text: /*
  Copyright 2015, 2016 OpenMarket Ltd
  
  Licensed under the Apache License, Version 2.0 (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.apache.org/licenses/LICENSE-2.0
  
  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.
  */
  
  'use strict';
  
  var React = require('react');
  
  var MatrixClientPeg = require('matrix-react-sdk/lib/MatrixClientPeg');
  
  var DateUtils = require('matrix-react-sdk/lib/DateUtils');
  var filesize = require('filesize');
  
  module.exports = React.createClass({
      displayName: 'ImageView',
  
      propTypes: {
          src: React.PropTypes.string.isRequired, // the source of the image being displayed
          name: React.PropTypes.string, // the main title ('name') for the image
          link: React.PropTypes.string, // the link (if any) applied to the name of the image
          width: React.PropTypes.number, // width of the image src in pixels
          height: React.PropTypes.number, // height of the image src in pixels
          fileSize: React.PropTypes.number, // size of the image src in bytes
          onFinished: React.PropTypes.func.isRequired, // callback when the lightbox is dismissed
  
          // the event (if any) that the Image is displaying. Used for event-specific stuff like
          // redactions, senders, timestamps etc.  Other descriptors are taken from the explicit
          // properties above, which let us use lightboxes to display images which aren't associated
          // with events.
          mxEvent: React.PropTypes.object,
      },
  
      // XXX: keyboard shortcuts for managing dialogs should be done by the modal
      // dialog base class somehow, surely...
      componentDidMount: function() {
          document.addEventListener("keydown", this.onKeyDown);
      },
  
      componentWillUnmount: function() {
          document.removeEventListener("keydown", this.onKeyDown);
      },
  
      onKeyDown: function(ev) {
          if (ev.keyCode == 27) { // escape
              ev.stopPropagation();
              ev.preventDefault();
              this.props.onFinished();
          }
      },
  
      onRedactClick: function() {
          var self = this;
          MatrixClientPeg.get().redactEvent(
              this.props.mxEvent.getRoomId(), this.props.mxEvent.getId()
          ).done(function() {
              if (self.props.onFinished) self.props.onFinished();
          }, function(e) {
              var ErrorDialog = sdk.getComponent("dialogs.ErrorDialog");
              // display error message stating you couldn't delete this.
              var code = e.errcode || e.statusCode;
              Modal.createDialog(ErrorDialog, {
                  title: "Error",
                  description: "You cannot delete this image. (" + code + ")"
              });
          });
      },
  
      getName: function () {
          var name = this.props.name;
          if (name && this.props.link) {
              name = <a href={ this.props.link } target="_blank" rel="noopener">{ name }</a>;
          }
          return name;
      },
  
      render: function() {
  
  /*
          // In theory max-width: 80%, max-height: 80% on the CSS should work
          // but in practice, it doesn't, so do it manually:
  
          var width = this.props.width || 500;
          var height = this.props.height || 500;
  
          var maxWidth = document.documentElement.clientWidth * 0.8;
          var maxHeight = document.documentElement.clientHeight * 0.8;
  
          var widthFrac = width / maxWidth;
          var heightFrac = height / maxHeight;
  
          var displayWidth;
          var displayHeight;
          if (widthFrac > heightFrac) {
              displayWidth = Math.min(width, maxWidth);
              displayHeight = (displayWidth / width) * height;
          } else {
              displayHeight = Math.min(height, maxHeight);
              displayWidth = (displayHeight / height) * width;
          }
  
          var style = {
              width: displayWidth,
              height: displayHeight
          };
  */
          var style, res;
  
          if (this.props.width && this.props.height) {
              style = {
                  width: this.props.width,
                  height: this.props.height,
              };
              res = style.width + "x" + style.height + "px";
          }
  
          var size;
          if (this.props.fileSize) {
              size = filesize(this.props.fileSize);
          }
  
          var size_res;
          if (size && res) {
              size_res = size + ", " + res;
          }
          else {
              size_res = size || res;
          }
  
          var showEventMeta = !!this.props.mxEvent;
  
          var eventMeta;
          if(showEventMeta) {
              eventMeta = (<div className="mx_ImageView_metadata">
                  Uploaded on { DateUtils.formatDate(new Date(this.props.mxEvent.getTs())) } by { this.props.mxEvent.getSender() }
              </div>);
          }
  
          var eventRedact;
          if(showEventMeta) {
              eventRedact = (<div className="mx_ImageView_button" onClick={this.onRedactClick}>
                  Redact
              </div>);
          }
  
          return (
              <div className="mx_ImageView">
                  <div className="mx_ImageView_lhs">
                  </div>
                  <div className="mx_ImageView_content">
                      <img src={this.props.src} style={style}/>
                      <div className="mx_ImageView_labelWrapper">
                          <div className="mx_ImageView_label">
                              <img className="mx_ImageView_cancel" src="img/cancel-white.svg" width="18" height="18" alt="Close" onClick={ this.props.onFinished }/>
                              <div className="mx_ImageView_shim">
                              </div>
                              <div className="mx_ImageView_name">
                                  { this.getName() }
                              </div>
                              { eventMeta }
                              <a className="mx_ImageView_link" href={ this.props.src } target="_blank" rel="noopener">
                                  <div className="mx_ImageView_download">
                                          Download this file<br/>
                                           <span className="mx_ImageView_size">{ size_res }</span>
                                  </div>
                              </a>
                              { eventRedact }
                              <div className="mx_ImageView_shim">
                              </div>
                          </div>
                      </div>
                  </div>
                  <div className="mx_ImageView_rhs">
                  </div>
              </div>
          );
      }
  });
  