Java tutorial
/********************************************************************************* * Ephesoft is a Intelligent Document Capture and Mailroom Automation program * developed by Ephesoft, Inc. Copyright (C) 2015 Ephesoft Inc. * * This program is free software; you can redistribute it and/or modify it under * the terms of the GNU Affero General Public License version 3 as published by the * Free Software Foundation with the addition of the following permission added * to Section 15 as permitted in Section 7(a): FOR ANY PART OF THE COVERED WORK * IN WHICH THE COPYRIGHT IS OWNED BY EPHESOFT, EPHESOFT DISCLAIMS THE WARRANTY * OF NON INFRINGEMENT OF THIRD PARTY RIGHTS. * * This program is distributed in the hope that it will be useful, but WITHOUT * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS * FOR A PARTICULAR PURPOSE. See the GNU Affero General Public License for more * details. * * You should have received a copy of the GNU Affero General Public License along with * this program; if not, see http://www.gnu.org/licenses or write to the Free * Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA * 02110-1301 USA. * * You can contact Ephesoft, Inc. headquarters at 111 Academy Way, * Irvine, CA 92617, USA. or at email address info@ephesoft.com. * * The interactive user interfaces in modified source and object code versions * of this program must display Appropriate Legal Notices, as required under * Section 5 of the GNU Affero General Public License version 3. * * In accordance with Section 7(b) of the GNU Affero General Public License version 3, * these Appropriate Legal Notices must retain the display of the "Ephesoft" logo. * If the display of the logo is not reasonably feasible for * technical reasons, the Appropriate Legal Notices must display the words * "Powered by Ephesoft". ********************************************************************************/ package com.ephesoft.gxt.rv.client.view; import java.util.List; import com.ephesoft.dcma.batch.schema.Document; import com.ephesoft.gxt.core.client.ui.widget.util.HTMLDomUtil; import com.ephesoft.gxt.core.client.util.WidgetUtil; import com.ephesoft.gxt.core.shared.util.CollectionUtil; import com.ephesoft.gxt.rv.client.constant.locale.LocaleConstant; import com.ephesoft.gxt.rv.client.controller.ReviewValidateController.ReviewValidateEventBus; import com.ephesoft.gxt.rv.client.event.DefaultDocumentOpenEvent; import com.ephesoft.gxt.rv.client.presenter.DocumentTreePresenter; import com.ephesoft.gxt.rv.client.widget.DocumentTree; import com.ephesoft.gxt.rv.client.widget.ThumbnailWidgetPanel; import com.google.gwt.core.client.GWT; import com.google.gwt.dom.client.Style.Unit; import com.google.gwt.event.dom.client.ClickEvent; import com.google.gwt.event.dom.client.ScrollEvent; import com.google.gwt.event.dom.client.ScrollHandler; import com.google.gwt.uibinder.client.UiBinder; import com.google.gwt.uibinder.client.UiField; import com.google.gwt.uibinder.client.UiHandler; import com.google.gwt.user.client.Window; import com.google.gwt.user.client.ui.Button; import com.google.gwt.user.client.ui.ScrollPanel; import com.google.gwt.user.client.ui.VerticalPanel; import com.sencha.gxt.core.client.GXT; import com.sencha.gxt.widget.core.client.Component; import com.sencha.gxt.widget.core.client.ContentPanel; public class DocumentTreeView extends ReviewValidateBaseView<DocumentTreePresenter> { interface Binder extends UiBinder<Component, DocumentTreeView> { } private static final Binder binder = GWT.create(Binder.class); @UiField protected Button draggableImageSwitchButton; @UiField protected ScrollPanel treeScroll; @UiField protected DocumentTree documentTree; @UiField protected VerticalPanel documentViewPanel; @UiField protected ContentPanel documentTreeHeader; private boolean treeScrollVisible = true; @Override public void initialize() { } public DocumentTreeView() { initWidget(binder.createAndBindUi(this)); documentTreeHeader.addStyleName("documentTreeHeader"); documentTree.addStyleName("thumbnail-tree"); draggableImageSwitchButton.addStyleName("iconButton"); draggableImageSwitchButton.addStyleName("dragPanelSwitch"); WidgetUtil.setID(draggableImageSwitchButton, "v-review-Panel-Button"); draggableImageSwitchButton.setTitle(LocaleConstant.DOCUMENT_PAGE_VIEW_TITLE); if (GXT.isIE()) { int clientHeight = Window.getClientHeight(); documentTree.setHeight((clientHeight - 70) + Unit.PX.getType()); } if (HTMLDomUtil.isIE11()) { documentViewPanel.addStyleName("documentViewIE11"); treeScroll.addStyleName("documentTreeScrollIE11"); } } public void createDocumentTree(final List<String> documentIdentifiersList) { documentTree.clear(); if (!CollectionUtil.isEmpty(documentIdentifiersList)) { ThumbnailWidgetPanel thumbnailWidgetPanel = null; int itemIndex = 0; for (final String documentIdentifier : documentIdentifiersList) { thumbnailWidgetPanel = new ThumbnailWidgetPanel(documentIdentifier); documentTree.addThumbnail(thumbnailWidgetPanel); this.addLazyLoadHandler(itemIndex, thumbnailWidgetPanel); itemIndex++; } ReviewValidateEventBus.fireEvent(new DefaultDocumentOpenEvent()); } } public void addLazyLoadHandler(final int itemIndex, final ThumbnailWidgetPanel thumbnailPanel) { if (itemIndex < 3 && thumbnailPanel.getDocument() == null) { presenter.loadThumbnail(thumbnailPanel); } else { treeScroll.addScrollHandler(new ScrollHandler() { @Override public void onScroll(final ScrollEvent event) { final int thumbnailTop = thumbnailPanel.getAbsoluteTop(); final int scrollPanelViewPort = treeScroll.getAbsoluteTop() + treeScroll.getOffsetHeight(); if (thumbnailTop < scrollPanelViewPort && thumbnailPanel.getDocument() == null && thumbnailTop > treeScroll.getAbsoluteTop()) { presenter.loadThumbnail(thumbnailPanel); } } }); } } public void openDocument(final String documentIdentifier) { documentTree.selectThumbnail(documentIdentifier); } public void addThumbnail(final ThumbnailWidgetPanel thumbnailPanel, final int index) { documentTree.addThumbnail(thumbnailPanel, index); } public void refreshDocument(final String docIdentifier) { documentTree.refreshDocument(docIdentifier); } public void updateDocument(final Document document) { documentTree.updateDocument(document); } public void scrollInToView(final Document document) { documentTree.scrollInToView(document); } public ThumbnailWidgetPanel getThumbnailStackPanel(final String documentIdentifier) { return documentTree.getThumbnailStackPanel(documentIdentifier); } public void removeDocument(final String documentIdentifier) { documentTree.removeDocument(documentIdentifier); } public void setValidDocumentType(final String documentIdentifier, final boolean isValid) { documentTree.setValidDocumentType(documentIdentifier, isValid); } public void setDocumentType(final String documentIdentifier, final String documentType) { documentTree.setDocumentType(documentIdentifier, documentType); } @UiHandler("draggableImageSwitchButton") public void addTreeViewToggleHandler(final ClickEvent clickEvent) { if (treeScrollVisible) { documentViewPanel.remove(treeScroll); documentViewPanel.add(presenter.getReviewDetailView()); } else { documentViewPanel.add(treeScroll); documentViewPanel.remove(presenter.getReviewDetailView()); fireScrollEventToLoadDocument(); } treeScrollVisible = !treeScrollVisible; } public void resetView() { documentViewPanel.add(treeScroll); documentViewPanel.remove(presenter.getReviewDetailView()); treeScrollVisible = true; } public void fireScrollEventToLoadDocument() { treeScroll.setVerticalScrollPosition(treeScroll.getVerticalScrollPosition() - 1); treeScroll.setVerticalScrollPosition(treeScroll.getVerticalScrollPosition() + 1); } public void setEnableDragImageSwitch(final boolean enabled) { draggableImageSwitchButton.setVisible(enabled); } }