/*
    * Copyright 2007 The Kuali Foundation Licensed under the Educational Community
    * License, Version 1.0 (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.opensource.org/licenses/ecl1.php 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.kuali.rice.krad.uif.field;
  
  import org.apache.commons.lang.StringUtils;
  import org.kuali.rice.krad.uif.UifConstants;
  import org.kuali.rice.krad.uif.UifParameters;
  import org.kuali.rice.krad.uif.UifPropertyPaths;
  import org.kuali.rice.krad.uif.view.FormView;
  import org.kuali.rice.krad.uif.view.View;
  import org.kuali.rice.krad.uif.component.Component;
  import org.kuali.rice.krad.uif.widget.LightBox;
  
  import java.util.HashMap;
  import java.util.List;
  import java.util.Map;
  
  /**
   * Field that presents an action that can be taken on the UI such as submitting
   * the form or invoking a script
   * 
   * @author Kuali Rice Team (rice.collab@kuali.org)
   */
  public class ActionField extends FieldBase {
      private static final long serialVersionUID = 1025672792657238829L;
  
      private String methodToCall;
      private String navigateToPageId;
  
      private String clientSideJs;
  
      private String jumpToIdAfterSubmit;
      private String jumpToNameAfterSubmit;
      private String focusOnAfterSubmit;
  
      private String actionLabel;
      private ImageField actionImageField;
      private String actionImageLocation = "LEFT";
  
      private Map<String, String> actionParameters;
  
      private LightBox lightBoxLookup;
  
      private LightBox lightBoxDirectInquiry;
  
      private boolean blockValidateDirty;
  
      public ActionField() {
          super();
          actionParameters = new HashMap<String, String>();
      }
  
      /**
       * The following initialization is performed:
       * <ul>
       * <li>Set the actionLabel if blank to the Field label</li>
       * </ul>
       * 
       * @see org.kuali.rice.krad.uif.component.ComponentBase#performInitialization(org.kuali.rice.krad.uif.view.View)
       */
      @Override
      public void performInitialization(View view) {
          super.performInitialization(view);
  
          if (StringUtils.isBlank(actionLabel)) {
              actionLabel = this.getLabel();
          }
      }
  
      /**
       * The following finalization is performed:
       * <ul>
       * <li>Add methodToCall action parameter if set and setup event code for
       * setting action parameters</li>
       * </ul>
       * 
       * @see org.kuali.rice.krad.uif.component.ComponentBase#performFinalize(org.kuali.rice.krad.uif.view.View,
       *      java.lang.Object, org.kuali.rice.krad.uif.component.Component)
       */
      @Override
      public void performFinalize(View view, Object model, Component parent) {
          super.performFinalize(view, model, parent);
          //clear alt text to avoid screen reader confusion when using image in button with text
          if(actionImageField != null && StringUtils.isNotBlank(actionImageLocation) && StringUtils.isNotBlank(actionLabel)){
              actionImageField.setAltText("");
          }
  
          actionParameters.put(UifConstants.UrlParams.SHOW_HOME, "false");
          actionParameters.put(UifConstants.UrlParams.SHOW_HISTORY, "false");
  
          if (StringUtils.isNotBlank(navigateToPageId)) {
             actionParameters.put(UifParameters.NAVIGATE_TO_PAGE_ID, navigateToPageId);
             if (StringUtils.isBlank(methodToCall)) {
                 actionParameters.put(UifConstants.CONTROLLER_METHOD_DISPATCH_PARAMETER_NAME,
                         UifConstants.MethodToCallNames.NAVIGATE);
             }
         }
 
         if (!actionParameters.containsKey(UifConstants.CONTROLLER_METHOD_DISPATCH_PARAMETER_NAME)
                 && StringUtils.isNotBlank(methodToCall)) {
             actionParameters.put(UifConstants.CONTROLLER_METHOD_DISPATCH_PARAMETER_NAME, methodToCall);
         }
 
         // If there is no lightBox then create the on click script
         if (lightBoxLookup == null) {
             String prefixScript = this.getOnClickScript();
             if (prefixScript == null) {
                 prefixScript = "";
             }
 
             boolean validateFormDirty = false;
             if (view instanceof FormView && !isBlockValidateDirty()) {
                 validateFormDirty = ((FormView) view).isValidateDirty();
             }
 
             boolean includeDirtyCheckScript = false;
             String writeParamsScript = "";
             if (!actionParameters.isEmpty()) {
                 for (String key : actionParameters.keySet()) {
                     String parameterPath = key;
                     if (!key.equals(UifConstants.CONTROLLER_METHOD_DISPATCH_PARAMETER_NAME)) {
                         parameterPath = UifPropertyPaths.ACTION_PARAMETERS + "[" + key + "]";
                     }
 
                     writeParamsScript = writeParamsScript + "writeHiddenToForm('" + parameterPath + "' , '"
                             + actionParameters.get(key) + "'); ";
 
                     // Include dirtycheck js function call if the method to call
                     // is refresh, navigate, cancel or close
                     if (validateFormDirty && !includeDirtyCheckScript
                             && key.equals(UifConstants.CONTROLLER_METHOD_DISPATCH_PARAMETER_NAME)) {
                         String keyValue = (String) actionParameters.get(key);
                         if (StringUtils.equals(keyValue, UifConstants.MethodToCallNames.REFRESH)
                                 || StringUtils.equals(keyValue, UifConstants.MethodToCallNames.NAVIGATE)
                                 || StringUtils.equals(keyValue, UifConstants.MethodToCallNames.CANCEL)
                                 || StringUtils.equals(keyValue, UifConstants.MethodToCallNames.CLOSE)) {
                             includeDirtyCheckScript = true;
                         }
                     }
                 }
             }
 
             // TODO possibly fix some other way - this is a workaround, prevents
             // showing history and showing home again on actions which submit
             // the form
             writeParamsScript = writeParamsScript + "writeHiddenToForm('" + UifConstants.UrlParams.SHOW_HISTORY
                     + "', '" + "false" + "'); ";
             writeParamsScript = writeParamsScript + "writeHiddenToForm('" + UifConstants.UrlParams.SHOW_HOME + "' , '"
                     + "false" + "'); ";
 
             if (StringUtils.isBlank(focusOnAfterSubmit)) {
                 // if this is blank focus this actionField by default
                 focusOnAfterSubmit = this.getId();
                 writeParamsScript = writeParamsScript + "writeHiddenToForm('focusId' , '" + this.getId() + "'); ";
             } else if (!focusOnAfterSubmit.equalsIgnoreCase(UifConstants.Order.FIRST)) {
                 // Use the id passed in
                 writeParamsScript = writeParamsScript + "writeHiddenToForm('focusId' , '" + focusOnAfterSubmit + "'); ";
             } else {
                 // First input will be focused, must be first field set to empty
                 // string
                 writeParamsScript = writeParamsScript + "writeHiddenToForm('focusId' , ''); ";
             }
 
             if (StringUtils.isBlank(jumpToIdAfterSubmit) && StringUtils.isBlank(jumpToNameAfterSubmit)) {
                 jumpToIdAfterSubmit = this.getId();
                 writeParamsScript = writeParamsScript + "writeHiddenToForm('jumpToId' , '" + this.getId() + "'); ";
             } else if (StringUtils.isNotBlank(jumpToIdAfterSubmit)) {
                 writeParamsScript = writeParamsScript + "writeHiddenToForm('jumpToId' , '" + jumpToIdAfterSubmit
                         + "'); ";
             } else {
                 writeParamsScript = writeParamsScript + "writeHiddenToForm('jumpToName' , '" + jumpToNameAfterSubmit
                         + "'); ";
             }
 
             String postScript = "";
             if (StringUtils.isNotBlank(clientSideJs)) {
                 postScript = clientSideJs;
             } else {
                 postScript = "writeHiddenToForm('renderFullView' , 'true'); jq('#kualiForm').submit();";
             }
 
             if (includeDirtyCheckScript) {
                 this.setOnClickScript("e.preventDefault(); if (checkDirty(e) == false) { " + prefixScript
                         + writeParamsScript + postScript + " ; } ");
             } else {
                 this.setOnClickScript("e.preventDefault();" + prefixScript + writeParamsScript + postScript);
             }
 
         } else {
             // When there is a light box - don't add the on click script as it
             // will be prevented from executing
             // Create a script map object which will be written to the form on
             // click event
             StringBuffer sb = new StringBuffer();
             sb.append("{");
             for (String key : actionParameters.keySet()) {
                 String optionValue = actionParameters.get(key);
                 if (sb.length() > 1) {
                     sb.append(",");
                 }
                 if (!key.equals(UifConstants.CONTROLLER_METHOD_DISPATCH_PARAMETER_NAME)) {
                     sb.append("\"" + UifPropertyPaths.ACTION_PARAMETERS + "[" + key + "]" + "\"");
                 } else {
                     sb.append("\"" + key + "\"");
                 }
                 sb.append(":");
                 sb.append("\"" + optionValue + "\"");
             }
             sb.append("}");
             lightBoxLookup.setActionParameterMapString(sb.toString());
         }
     }
 
     /**
      * @see org.kuali.rice.krad.uif.component.ComponentBase#getNestedComponents()
      */
     @Override
     public List<Component> getNestedComponents() {
         List<Component> components = super.getNestedComponents();
 
         components.add(actionImageField);
         components.add(lightBoxLookup);
         components.add(lightBoxDirectInquiry);
 
         return components;
     }
 
     /**
      * Name of the method that should be called when the action is selected
      * <p>
      * For a server side call (clientSideCall is false), gives the name of the
      * method in the mapped controller that should be invoked when the action is
      * selected. For client side calls gives the name of the script function
      * that should be invoked when the action is selected
      * </p>
      * 
      * @return String name of method to call
      */
     public String getMethodToCall() {
         return this.methodToCall;
     }
 
     /**
      * Setter for the actions method to call
      * 
      * @param methodToCall
      */
     public void setMethodToCall(String methodToCall) {
         this.methodToCall = methodToCall;
     }
 
     /**
      * Label text for the action
      * <p>
      * The label text is used by the template renderers to give a human readable
      * label for the action. For buttons this generally is the button text,
      * while for an action link it would be the links displayed text
      * </p>
      * 
      * @return String label for action
      */
     public String getActionLabel() {
         return this.actionLabel;
     }
 
     /**
      * Setter for the actions label
      * 
      * @param actionLabel
      */
     public void setActionLabel(String actionLabel) {
         this.actionLabel = actionLabel;
     }
 
     /**
      * Image to use for the action
      * <p>
      * When the action image field is set (and render is true) the image will be
      * used to present the action as opposed to the default (input submit). For
      * action link templates the image is used for the link instead of the
      * action link text
      * </p>
      * 
      * @return ImageField action image
      */
     public ImageField getActionImageField() {
         return this.actionImageField;
     }
 
     /**
      * Setter for the action image field
      * 
      * @param actionImageField
      */
     public void setActionImageField(ImageField actionImageField) {
         this.actionImageField = actionImageField;
     }
 
     /**
      * For an <code>ActionField</code> that is part of a
      * <code>NavigationGroup</code, the navigate to page id can be set to
      * configure the page that should be navigated to when the action is
      * selected
      * <p>
      * Support exists in the <code>UifControllerBase</code> for handling
      * navigation between pages
      * </p>
      * 
      * @return String id of page that should be rendered when the action item is
      *         selected
      */
     public String getNavigateToPageId() {
         return this.navigateToPageId;
     }
 
     /**
      * Setter for the navigate to page id
      * 
      * @param navigateToPageId
      */
     public void setNavigateToPageId(String navigateToPageId) {
         this.navigateToPageId = navigateToPageId;
         actionParameters.put(UifParameters.NAVIGATE_TO_PAGE_ID, navigateToPageId);
         this.methodToCall = UifConstants.MethodToCallNames.NAVIGATE;
     }
 
     /**
      * Parameters that should be sent when the action is invoked
      * <p>
      * Action renderer will decide how the parameters are sent for the action
      * (via script generated hiddens, or script parameters, ...)
      * </p>
      * <p>
      * Can be set by other components such as the <code>CollectionGroup</code>
      * to provide the context the action is in (such as the collection name and
      * line the action applies to)
      * </p>
      * 
      * @return Map<String, String> action parameters
      */
     public Map<String, String> getActionParameters() {
         return this.actionParameters;
     }
 
     /**
      * Setter for the action parameters
      * 
      * @param actionParameters
      */
     public void setActionParameters(Map<String, String> actionParameters) {
         this.actionParameters = actionParameters;
     }
 
     /**
      * Convenience method to add a parameter to the action parameters Map
      * 
      * @param parameterName
      *            - name of parameter to add
      * @param parameterValue
      *            - value of parameter to add
      */
     public void addActionParameter(String parameterName, String parameterValue) {
         if (actionParameters == null) {
             this.actionParameters = new HashMap<String, String>();
         }
 
         this.actionParameters.put(parameterName, parameterValue);
     }
 
     /**
      * Get an actionParameter by name
      */
     public String getActionParameter(String parameterName) {
 
         return this.actionParameters.get(parameterName);
     }
 
     /**
      * @see org.kuali.rice.krad.uif.component.ComponentBase#getSupportsOnClick()
      */
     @Override
     public boolean getSupportsOnClick() {
         return true;
     }
 
     /**
      * Setter for the light box lookup widget
      * 
      * @param lightBoxLookup
      *            <code>LightBoxLookup</code> widget to set
      */
     public void setLightBoxLookup(LightBox lightBoxLookup) {
         this.lightBoxLookup = lightBoxLookup;
     }
 
     /**
      * LightBoxLookup widget for the field
      * <p>
      * The light box lookup widget will change the lookup behaviour to open the
      * lookup in a light box.
      * </p>
      * 
      * @return the <code>DirectInquiry</code> field DirectInquiry
      */
     public LightBox getLightBoxLookup() {
         return lightBoxLookup;
     }
 
     /**
      * @return the jumpToIdAfterSubmit
      */
     public String getJumpToIdAfterSubmit() {
         return this.jumpToIdAfterSubmit;
     }
 
     /**
      * The id to jump to in the next page, the element with this id will be
      * jumped to automatically when the new page is retrieved after a submit.
      * Using "TOP" or "BOTTOM" will jump to the top or the bottom of the
      * resulting page. Passing in nothing for both jumpToIdAfterSubmit and
      * jumpToNameAfterSubmit will result in this ActionField being jumped to by
      * default if it is present on the new page. WARNING: jumpToIdAfterSubmit
      * always takes precedence over jumpToNameAfterSubmit, if set.
      * 
      * @param jumpToIdAfterSubmit
      *            the jumpToIdAfterSubmit to set
      */
     public void setJumpToIdAfterSubmit(String jumpToIdAfterSubmit) {
         this.jumpToIdAfterSubmit = jumpToIdAfterSubmit;
     }
 
     /**
      * The name to jump to in the next page, the element with this name will be
      * jumped to automatically when the new page is retrieved after a submit.
      * Passing in nothing for both jumpToIdAfterSubmit and jumpToNameAfterSubmit
      * will result in this ActionField being jumped to by default if it is
      * present on the new page. WARNING: jumpToIdAfterSubmit always takes
      * precedence over jumpToNameAfterSubmit, if set.
      * 
      * @return the jumpToNameAfterSubmit
      */
     public String getJumpToNameAfterSubmit() {
         return this.jumpToNameAfterSubmit;
     }
 
     /**
      * @param jumpToNameAfterSubmit
      *            the jumpToNameAfterSubmit to set
      */
     public void setJumpToNameAfterSubmit(String jumpToNameAfterSubmit) {
         this.jumpToNameAfterSubmit = jumpToNameAfterSubmit;
     }
 
     /**
      * The id of the field to place focus on in the new page after the new page
      * is retrieved. Passing in "FIRST" will focus on the first visible input
      * element on the form. Passing in the empty string will result in this
      * ActionField being focused.
      * 
      * @return the focusOnAfterSubmit
      */
     public String getFocusOnAfterSubmit() {
         return this.focusOnAfterSubmit;
     }
 
     /**
      * @param focusOnAfterSubmit
      *            the focusOnAfterSubmit to set
      */
     public void setFocusOnAfterSubmit(String focusOnAfterSubmit) {
         this.focusOnAfterSubmit = focusOnAfterSubmit;
     }
 
     /**
      * Client side javascript to be executed when this actionField is clicked.
      * This overrides the default action for this ActionField so the method
      * called must explicitly submit, navigate, etc. through js, if necessary.
      * In addition, this js occurs AFTER onClickScripts set on this field, it
      * will be the last script executed by the click event. Sidenote: This js is
      * always called after hidden actionParameters and methodToCall methods are
      * written by the js to the html form.
      * 
      * @return the clientSideJs
      */
     public String getClientSideJs() {
         return this.clientSideJs;
     }
 
     /**
      * @param clientSideJs
      *            the clientSideJs to set
      */
     public void setClientSideJs(String clientSideJs) {
         if (!StringUtils.endsWith(clientSideJs, ";")) {
             clientSideJs = clientSideJs + ";";
         }
         this.clientSideJs = clientSideJs;
     }
 
     /**
      * Setter for the light box direct inquiry widget
      * 
      * @param lightBoxDirectInquiry
      *            <code>LightBox</code> widget to set
      */
     public void setLightBoxDirectInquiry(LightBox lightBoxDirectInquiry) {
         this.lightBoxDirectInquiry = lightBoxDirectInquiry;
     }
 
     /**
      * LightBox widget for the field
      * <p>
      * The light box widget will change the direct inquiry behaviour to open up
      * in a light box.
      * </p>
      * 
      * @return the <code>LightBox</code> field LightBox
      */
     public LightBox getLightBoxDirectInquiry() {
         return lightBoxDirectInquiry;
     }
 
     /**
      * @param blockValidateDirty
      *            the blockValidateDirty to set
      */
     public void setBlockValidateDirty(boolean blockValidateDirty) {
         this.blockValidateDirty = blockValidateDirty;
     }
 
     /**
      * @return the blockValidateDirty
      */
     public boolean isBlockValidateDirty() {
         return blockValidateDirty;
     }
 
     public String getActionImageLocation() {
         return actionImageLocation;
     }
 
     /**
      * Set to TOP, BOTTOM, LEFT, RIGHT to position image at that location within the button.
      * For the subclass ActionLinkField only LEFT and RIGHT are allowed.  When set to blank/null, the image
      * itself will be the ActionField, if no value is set the default is ALWAYS LEFT, you must explicitly set
      * blank/null to use ONLY the image as the ActionField.
      * @return
      */
     public void setActionImageLocation(String actionImageLocation) {
         this.actionImageLocation = actionImageLocation;
     }
 }