanel palettePanel;
@Inject
@DataField
private SessionContainer sessionContainer;
@Inject
private TranslationService translationService;
private final NotifySettings settings = NotifySettings.newSettings();
private ScrollType scrollType = ScrollType.AUTO;
private double paletteInitialTop;
private double paletteInitialLeft;
private double headerInitialTop;
private double headerInitialLeft;
private double sessionHeaderHeight;
private HandlerRegistration handlerRegistration;
private final AtomicBoolean notifying = new AtomicBoolean(false);
@PostConstruct
public void init() {
settings.setShowProgressbar(false);
settings.setPauseOnMouseOver(true);
settings.setNewestOnTop(true);
settings.setAllowDismiss(true);
settings.setDelay(DELAY);
settings.setAnimation(Animation.NO_ANIMATION, Animation.FADE_OUT);
handlerRegistration = addDomHandler((e) -> {
e.preventDefault();
e.stopPropagation();
},
ContextMenuEvent.getType());
addAttachHandler(event -> {
if (event.isAttached()) {
getElement().getParentElement().getStyle().setHeight(100.0, Style.Unit.PCT);
getElement().getParentElement().getStyle().setWidth(100.0, Style.Unit.PCT);
}
});
//getting initial palette position
paletteInitialTop = palettePanel.getAbsoluteTop();
paletteInitialLeft = palettePanel.getAbsoluteLeft();
//getting initial session header section position
headerInitialTop = sessionHeaderContainer.getAbsoluteTop();
headerInitialLeft = sessionHeaderContainer.getAbsoluteLeft();
}
@EventHandler("sessionContainer")
protected void onScroll(@ForEvent("scroll") ScrollEvent e) {
// on the editor scroll recalculate palette and header positions to be fixed on the screen
palettePanel.getElement().getStyle().setTop(paletteInitialTop + e.getRelativeElement().getScrollTop() + sessionHeaderHeight,
Style.Unit.PX);
palettePanel.getElement().getStyle().setLeft(paletteInitialLeft + e.getRelativeElement().getScrollLeft(),
Style.Unit.PX);
sessionHeaderContainer.getElement().getStyle().setTop(headerInitialTop + e.getRelativeElement().getScrollTop(),
Style.Unit.PX);
sessionHeaderContainer.getElement().getStyle().setLeft(headerInitialLeft + e.getRelativeElement().getScrollLeft(),
Style.Unit.PX);
e.preventDefault();
}
void onCanvasFocusedSelectionEvent(final @Observes CanvasFocusedShapeEvent event) {
getSessionContainer().getElement().setScrollLeft(event.getX());
getSessionContainer().getElement().setScrollTop(event.getY());
}
SessionContainer getSessionContainer() {
return sessionContainer;
}
@Override
public IsWidget getCanvasWidget() {
return canvasPanel.getWidget(0);
}
@Override
public IsWidget getToolbarWidget() {
return toolbarPanel.getWidget(0);
}
@Override
public IsWidget getSessionHeaderContainer() {
return sessionHeaderContainer.getWidget(0);
}
@Override
public IsWidget getPaletteWidget() {
return palettePanel.getWidget(0);
}
@Override
public ScrollType getContentScrollType() {
return scrollType;
}
@Override
public SessionPresenterView setToolbarWidget(final IsWidget widget) {
setWidgetForPanel(toolbarPanel,
widget);
return this;
}
@Override
public SessionPresenterView setSessionHeaderContainer(final IsWidget widget) {
setWidgetForPanel(sessionHeaderContainer, widget);
return this;
}
@Override
public SessionPresenterView setPaletteWidget(final PaletteWidget<PaletteDefinition> paletteWidget) {
setWidgetForPanel(palettePanel,
ElementWrapperWidget.getWidget(paletteWidget.getElement()));
return this;
}
@Override
public SessionPresenterView setCanvasWidget(final IsWidget widget) {
setWidgetForPanel(canvasPanel,
widget);
return this;
}
@Override
public void setContentScrollType(final ScrollType type) {
final Style style = sessionContainer.getElement().getStyle();
switch (type) {
case AUTO:
style.setOverflow(Style.Overflow.AUTO);
break;
case CUSTOM:
style.setOverflow(Style.Overflow.HIDDEN);
}
}
@Override
public SessionPresenterView showError(final String message) {
getSettings().setType(kieNotificationCssClass(NotifyType.DANGER));
showNotification(translate(SessionPresenterView_Error), message, IconType.EXCLAMATION_CIRCLE);
return this;
}
@Override
public void showSessionHeaderContainer(final int sessionHeaderHeight) {
this.sessionHeaderHeight = sessionHeaderHeight;
sessionHeaderContainer.getElement().getStyle().setDisplay(BLOCK);
onResize();
}
@Override
public void hideSessionHeaderContainer() {
this.sessionHeaderHeight = 0;
sessionHeaderContainer.getElement().getStyle().setDisplay(NONE);
onResize();
}
@Override
public SessionPresenter.View showWarning(final String message) {
singleNotify(() -> {
getSettings().setType(kieNotificationCssClass(NotifyType.WARNING));
showNotification(translate(SessionPresenterView_Warning),
message,
IconType.EXCLAMATION_TRIANGLE);
});
return this;
}
//show only one notification at a time
private void singleNotify(final Runnable notification) {
//check if any other notification is ongoing and set a lock
if (notifying.compareAndSet(false, true)) {
//timer to remove the lock on notification
new Timer() {
@Override
public void run() {
notifying.set(false);
}
}.schedule(NOTIFICATION_LOCK_TIMEOUT);
Notify.hideAll();
notification.run();
}
}
@Override
public SessionPresenterView showMessage(final String message) {
getSettings().setType(kieNotificationCssClass(NotifyType.SUCCESS));
showNotification(translate(SessionPresenterView_Info), message, IconType.INFO_CIRCLE);
return this;
}
void showNotification(final String title,
final String message,
final IconType icon) {
Notify.notify(title,
buildHtmlEscapedText(message),
icon,
settings);
}
@Override
public void onResize() {
palettePanel.getElement().getStyle().setTop(paletteInitialTop + sessionContainer.getElement().getScrollTop() + sessionHeaderHeight,
Style.Unit.PX);
palettePanel.getElement().getStyle().setLeft(paletteInitialLeft + sessionContainer.getElement().getScrollLeft(),
Style.Unit.PX);
sessionHeaderContainer.getElement().getStyle().setTop(headerInitialTop + sessionContainer.getElement().getScrollTop(),
Style.Unit.PX);
sessionHeaderContainer.getElement().getStyle().setLeft(headerInitialLeft + sessionContainer.getElement().getScrollLeft(),
Style.Unit.PX);
canvasPanel.onResize();
}
protected void setWidgetForPanel(final Panel panel,
final IsWidget widget) {
panel.clear();
panel.add(widget);
}
public void destroy() {
handlerRegistration.removeHandler();
handlerRegistration = null;
toolbarPanel.clear();
toolbarPanel.removeFromParent();
canvasPanel.clear();
canvasPanel.removeFromParent();
palettePanel.clear();
palettePanel.removeFromParent();
sessionHeaderContainer.clear();
sessionHeaderContainer.removeFromParent();
sessionContainer.clear();
sessionContainer.removeFromParent();
this.removeFromParent();
}
NotifySettings getSettings() {
return settings;
}
TranslationService getTranslationService() {
return translationService;
}
private String translate(final String translationKey) {
return getTranslationService().getTranslation(translationKey);
}
private static String buildHtmlEscapedText(final String message) {
return new SafeHtmlBuilder().appendEscapedLines(message).toSafeHtml().asString();
}
private String kieNotificationCssClass(final NotifyType notifyType) {
return notifyType.getCssName() + " kie-session-notification";
}
}