erp5_officejs: switch bootloader from appcache to precache script

- new storage to handle precache manifests instead of appcache

bt5/erp5_officejs/PathTemplateItem/web_page_module/gadget_officejs_bootloader.html.html

@@ -9,7 +9,7 @@
     <script src="${latest_version}/rsvp.js"></script>
     <script src="${latest_version}/renderjs.js"></script>
     <script src="${latest_version}/jiodev.js"></script>
-    <script src="jio_appcachestorage.js"></script>
+    <script src="jio_precachestorage.js"></script>
 
     <script src="gadget_officejs_bootloader.js"></script>
   </head>

bt5/erp5_officejs/PathTemplateItem/web_page_module/gadget_officejs_bootloader_js.js

@@ -36,7 +36,7 @@ var repair = false;
         }
       },
       remote_sub_storage: {
-        type: "appcache",
+        type: "precache",
         manifest: gadget.props.cache_file,
         version: gadget.props.version_url,
         take_installer: true
@@ -176,4 +176,4 @@ var repair = false;
       return;
     });
 
-}(window, document, RSVP, rJS, jIO, navigator, URL));
+}(window, document, RSVP, rJS, jIO, navigator, URL));
\ No newline at end of file

bt5/erp5_officejs/PathTemplateItem/web_page_module/gadget_officejs_jio_precachestorage_js.js

+/*jslint indent:2, maxlen: 80, nomen: true */
+/*global jIO, RSVP, window, Rusha, Blob, URL, console */
+(function (window, jIO, RSVP, Rusha, Blob, URL, console) {
+  "use strict";
+
+  var rusha = new Rusha();
+
+  function PreCacheStorage(spec) {
+    this._precache_manifest_script = spec.manifest;
+    this._take_installer = spec.take_installer || false;
+    this._origin_url = spec.origin_url !== undefined ?
+        spec.origin_url : window.location.href;
+    this._version = spec.version || "";
+    this._prefix = spec.prefix || "./";
+    this._documents = {};
+    // Harcoded here, find a better way.
+    if (this._take_installer) {
+      this._relative_url_list = [
+        this._prefix,
+        this._prefix + "gadget_officejs_bootloader.js",
+        this._prefix + "gadget_officejs_bootloader.html",
+        this._prefix + "gadget_officejs_bootloader_presentation.html",
+        this._prefix + "gadget_officejs_bootloader_presentation.js",
+        this._prefix + "gadget_officejs_bootloader_presentation.css",
+        this._prefix + "gadget_officejs_bootloader_serviceworker.js",
+        this._prefix + "gadget_erp5_nojqm.css",
+        this._prefix + "officejs_logo.png",
+        this._prefix + "jio_precachestorage.js"
+      ];
+    } else {
+      this._relative_url_list = [this._prefix + "/"];
+    }
+    if (this._take_installer) {
+      this._version = 'app/';
+    }
+    this._version = this._prefix + this._version;
+  }
+
+  PreCacheStorage.prototype.get = function (id) {
+    if (this._documents.hasOwnProperty(id)) {
+      return this._documents[id];
+    }
+    throw new jIO.util.jIOError('can not find document : ' + id, 404);
+  };
+
+  PreCacheStorage.prototype.hasCapacity = function () {
+    return true;
+  };
+
+  PreCacheStorage.prototype.getAttachment = function (origin_url,
+                                                       relative_url) {
+    return new RSVP.Queue()
+      .push(function () {
+        return jIO.util.ajax({
+          type: "GET",
+          url: new URL(relative_url, origin_url),
+          dataType: "blob"
+        });
+      })
+      .push(function (result) {
+        return result.target.response;
+      });
+  };
+
+  PreCacheStorage.prototype.allAttachments = function (id) {
+    if (id === this._origin_url) {
+      var result = {}, i, len = this._relative_url_list.length;
+      for (i = 0; i < len; i += 1) {
+        result[this._relative_url_list[i]] = {};
+      }
+      return result;
+    }
+    return [];
+  };
+
+  PreCacheStorage.prototype.buildQuery = function () {
+    var result = [], id;
+    for (id in this._documents) {
+      if (this._documents.hasOwnProperty(id)) {
+        result.push({
+          'id': id,
+          'value': this._documents[id],
+          'doc': this._documents[id]
+        });
+      }
+    }
+    return result;
+  };
+
+  PreCacheStorage.prototype.repair = function () {
+    var storage = this, url;
+    return new RSVP.Queue()
+      .push(function () {
+        return jIO.util.ajax({
+          type: "GET",
+          url: new URL(storage._precache_manifest_script,
+                       new URL(storage._version, storage._origin_url))
+        });
+      })
+      .push(function (response) {
+        var base_manifest_text = response.target.responseText,
+          relative_url_list,
+          i,
+          hash = rusha.digestFromString(base_manifest_text +
+                                        response.target
+                                        .getResponseHeader("ETag"));
+        relative_url_list = Object.keys(JSON.parse(base_manifest_text));
+        storage._relative_url_list.push(storage._version);
+        storage._relative_url_list.push(storage._version +
+                                        storage._precache_manifest_script);
+        storage._documents[storage._origin_url] = {'hash': hash};
+        for (i = 0; i < relative_url_list.length; i += 1) {
+          url = relative_url_list[i];
+          if (url.includes('?')) {
+            throw new Error("It is not allow to cache urls with parameters." +
+                            " url: " + url);
+          }
+          storage._relative_url_list.push(
+            storage._version + url
+          );
+        }
+      }, function (error) {
+        if (error.target.status === 404 && !error.message) {
+          error.message = "Couldn't get the precache manifest '" +
+            storage._precache_manifest_script + "'";
+        }
+        throw error;
+      });
+  };
+
+  jIO.addStorage('precache', PreCacheStorage);
+}(window, jIO, RSVP, Rusha, Blob, URL, console));