// -- copyright
// OpenProject is a project management system.
// Copyright (C) 2012-2015 the OpenProject Foundation (OPF)
//
// This program is free software; you can redistribute it and/or
// modify it under the terms of the GNU General Public License version 3.
//
// OpenProject is a fork of ChiliProject, which is a fork of Redmine. The copyright follows:
// Copyright (C) 2006-2013 Jean-Philippe Lang
// Copyright (C) 2010-2013 the ChiliProject Team
//
// This program is free software; you can redistribute it and/or
// modify it under the terms of the GNU General Public License
// as published by the Free Software Foundation; either version 2
// of the License, or (at your option) any later version.
//
// 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 General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program; if not, write to the Free Software
// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
//
// See doc/COPYRIGHT.rdoc for more details.
// ++

import {AfterViewInit, Directive, ElementRef, Inject, Input} from '@angular/core';
import {focusHelperToken} from 'core-app/angular4-transition-utils';
import {ContextMenuService} from '../context-menu.service';

function hasDropdownMenu(contextMenu:ContextMenuService, FocusHelper:any) {
  return {
    restrict: 'A',
    link: function(scope:any, element:ng.IAugmentedJQuery, attrs:ng.IAttributes) {
      let menuName = attrs['target'];
      let locals:{ [key:string]:any } = {};
      let afterFocusOn = attrs['afterFocusOn'];
      let positionRelativeTo = attrs['positionRelativeTo'];
      let collisionContainer = attrs['collisionContainer'];
      let triggerOnEvent = (attrs['triggerOnEvent'] || 'click') + '.dropdown.openproject';

      function open(event:Event) {
        var ignoreFocusOpener = true;
        // prepare locals, these define properties to be passed on to the context menu scope
        var localKeys = (attrs['locals'] || '').split(',').map(function(local:any) {
          return local.trim();
        });
        angular.forEach(localKeys, function(key) {
          locals[key] = scope[key];
        });

        return contextMenu.activate(menuName, event, locals, {
          my: 'left top',
          at: 'left bottom',
          of: positionRelativeTo ? element.find(positionRelativeTo) : element,
          within: collisionContainer ? angular.element(collisionContainer) : window
        });
      }

      function close(ignoreFocusOpener:boolean) {
        contextMenu.close(ignoreFocusOpener).then(() => {
          if (!ignoreFocusOpener) {
            FocusHelper.focusElement(afterFocusOn ? element.find(afterFocusOn) : element);
          }
        });
      }

      Mousetrap(element[0]).bind('shift+alt+f10', (evt) => {
        open(evt);
      });

      element.on(triggerOnEvent, function(event) {
        event.preventDefault();
        event.stopPropagation();
        scope.$evalAsync(() => {
          open(event).then((menuElement:any) => {
            FocusHelper.focusElement(menuElement.find('.menu-item,input').first(), true);
          });
        });

      });
    }
  };
}

angular
  .module('openproject.uiComponents')
  .directive('hasDropdownMenu', hasDropdownMenu);


@Directive({
  selector: '[hasDropdownMenu]'
})
export class HasDropdownMenuDirective implements AfterViewInit {

  @Input('hasDropdownMenu-locals') private locals:any;

  @Input('hasDropdownMenu-afterFocusOn') private afterFocusOn:string;

  @Input('hasDropdownMenu-positionRelativeTo') private positionRelativeTo:string;

  @Input('hasDropdownMenu-collisionContainer') private collisionContainer:string;

  @Input('hasDropdownMenu-triggerOnEvent') private triggerOnEvent = 'click.dropdown.openproject';

  @Input('hasDropdownMenu-target') private target:any;

  private $element:JQuery;

  private nativeElement:HTMLElement;

  constructor(elementRef:ElementRef,
              private contextMenu:ContextMenuService,
              @Inject(focusHelperToken) private FocusHelper:any) {
    this.$element = jQuery(elementRef.nativeElement);
    this.nativeElement = elementRef.nativeElement;
  }

  ngAfterViewInit():void {
    Mousetrap(this.nativeElement).bind('shift+alt+f10', (evt) => {
      this.open(evt);
    });

    this.$element.on(this.triggerOnEvent, (event) => {
      event.preventDefault();
      event.stopPropagation();

      this.open(event).then((menuElement:any) => {
        this.FocusHelper.focusElement(menuElement.find('.menu-item,input').first(), true);
      });

    });
  }

  open(event:ExtendedKeyboardEvent | JQueryEventObject) {
    var ignoreFocusOpener = true;
    return this.contextMenu.activate(this.target, event, this.locals, {
      my: 'left top',
      at: 'left bottom',
      of: this.positionRelativeTo ? this.$element.find(this.positionRelativeTo) : this.$element,
      within: this.collisionContainer ? angular.element(this.collisionContainer) : window
    });
  }

}