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.ui;
  
  import org.opencms.ade.galleries.client.preview.CmsCroppingParamBean;
  import org.opencms.ade.galleries.shared.I_CmsGalleryConfiguration;
  import org.opencms.file.CmsResource;
  import org.opencms.gwt.client.CmsCoreProvider;
  import org.opencms.gwt.client.ui.css.I_CmsLayoutBundle;
  import org.opencms.gwt.client.ui.input.CmsSelectBox;
  import org.opencms.gwt.client.ui.input.CmsTextArea;
  import org.opencms.gwt.client.util.CmsDomUtil;
  import org.opencms.util.CmsStringUtil;
  import org.opencms.util.CmsUUID;
  
  import java.util.LinkedHashMap;
  import java.util.Map;
  
  import com.google.gwt.event.dom.client.FocusEvent;
  import com.google.gwt.event.logical.shared.ResizeEvent;
  import com.google.gwt.event.logical.shared.ValueChangeEvent;
  import com.google.gwt.event.logical.shared.ValueChangeHandler;
  import com.google.gwt.http.client.URL;
  import com.google.gwt.uibinder.client.UiHandler;
  
  /**
   * A widget for selecting a resource from an ADE gallery dialog.<p>
   *
   * @since 8.0.0
   */
  public class CmsImageGalleryField extends CmsGalleryField {
  
      /** Parameter to split or generate the value string. */
      private static final String PARAMETER_DESC = "description=";
  
      /** Parameter to split or generate the value string. */
      private static final String PARAMETER_FORMAT = "format=";
  
      /** Parameter to split or generate the value string. */
      private static final String PARAMETER_SCALE = "scale=";
  
      /** The text area. */
      protected CmsTextArea m_descriptionArea;
  
      /** The select box. */
      protected CmsSelectBox m_formatSelection;
  
      /** Map of values for the Formats selection box. */
      Map<String, String> m_formats = new LinkedHashMap<String, String>();
  
      /** The description value. */
      private String m_description;
  
      /** The scale values. */
      private String m_scaleValue;
  
      /** The selected format. */
      private String m_selectedFormat;
  
      /**
       * Constructs a new gallery widget.<p>
       *
       * @param configuration the gallery configuration
       * @param allowUploads states if the upload button should be enabled for this widget
       */
      public CmsImageGalleryField(I_CmsGalleryConfiguration configuration, boolean allowUploads) {
  
          super(configuration, allowUploads);
          setHasImage(true);
          m_descriptionArea = new CmsTextArea();
  
          m_descriptionArea.addStyleName(
              org.opencms.ade.galleries.client.ui.css.I_CmsLayoutBundle.INSTANCE.galleryFieldCss().descriptionField());
          m_descriptionArea.getTextArea().setStyleName(I_CmsLayoutBundle.INSTANCE.globalWidgetCss().textAreaBox());
          m_descriptionArea.getTextAreaContainer().addStyleName(
              I_CmsLayoutBundle.INSTANCE.globalWidgetCss().textAreaBoxPanel());
          m_descriptionArea.setRows(3);
          m_descriptionArea.getTextAreaContainer().onResizeDescendant();
          m_formatSelection = new CmsSelectBox();
          m_formatSelection.addStyleName(
              org.opencms.ade.galleries.client.ui.css.I_CmsLayoutBundle.INSTANCE.galleryFieldCss().formats());
          m_formatSelection.getOpener().addStyleName(I_CmsLayoutBundle.INSTANCE.globalWidgetCss().selectBoxSelected());
          m_formatSelection.getSelectorPopup().addStyleName(
              I_CmsLayoutBundle.INSTANCE.globalWidgetCss().selectBoxPopup());
          ValueChangeHandler<String> changeHandler = new ValueChangeHandler<String>() {
  
              public void onValueChange(ValueChangeEvent<String> event) {
  
                  fireChange(false);
              }
          };
          addToMain(m_formatSelection);
          addToMain(m_descriptionArea);
          m_descriptionArea.addValueChangeHandler(changeHandler);
          m_formatSelection.addValueChangeHandler(changeHandler);
          generatesFormatSelection();
          m_resourceInfoPanel.setVisible(false);
          addStyleName(org.opencms.ade.galleries.client.ui.css.I_CmsLayoutBundle.INSTANCE.galleryFieldCss().hasImage());
      }
  
      /**
       * Initializes this class.<p>
       */
      public static void initClass() {
  
          // do nothing
      }
  
      /**
       * @see org.opencms.gwt.client.ui.input.I_CmsFormWidget#getFormValueAsString()
       */
      @Override
      public String getFormValueAsString() {
  
          String result = m_textbox.getValue().trim();
          // only append the other field values if a link is set
          if (CmsStringUtil.isNotEmptyOrWhitespaceOnly(result)) {
              result += "?__" + PARAMETER_SCALE + m_scaleValue;
              if (m_configuration.isUseFormats()) {
                  result += "&" + PARAMETER_FORMAT + m_formatSelection.getFormValueAsString();
                  m_selectedFormat = m_formatSelection.getFormValueAsString();
              }
              result += "&" + PARAMETER_DESC + URL.encode(m_descriptionArea.getFormValueAsString());
              m_description = m_descriptionArea.getFormValueAsString();
          }
          return result;
      }
  
      /**
       * On select box value change.<p>
       *
       * @param event the event
       */
      @UiHandler("m_formatSelection")
      public void onSelectBoxChange(ValueChangeEvent<String> event) {
  
          fireChange(false);
      }
  
      /**
       * On textarea box value change.<p>
       *
       * @param event the event
       */
      @UiHandler("m_descriptionArea")
      public void onTextAreaBoxChange(ValueChangeEvent<String> event) {
  
          fireChange(false);
      }
  
      /**
       * On textarea box resize.<p>
       *
       * @param event the event
       */
      @UiHandler("m_descriptionArea")
      public void onTextAreaBoxResize(ResizeEvent event) {
  
          ResizeEvent.fire(this, event.getWidth(), event.getHeight());
      }
  
      /**
       * Sets the name of the input field.<p>
       *
       * @param name of the input field
       * */
      @Override
      public void setName(String name) {
  
          m_textbox.setName(name);
          m_descriptionArea.setName(name + "_TextArea");
  
      }
  
      /**
       * Sets the widget value.<p>
       *
       * @param value the value to set
       * @param fireEvent if the change event should be fired
       */
      @Override
      public void setValue(String value, boolean fireEvent) {
  
          value = parseValue(value);
          m_textbox.setValue(value);
          if (fireEvent) {
              fireChange(true);
          }
      }
  
      /**
       * Handles the focus event on the opener.<p>
       *
       * @param event the focus event
       */
      @UiHandler("m_descriptionArea")
      protected void onFocusDescription(FocusEvent event) {
  
          CmsDomUtil.fireFocusEvent(this);
      }
  
      /**
       * Handles the focus event on the opener.<p>
       *
       * @param event the focus event
       */
      @UiHandler("m_formatSelection")
      protected void onFocusSelect(FocusEvent event) {
  
          CmsDomUtil.fireFocusEvent(this);
      }
  
      /**
       * @see org.opencms.ade.galleries.client.ui.CmsGalleryField#setValueFromGallery(java.lang.String, org.opencms.util.CmsUUID, org.opencms.ade.galleries.client.preview.CmsCroppingParamBean)
       */
      @Override
      protected void setValueFromGallery(
          String resourcePath,
          CmsUUID structureId,
          CmsCroppingParamBean croppingParameter) {
  
          m_croppingParam = new CmsCroppingParamBean(croppingParameter);
          String path = resourcePath + "?";
          path += croppingParameter.toString();
          path += "&" + PARAMETER_FORMAT + croppingParameter.getFormatName();
          setValue(path, true);
          m_popup.hide();
      }
  
      /**
       * Generates the format select box.<p>
       **/
      private void generatesFormatSelection() {
  
          if (m_configuration.isUseFormats()) {
              String[] formats = m_configuration.getImageFormatNames().split(",");
              for (int i = 0; i < formats.length; i++) {
                  m_formats.put(formats[i].split(":")[0], formats[i].split(":")[1]);
              }
              m_formatSelection.setItems(m_formats);
          } else {
              m_formatSelection.removeFromParent();
              m_descriptionArea.setRowsGallery(4);
          }
      }
  
      /**
       * Parses the value and all its informations.<p>
       * First part is the URL of the image. The second one describes the scale of this image.<p>
       * The last one sets the selected format.<p>
       *
       * @param value that should be parsed
       *
       * @return the URL of the image without any parameters
       */
  
      private String parseValue(String value) {
  
          m_croppingParam = CmsCroppingParamBean.parseImagePath(value);
          String path = "";
          String params = "";
          if (value.indexOf("?") > -1) {
              path = value.substring(0, value.indexOf("?"));
              params = value.substring(value.indexOf("?"));
          } else {
              path = value;
          }
          int indexofscale = params.indexOf(PARAMETER_SCALE);
          if (indexofscale > -1) {
              String scal = "";
              int hasmoreValues = params.lastIndexOf("&");
              if (hasmoreValues > indexofscale) {
                  scal = params.substring(indexofscale, params.indexOf("&")).replace(PARAMETER_SCALE, "");
              } else {
                  scal = params.substring(indexofscale).replace(PARAMETER_SCALE, "");
              }
              if (!scal.equals(m_scaleValue)) {
                  m_scaleValue = scal;
              }
              params = params.replace(PARAMETER_SCALE + m_scaleValue, "");
  
          }
          int indexofformat = params.indexOf(PARAMETER_FORMAT);
          if (indexofformat > -1) {
              int hasmoreValues = params.lastIndexOf("&");
              if (hasmoreValues > indexofformat) {
                  m_selectedFormat = params.substring(indexofformat, hasmoreValues).replace(PARAMETER_FORMAT, "");
              } else {
                  m_selectedFormat = params.substring(indexofformat).replace(PARAMETER_FORMAT, "");
              }
              params = params.replace(PARAMETER_FORMAT + m_selectedFormat, "");
              m_formatSelection.selectValue(m_selectedFormat);
          }
          int indexofdescritption = params.indexOf(PARAMETER_DESC);
          if (indexofdescritption > -1) {
              int hasmoreValues = params.lastIndexOf("&");
              if (hasmoreValues > indexofdescritption) {
                  m_description = params.substring(indexofdescritption, hasmoreValues).replace(PARAMETER_DESC, "");
              } else {
                  m_description = params.substring(indexofdescritption).replace(PARAMETER_DESC, "");
              }
              params = params.replace(PARAMETER_DESC + m_description, "");
              m_description = URL.decode(m_description);
              m_descriptionArea.setFormValueAsString(m_description);
          }
          updateUploadTarget(CmsResource.getFolderPath(path));
          if (!path.isEmpty()) {
              String imageLink = CmsCoreProvider.get().link(path);
              setImagePreview(path, imageLink);
  
          } else {
              m_imagePreview.setInnerHTML("");
          }
          return path;
  
      }
  }
  