gerrit/polygerrit-ui/app/elements/gr-download-dialog.html

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Copyright (C) 2016 The Android Open Source Project

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

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Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
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<link rel="import" href="../bower_components/polymer/polymer.html">
<link rel="import" href="../bower_components/iron-input/iron-input.html">
<link rel="import" href="../behaviors/rest-client-behavior.html">
<link rel="import" href="gr-button.html">

<dom-module id="gr-download-dialog">
  <template>
    <style>
      :host {
        display: block;
        padding: 1em;
      }
      ul {
        list-style: none;
        margin-bottom: .5em;
      }
      li {
        display: inline-block;
        margin: 0;
        padding: 0;
      }
      li gr-button {
        margin-right: 1em;
      }
      label,
      input {
        display: block;
      }
      label {
        font-weight: bold;
      }
      input {
        font-family: var(--monospace-font-family);
        font-size: inherit;
        margin-bottom: .5em;
        width: 60em;
      }
      li[selected] gr-button {
        color: #000;
        font-weight: bold;
        text-decoration: none;
      }
      header {
        display: flex;
        justify-content: space-between;
      }
      main {
        border-bottom: 1px solid #ddd;
        border-top: 1px solid #ddd;
        padding: .5em;
      }
      footer {
        display: flex;
        justify-content: space-between;
        padding-top: .75em;
      }
      .closeButtonContainer {
        display: flex;
        flex: 1;
        justify-content: flex-end;
      }
      .patchFiles {
        margin-right: 2em;
      }
      .patchFiles a,
      .archives a {
        display: inline-block;
        margin-right: 1em;
      }
      .patchFiles a:last-of-type,
      .archives a:last-of-type {
        margin-right: 0;
      }
    </style>
    <header>
      <ul hidden$="[[!_schemes.length]]" hidden>
        <template is="dom-repeat" items="[[_schemes]]" as="scheme">
          <li selected$="[[_computeSchemeSelected(scheme, _selectedScheme)]]">
            <gr-button link data-scheme$="[[scheme]]" on-tap="_handleSchemeTap">
              [[scheme]]
            </gr-button>
          </li>
        </template>
      </ul>
      <span class="closeButtonContainer">
        <gr-button link on-tap="_handleCloseTap">Close</gr-button>
      </span>
    </header>
    <main hidden$="[[!_schemes.length]]" hidden>
      <template is="dom-repeat"
          items="[[_computeDownloadCommands(change, patchNum, _selectedScheme)]]"
          as="command">
        <div class="command">
          <label>[[command.title]]</label>
          <input is="iron-input"
              type="text"
              bind-value="[[command.command]]"
              on-tap="_handleInputTap"
              readonly>
        </div>
      </template>
    </main>
    <footer>
      <div class="patchFiles">
        <label>Patch file</label>
        <div>
          <a href$="[[_computeDownloadLink(change, patchNum)]]">
            [[_computeDownloadFilename(change, patchNum)]]
          </a>
          <a href$="[[_computeZipDownloadLink(change, patchNum)]]">
            [[_computeZipDownloadFilename(change, patchNum)]]
          </a>
        </div>
      </div>
      <div class="archivesContainer" hidden$="[[!config.archives.length]]" hidden>
        <label>Archive</label>
        <div class="archives">
          <template is="dom-repeat" items="[[config.archives]]" as="format">
            <a href$="[[_computeArchiveDownloadLink(change, patchNum, format)]]">
              [[format]]
            </a>
          </template>
        </div>
      </div>
    </footer>
  </template>
  <script>
  (function() {
    'use strict';

    Polymer({
      is: 'gr-download-dialog',

      /**
       * Fired when the user presses the close button.
       *
       * @event close
       */

      properties: {
        change: Object,
        patchNum: String,
        config: Object,

        _schemes: {
          type: Array,
          value: function() { return []; },
          computed: '_computeSchemes(change, patchNum)',
          observer: '_schemesChanged',
        },
        _selectedScheme: String,
      },

      hostAttributes: {
        role: 'dialog',
      },

      behaviors: [
        Gerrit.RESTClientBehavior,
      ],

      _computeDownloadCommands: function(change, patchNum, _selectedScheme) {
        var commandObj;
        for (var rev in change.revisions) {
          if (change.revisions[rev]._number == patchNum) {
            commandObj = change.revisions[rev].fetch[_selectedScheme].commands;
            break;
          }
        }
        var commands = [];
        for (var title in commandObj) {
          commands.push({
            title: title,
            command: commandObj[title],
          });
        }
        return commands;
      },

      _computeZipDownloadLink: function(change, patchNum) {
        return this._computeDownloadLink(change, patchNum, true);
      },

      _computeZipDownloadFilename: function(change, patchNum) {
        return this._computeDownloadFilename(change, patchNum, true);
      },

      _computeDownloadLink: function(change, patchNum, zip) {
        return this.changeBaseURL(change._number, patchNum) + '/patch?' +
            (zip ? 'zip' : 'download');
      },

      _computeDownloadFilename: function(change, patchNum, zip) {
        var shortRev;
        for (var rev in change.revisions) {
          if (change.revisions[rev]._number == patchNum) {
            shortRev = rev.substr(0, 7);
            break;
          }
        }
        return shortRev + '.diff.' + (zip ? 'zip' : 'base64');
      },

      _computeArchiveDownloadLink: function(change, patchNum, format) {
        return this.changeBaseURL(change._number, patchNum) +
            '/archive?format=' + format;
      },

      _computeSchemes: function(change, patchNum) {
        for (var rev in change.revisions) {
          if (change.revisions[rev]._number == patchNum) {
            var fetch = change.revisions[rev].fetch;
            if (fetch) {
              return Object.keys(fetch).sort();
            }
            break;
          }
        }
        return [];
      },

      _computeSchemeSelected: function(scheme, selectedScheme) {
        return scheme == selectedScheme;
      },

      _handleSchemeTap: function(e) {
        e.preventDefault();
        var el = Polymer.dom(e).rootTarget;
        // TODO(andybons): Save as default scheme in preferences.
        this._selectedScheme = el.getAttribute('data-scheme');
      },

      _handleInputTap: function(e) {
        e.preventDefault();
        Polymer.dom(e).rootTarget.select();
      },

      _handleCloseTap: function(e) {
        e.preventDefault();
        this.fire('close', null, {bubbles: false});
      },

      _schemesChanged: function(schemes) {
        if (schemes.length == 0) { return; }
        if (schemes.indexOf(this._selectedScheme) == -1) {
          this._selectedScheme = schemes.sort()[0];
        }
      },

    });
  })();
  </script>
</dom-module>