1 files changed, 189 insertions, 0 deletions
diff --git a/mobile/android/components/geckoview/FilePickerDelegate.sys.mjs b/mobile/android/components/geckoview/FilePickerDelegate.sys.mjs
new file mode 100644
index 0000000000..3972017b40
--- /dev/null
+++ b/mobile/android/components/geckoview/FilePickerDelegate.sys.mjs
@@ -0,0 +1,189 @@
+/* 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/. */
+
+import { GeckoViewUtils } from "resource://gre/modules/GeckoViewUtils.sys.mjs";
+
+const lazy = {};
+
+ChromeUtils.defineESModuleGetters(lazy, {
+  FileUtils: "resource://gre/modules/FileUtils.sys.mjs",
+  GeckoViewPrompter: "resource://gre/modules/GeckoViewPrompter.sys.mjs",
+});
+
+const { debug, warn } = GeckoViewUtils.initLogging("FilePickerDelegate");
+
+export class FilePickerDelegate {
+  /* ----------  nsIFilePicker  ---------- */
+  init(aParent, aTitle, aMode) {
+    if (
+      aMode === Ci.nsIFilePicker.modeGetFolder ||
+      aMode === Ci.nsIFilePicker.modeSave
+    ) {
+      throw Components.Exception("", Cr.NS_ERROR_NOT_IMPLEMENTED);
+    }
+    this._prompt = new lazy.GeckoViewPrompter(aParent);
+    this._msg = {
+      type: "file",
+      title: aTitle,
+      mode: aMode === Ci.nsIFilePicker.modeOpenMultiple ? "multiple" : "single",
+    };
+    this._mode = aMode;
+    this._mimeTypes = [];
+    this._capture = 0;
+  }
+
+  get mode() {
+    return this._mode;
+  }
+
+  appendRawFilter(aFilter) {
+    this._mimeTypes.push(aFilter);
+  }
+
+  show() {
+    throw Components.Exception("", Cr.NS_ERROR_NOT_IMPLEMENTED);
+  }
+
+  open(aFilePickerShownCallback) {
+    this._msg.mimeTypes = this._mimeTypes;
+    this._msg.capture = this._capture;
+    this._prompt.asyncShowPrompt(this._msg, result => {
+      // OK: result
+      // Cancel: !result
+      if (!result || !result.files || !result.files.length) {
+        aFilePickerShownCallback.done(Ci.nsIFilePicker.returnCancel);
+      } else {
+        this._resolveFiles(result.files, aFilePickerShownCallback);
+      }
+    });
+  }
+
+  async _resolveFiles(aFiles, aCallback) {
+    const fileData = [];
+
+    try {
+      for (const file of aFiles) {
+        const domFile = await this._getDOMFile(file);
+        fileData.push({
+          file,
+          domFile,
+        });
+      }
+    } catch (ex) {
+      warn`Error resolving files from file picker: ${ex}`;
+      aCallback.done(Ci.nsIFilePicker.returnCancel);
+      return;
+    }
+
+    this._fileData = fileData;
+    aCallback.done(Ci.nsIFilePicker.returnOK);
+  }
+
+  get file() {
+    if (!this._fileData) {
+      throw Components.Exception("", Cr.NS_ERROR_NOT_AVAILABLE);
+    }
+    const fileData = this._fileData[0];
+    if (!fileData) {
+      return null;
+    }
+    return new lazy.FileUtils.File(fileData.file);
+  }
+
+  get fileURL() {
+    return Services.io.newFileURI(this.file);
+  }
+
+  *_getEnumerator(aDOMFile) {
+    if (!this._fileData) {
+      throw Components.Exception("", Cr.NS_ERROR_NOT_AVAILABLE);
+    }
+
+    for (const fileData of this._fileData) {
+      if (aDOMFile) {
+        yield fileData.domFile;
+      }
+      yield new lazy.FileUtils.File(fileData.file);
+    }
+  }
+
+  get files() {
+    return this._getEnumerator(/* aDOMFile */ false);
+  }
+
+  _getDOMFile(aPath) {
+    if (this._prompt.domWin) {
+      return this._prompt.domWin.File.createFromFileName(aPath);
+    }
+    return File.createFromFileName(aPath);
+  }
+
+  get domFileOrDirectory() {
+    if (!this._fileData) {
+      throw Components.Exception("", Cr.NS_ERROR_NOT_AVAILABLE);
+    }
+    return this._fileData[0] ? this._fileData[0].domFile : null;
+  }
+
+  get domFileOrDirectoryEnumerator() {
+    return this._getEnumerator(/* aDOMFile */ true);
+  }
+
+  get defaultString() {
+    return "";
+  }
+
+  set defaultString(aValue) {}
+
+  get defaultExtension() {
+    return "";
+  }
+
+  set defaultExtension(aValue) {}
+
+  get filterIndex() {
+    return 0;
+  }
+
+  set filterIndex(aValue) {}
+
+  get displayDirectory() {
+    return null;
+  }
+
+  set displayDirectory(aValue) {}
+
+  get displaySpecialDirectory() {
+    return "";
+  }
+
+  set displaySpecialDirectory(aValue) {}
+
+  get addToRecentDocs() {
+    return false;
+  }
+
+  set addToRecentDocs(aValue) {}
+
+  get okButtonLabel() {
+    return "";
+  }
+
+  set okButtonLabel(aValue) {}
+
+  get capture() {
+    return this._capture;
+  }
+
+  set capture(aValue) {
+    this._capture = aValue;
+  }
+}
+
+FilePickerDelegate.prototype.classID = Components.ID(
+  "{e4565e36-f101-4bf5-950b-4be0887785a9}"
+);
+FilePickerDelegate.prototype.QueryInterface = ChromeUtils.generateQI([
+  "nsIFilePicker",
+]);