Revert "Remove WebIDE devtools component."

This reverts commit 8c1500707f.

# Conflicts:
#	application/basilisk/components/customizableui/CustomizableUI.jsm

devtools/client/webide/modules/app-projects.js

@@ -0,0 +1,235 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+const {Cc, Ci, Cu, Cr} = require("chrome");
+const promise = require("promise");
+
+const EventEmitter = require("devtools/shared/event-emitter");
+const {generateUUID} = Cc["@mozilla.org/uuid-generator;1"].getService(Ci.nsIUUIDGenerator);
+const {FileUtils} = Cu.import("resource://gre/modules/FileUtils.jsm", {});
+
+/**
+ * IndexedDB wrapper that just save project objects
+ *
+ * The only constraint is that project objects have to have
+ * a unique `location` object.
+ */
+
+const IDB = {
+  _db: null,
+  databaseName: "AppProjects",
+
+  open: function () {
+    let deferred = promise.defer();
+
+    let request = indexedDB.open(IDB.databaseName, 5);
+    request.onerror = function (event) {
+      deferred.reject("Unable to open AppProjects indexedDB: " +
+                      this.error.name + " - " + this.error.message);
+    };
+    request.onupgradeneeded = function (event) {
+      let db = event.target.result;
+      db.createObjectStore("projects", { keyPath: "location" });
+    };
+
+    request.onsuccess = function () {
+      let db = IDB._db = request.result;
+      let objectStore = db.transaction("projects").objectStore("projects");
+      let projects = [];
+      let toRemove = [];
+      objectStore.openCursor().onsuccess = function (event) {
+        let cursor = event.target.result;
+        if (cursor) {
+          if (cursor.value.location) {
+
+            // We need to make sure this object has a `.location` property.
+            // The UI depends on this property.
+            // This should not be needed as we make sure to register valid
+            // projects, but in the past (before bug 924568), we might have
+            // registered invalid objects.
+
+
+            // We also want to make sure the location is valid.
+            // If the location doesn't exist, we remove the project.
+
+            try {
+              let file = FileUtils.File(cursor.value.location);
+              if (file.exists()) {
+                projects.push(cursor.value);
+              } else {
+                toRemove.push(cursor.value.location);
+              }
+            } catch (e) {
+              if (e.result == Cr.NS_ERROR_FILE_UNRECOGNIZED_PATH) {
+                // A URL
+                projects.push(cursor.value);
+              }
+            }
+          }
+          cursor.continue();
+        } else {
+          let removePromises = [];
+          for (let location of toRemove) {
+            removePromises.push(IDB.remove(location));
+          }
+          promise.all(removePromises).then(() => {
+            deferred.resolve(projects);
+          });
+        }
+      };
+    };
+
+    return deferred.promise;
+  },
+
+  add: function (project) {
+    let deferred = promise.defer();
+
+    if (!project.location) {
+      // We need to make sure this object has a `.location` property.
+      deferred.reject("Missing location property on project object.");
+    } else {
+      let transaction = IDB._db.transaction(["projects"], "readwrite");
+      let objectStore = transaction.objectStore("projects");
+      let request = objectStore.add(project);
+      request.onerror = function (event) {
+        deferred.reject("Unable to add project to the AppProjects indexedDB: " +
+                        this.error.name + " - " + this.error.message);
+      };
+      request.onsuccess = function () {
+        deferred.resolve();
+      };
+    }
+
+    return deferred.promise;
+  },
+
+  update: function (project) {
+    let deferred = promise.defer();
+
+    var transaction = IDB._db.transaction(["projects"], "readwrite");
+    var objectStore = transaction.objectStore("projects");
+    var request = objectStore.put(project);
+    request.onerror = function (event) {
+      deferred.reject("Unable to update project to the AppProjects indexedDB: " +
+                      this.error.name + " - " + this.error.message);
+    };
+    request.onsuccess = function () {
+      deferred.resolve();
+    };
+
+    return deferred.promise;
+  },
+
+  remove: function (location) {
+    let deferred = promise.defer();
+
+    let request = IDB._db.transaction(["projects"], "readwrite")
+                    .objectStore("projects")
+                    .delete(location);
+    request.onsuccess = function (event) {
+      deferred.resolve();
+    };
+    request.onerror = function () {
+      deferred.reject("Unable to delete project to the AppProjects indexedDB: " +
+                      this.error.name + " - " + this.error.message);
+    };
+
+    return deferred.promise;
+  }
+};
+
+var loadDeferred = promise.defer();
+
+loadDeferred.resolve(IDB.open().then(function (projects) {
+  AppProjects.projects = projects;
+  AppProjects.emit("ready", projects);
+}));
+
+const AppProjects = {
+  load: function () {
+    return loadDeferred.promise;
+  },
+
+  addPackaged: function (folder) {
+    let file = FileUtils.File(folder.path);
+    if (!file.exists()) {
+      return promise.reject("path doesn't exist");
+    }
+    let existingProject = this.get(folder.path);
+    if (existingProject) {
+      return promise.reject("Already added");
+    }
+    let project = {
+      type: "packaged",
+      location: folder.path,
+      // We need a unique id, that is the app origin,
+      // in order to identify the app when being installed on the device.
+      // The packaged app local path is a valid id, but only on the client.
+      // This origin will be used to generate the true id of an app:
+      // its manifest URL.
+      // If the app ends up specifying an explicit origin in its manifest,
+      // we will override this random UUID on app install.
+      packagedAppOrigin: generateUUID().toString().slice(1, -1)
+    };
+    return IDB.add(project).then(() => {
+      this.projects.push(project);
+      return project;
+    });
+  },
+
+  addHosted: function (manifestURL) {
+    let existingProject = this.get(manifestURL);
+    if (existingProject) {
+      return promise.reject("Already added");
+    }
+    let project = {
+      type: "hosted",
+      location: manifestURL
+    };
+    return IDB.add(project).then(() => {
+      this.projects.push(project);
+      return project;
+    });
+  },
+
+  update: function (project) {
+    return IDB.update(project);
+  },
+
+  updateLocation: function (project, newLocation) {
+    return IDB.remove(project.location)
+              .then(() => {
+                project.location = newLocation;
+                return IDB.add(project);
+              });
+  },
+
+  remove: function (location) {
+    return IDB.remove(location).then(() => {
+      for (let i = 0; i < this.projects.length; i++) {
+        if (this.projects[i].location == location) {
+          this.projects.splice(i, 1);
+          return;
+        }
+      }
+      throw new Error("Unable to find project in AppProjects store");
+    });
+  },
+
+  get: function (location) {
+    for (let i = 0; i < this.projects.length; i++) {
+      if (this.projects[i].location == location) {
+        return this.projects[i];
+      }
+    }
+    return null;
+  },
+
+  projects: []
+};
+
+EventEmitter.decorate(AppProjects);
+
+exports.AppProjects = AppProjects;