content: /*
   * This library is part of OpenCms -
   * the Open Source Content Management System
   *
   * Copyright (c) Alkacon Software GmbH & Co. KG (https://www.alkacon.com)
   *
   * This library is free software; you can redistribute it and/or
   * modify it under the terms of the GNU Lesser General Public
   * License as published by the Free Software Foundation; either
   * version 2.1 of the License, or (at your option) any later version.
   *
   * This library 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
   * Lesser General Public License for more details.
   *
   * For further information about Alkacon Software, please see the
   * company website: https://www.alkacon.com
   *
   * For further information about OpenCms, please see the
   * project website: https://www.opencms.org
   *
   * You should have received a copy of the GNU Lesser General Public
   * License along with this library; if not, write to the Free Software
   * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
   */
  
  package org.opencms.ade.galleries.client.preview;
  
  import org.opencms.ade.galleries.client.preview.ui.CmsImagePreviewDialog;
  import org.opencms.ade.galleries.client.ui.CmsGalleryDialog;
  import org.opencms.ade.galleries.shared.CmsImageInfoBean;
  import org.opencms.ade.galleries.shared.I_CmsImagePreviewProvider;
  import org.opencms.gwt.client.CmsCoreProvider;
  import org.opencms.gwt.client.rpc.CmsRpcAction;
  import org.opencms.gwt.client.util.I_CmsSimpleCallback;
  import org.opencms.util.CmsUUID;
  
  import java.util.HashMap;
  import java.util.Map;
  
  import com.google.gwt.user.client.Command;
  import com.google.gwt.user.client.ui.FlowPanel;
  
  /**
   * The image resource preview.<p>
   *
   * @since 8.0.0
   */
  public final class CmsImageResourcePreview extends A_CmsResourcePreview<CmsImageInfoBean> {
  
      /** The image preview handler. */
      private CmsImagePreviewHandler m_handler;
  
      /** The preview dialog widget. */
      private CmsImagePreviewDialog m_previewDialog;
  
      /**
       * Constructor.<p>
       *
       * @param galleryDialog the gallery dialog
       */
      public CmsImageResourcePreview(CmsGalleryDialog galleryDialog) {
  
          super(galleryDialog);
      }
  
      /**
       * @see org.opencms.ade.galleries.client.preview.A_CmsResourcePreview#getHandler()
       */
      @Override
      public I_CmsPreviewHandler<CmsImageInfoBean> getHandler() {
  
          if (m_handler == null) {
              throw new UnsupportedOperationException("Preview handler not initialized");
          }
          return m_handler;
      }
  
      /**
       * @see org.opencms.ade.galleries.client.preview.I_CmsResourcePreview#getPreviewDialog()
       */
      public CmsImagePreviewDialog getPreviewDialog() {
  
          return m_previewDialog;
      }
  
      /**
       * @see org.opencms.ade.galleries.client.preview.I_CmsResourcePreview#getPreviewName()
       */
      public String getPreviewName() {
  
          return I_CmsImagePreviewProvider.PREVIEW_NAME;
      }
  
      /**
       * @see org.opencms.ade.galleries.client.preview.A_CmsResourcePreview#getViewLink()
       */
      @Override
      public String getViewLink() {
  
          return m_infoBean.getViewLink();
      }
  
      /**
       * @see org.opencms.ade.galleries.client.preview.I_CmsResourcePreview#loadResourceInfo(java.lang.String)
       */
      public void loadResourceInfo(final String resourcePath) {
  
          CmsRpcAction<CmsImageInfoBean> action = new CmsRpcAction<CmsImageInfoBean>() {
  
              /**
               * @see org.opencms.gwt.client.rpc.CmsRpcAction#execute()
               */
              @Override
              public void execute() {
  
                  A_CmsResourcePreview.getService().getImageInfo(resourcePath, getLocale(), this);
              }
  
              /**
               * @see org.opencms.gwt.client.rpc.CmsRpcAction#onResponse(java.lang.Object)
               */
              @Override
              protected void onResponse(CmsImageInfoBean result) {
  
                  result.setSelectedPath(resourcePath);
                  result.setViewLink(result.getViewLink());
                  showData(result);
              }
          };
          action.execute();
  
      }
  
      /**
       * @see org.opencms.ade.galleries.client.preview.I_CmsResourcePreview#openPreview(java.lang.String, boolean)
       */
      public void openPreview(String resourcePath, boolean disableSelection) {
  
          if (m_previewDialog != null) {
              m_previewDialog.removeFromParent();
          }
          FlowPanel parentPanel = getGalleryDialog().getParentPanel();
          m_previewDialog = new CmsImagePreviewDialog(
              getGalleryDialog().getController().getDialogMode(),
              parentPanel.getOffsetHeight(),
              parentPanel.getOffsetWidth(),
              disableSelection);
          // initialize the controller and controller handler
          m_handler = new CmsImagePreviewHandler(this);
          m_previewDialog.init(m_handler);
          CmsPreviewUtil.exportFunctions(getPreviewName(), this);
          parentPanel.add(m_previewDialog);
          m_handler.getGalleryDialog().setPreviewVisible(true);
          //load preview data
          loadResourceInfo(resourcePath);
      }
  
      /**
       * @see org.opencms.ade.galleries.client.preview.A_CmsResourcePreview#removePreview()
       */
      @Override
      public void removePreview() {
  
          super.removePreview();
          m_handler = null;
      }
  
      /**
       * @see org.opencms.ade.galleries.client.preview.I_CmsResourcePreview#saveProperties(java.util.Map, com.google.gwt.user.client.Command)
       */
      public void saveProperties(final Map<String, String> properties, final Command afterSaveCallback) {
  
          CmsRpcAction<CmsImageInfoBean> action = new CmsRpcAction<CmsImageInfoBean>() {
  
              /**
               * @see org.opencms.gwt.client.rpc.CmsRpcAction#execute()
               */
              @Override
              public void execute() {
  
                  getService().updateImageProperties(getResourcePath(), getLocale(), properties, this);
              }
  
              /**
               * @see org.opencms.gwt.client.rpc.CmsRpcAction#onResponse(java.lang.Object)
               */
              @Override
              protected void onResponse(CmsImageInfoBean result) {
  
                  showData(result);
                  if (afterSaveCallback != null) {
                      afterSaveCallback.execute();
                  }
              }
          };
          action.execute();
  
      }
  
      /**
       * @see org.opencms.ade.galleries.client.preview.A_CmsResourcePreview#selectResource(java.lang.String, org.opencms.util.CmsUUID, java.lang.String)
       */
      @Override
      public void selectResource(final String resourcePath, final CmsUUID structureId, final String title) {
  
          switch (getGalleryMode()) {
              case widget:
                  getInitialCroppingParameter(resourcePath, new I_CmsSimpleCallback<CmsCroppingParamBean>() {
  
                      public void execute(CmsCroppingParamBean param) {
  
                          if (getGalleryDialog().getWidgetHandler() != null) {
                              getGalleryDialog().getWidgetHandler().setWidgetValue(resourcePath, structureId, param);
                          } else {
                              if (CmsPreviewUtil.isAdvancedWidget()) {
                                  CmsPreviewUtil.setVfsImage(
                                      resourcePath,
                                      param.getScaleParam(false),
                                      param.getFormatName(),
                                      param.getRatio() + "");
                              } else {
                                  CmsPreviewUtil.setResourcePath(
                                      resourcePath
                                          + ((param.isCropped() || param.isScaled()) ? "?" + param.toString() : ""));
                              }
                          }
                      }
                  });
  
                  break;
              case editor:
                  getInitialCroppingParameter(resourcePath, new I_CmsSimpleCallback<CmsCroppingParamBean>() {
  
                      public void execute(CmsCroppingParamBean param) {
  
                          Map<String, String> attributes = new HashMap<String, String>();
                          attributes.put("title", title);
                          attributes.put("width", String.valueOf(param.getResultingWidth()));
                          attributes.put("height", String.valueOf(param.getResultingHeight()));
                          CmsPreviewUtil.setImage(
                              CmsCoreProvider.get().link(resourcePath)
                                  + (param.isScaled() ? "?" + param.toString() + ",c:transparent" : ""),
                              attributes);
                          CmsPreviewUtil.closeDialog();
                      }
                  });
                  break;
              case ade:
              case view:
              case adeView:
              default:
                  //nothing to do here, should not be called
                  break;
          }
      }
  
      /**
       * @see org.opencms.ade.galleries.client.preview.A_CmsResourcePreview#setResource()
       */
      @Override
      public void setResource() {
  
          if (m_handler == null) {
              throw new UnsupportedOperationException("Preview handler not initialized");
          }
          final CmsCroppingParamBean croppingParam = m_handler.getCroppingParam();
  
          switch (getGalleryMode()) {
              case widget:
                  if (getGalleryDialog().getWidgetHandler() != null) {
                      getGalleryDialog().getWidgetHandler().setWidgetValue(
                          m_infoBean.getResourcePath(),
                          m_infoBean.getStructureId(),
                          croppingParam);
                  } else {
                      if (CmsPreviewUtil.isAdvancedWidget()) {
                          CmsPreviewUtil.setVfsImage(
                              m_infoBean.getResourcePath(),
                              croppingParam.getScaleParam(false),
                              croppingParam.getFormatName(),
                              croppingParam.getRatio() + "");
                      } else {
                          CmsPreviewUtil.setResourcePath(
                              m_infoBean.getResourcePath()
                                  + ((croppingParam.isCropped() || croppingParam.isScaled())
                                  ? "?" + croppingParam.toString()
                                  : ""));
                      }
                  }
                  break;
              case editor:
                  m_handler.getImageAttributes(new I_CmsSimpleCallback<Map<String, String>>() {
  
                      public void execute(Map<String, String> attributes) {
  
                          CmsPreviewUtil.setImage(
                              CmsCoreProvider.get().link(
                                  m_infoBean.getResourcePath()
                                      + ((croppingParam.isCropped() || croppingParam.isScaled())
                                      ? "?" + croppingParam.toString() + ",c:transparent"
                                      : "")),
                              attributes);
                      }
                  });
  
                  break;
              case ade:
              case view:
              case adeView:
              default:
                  //nothing to do here, should not be called
                  break;
          }
      }
  
      /**
       * Returns the image info bean for the given resource.<p>
       *
       * @param resourcePath the resource path
       * @param callback the calback to execute
       */
      private void getImageInfo(final String resourcePath, final I_CmsSimpleCallback<CmsImageInfoBean> callback) {
  
          CmsRpcAction<CmsImageInfoBean> action = new CmsRpcAction<CmsImageInfoBean>() {
  
              /**
               * @see org.opencms.gwt.client.rpc.CmsRpcAction#execute()
               */
              @Override
              public void execute() {
  
                  start(0, true);
                  A_CmsResourcePreview.getService().getImageInfo(resourcePath, getLocale(), this);
  
              }
  
              /**
               * @see org.opencms.gwt.client.rpc.CmsRpcAction#onResponse(java.lang.Object)
               */
              @Override
              protected void onResponse(CmsImageInfoBean result) {
  
                  stop(false);
                  callback.execute(result);
              }
          };
          action.execute();
      }
  
      /**
       * Returns the initial cropping parameter bean for a given resource.<p>
       *
       * @param resourcePath the resource path
       * @param callback the callback to execute
       */
      private void getInitialCroppingParameter(
          final String resourcePath,
          final I_CmsSimpleCallback<CmsCroppingParamBean> callback) {
  
          getImageInfo(resourcePath, new I_CmsSimpleCallback<CmsImageInfoBean>() {
  
              public void execute(CmsImageInfoBean imageInfo) {
  
                  CmsImageFormatHandler formatHandler = new CmsImageFormatHandler(
                      getGalleryMode(),
                      getGalleryDialog(),
                      resourcePath,
                      imageInfo.getHeight(),
                      imageInfo.getWidth());
                  CmsCroppingParamBean param = formatHandler.getCroppingParam();
                  if (formatHandler.isUseFormats()) {
                      formatHandler.getFormats().values().iterator().next().adjustCroppingParam(param);
                  }
                  callback.execute(param);
              }
          });
  
      }
  }
  