diff -r 000000000000 -r 6474c204b198 widget/xpwidgets/nsBaseFilePicker.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/widget/xpwidgets/nsBaseFilePicker.cpp	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,333 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
+ *
+ * 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/. */
+
+#include "nsCOMPtr.h"
+#include "nsPIDOMWindow.h"
+#include "nsIDocShell.h"
+#include "nsIInterfaceRequestorUtils.h"
+#include "nsIBaseWindow.h"
+#include "nsIWidget.h"
+
+#include "nsIStringBundle.h"
+#include "nsXPIDLString.h"
+#include "nsIServiceManager.h"
+#include "nsCOMArray.h"
+#include "nsIFile.h"
+#include "nsDOMFile.h"
+#include "nsEnumeratorUtils.h"
+#include "mozilla/Services.h"
+#include "WidgetUtils.h"
+#include "nsThreadUtils.h"
+
+#include "nsBaseFilePicker.h"
+
+using namespace mozilla::widget;
+
+#define FILEPICKER_TITLES "chrome://global/locale/filepicker.properties"
+#define FILEPICKER_FILTERS "chrome://global/content/filepicker.properties"
+
+/**
+ * A runnable to dispatch from the main thread to the main thread to display
+ * the file picker while letting the showAsync method return right away.
+*/
+class AsyncShowFilePicker : public nsRunnable
+{
+public:
+  AsyncShowFilePicker(nsIFilePicker *aFilePicker,
+                      nsIFilePickerShownCallback *aCallback) :
+    mFilePicker(aFilePicker),
+    mCallback(aCallback)
+  {
+  }
+
+  NS_IMETHOD Run()
+  {
+    NS_ASSERTION(NS_IsMainThread(),
+                 "AsyncShowFilePicker should be on the main thread!");
+
+    // It's possible that some widget implementations require GUI operations
+    // to be on the main thread, so that's why we're not dispatching to another
+    // thread and calling back to the main after it's done.
+    int16_t result = nsIFilePicker::returnCancel;
+    nsresult rv = mFilePicker->Show(&result);
+    if (NS_FAILED(rv)) {
+      NS_ERROR("FilePicker's Show() implementation failed!");
+    }
+
+    if (mCallback) {
+      mCallback->Done(result);
+    }
+    return NS_OK;
+  }
+
+private:
+  nsRefPtr<nsIFilePicker> mFilePicker;
+  nsRefPtr<nsIFilePickerShownCallback> mCallback;
+};
+
+class nsBaseFilePickerEnumerator : public nsISimpleEnumerator
+{
+public:
+  NS_DECL_ISUPPORTS
+
+  nsBaseFilePickerEnumerator(nsISimpleEnumerator* iterator)
+    : mIterator(iterator)
+  {}
+
+  virtual ~nsBaseFilePickerEnumerator()
+  {}
+
+  NS_IMETHOD
+  GetNext(nsISupports** aResult)
+  {
+    nsCOMPtr<nsISupports> tmp;
+    nsresult rv = mIterator->GetNext(getter_AddRefs(tmp));
+    NS_ENSURE_SUCCESS(rv, rv);
+
+    if (!tmp) {
+      return NS_OK;
+    }
+
+    nsCOMPtr<nsIFile> localFile = do_QueryInterface(tmp);
+    if (!localFile) {
+      return NS_ERROR_FAILURE;
+    }
+
+    nsCOMPtr<nsIDOMFile> domFile = new nsDOMFileFile(localFile);
+    domFile.forget(aResult);
+    return NS_OK;
+  }
+
+  NS_IMETHOD
+  HasMoreElements(bool* aResult)
+  {
+    return mIterator->HasMoreElements(aResult);
+  }
+
+private:
+  nsCOMPtr<nsISimpleEnumerator> mIterator;
+};
+
+NS_IMPL_ISUPPORTS(nsBaseFilePickerEnumerator, nsISimpleEnumerator)
+
+nsBaseFilePicker::nsBaseFilePicker()
+  : mAddToRecentDocs(true)
+  , mMode(nsIFilePicker::modeOpen)
+{
+
+}
+
+nsBaseFilePicker::~nsBaseFilePicker()
+{
+
+}
+
+NS_IMETHODIMP nsBaseFilePicker::Init(nsIDOMWindow *aParent,
+                                     const nsAString& aTitle,
+                                     int16_t aMode)
+{
+  NS_PRECONDITION(aParent, "Null parent passed to filepicker, no file "
+                  "picker for you!");
+  nsCOMPtr<nsIWidget> widget = WidgetUtils::DOMWindowToWidget(aParent);
+  NS_ENSURE_TRUE(widget, NS_ERROR_FAILURE);
+
+  mMode = aMode;
+  InitNative(widget, aTitle);
+
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsBaseFilePicker::Open(nsIFilePickerShownCallback *aCallback)
+{
+  nsCOMPtr<nsIRunnable> filePickerEvent =
+    new AsyncShowFilePicker(this, aCallback);
+  return NS_DispatchToMainThread(filePickerEvent);
+}
+
+NS_IMETHODIMP
+nsBaseFilePicker::AppendFilters(int32_t aFilterMask)
+{
+  nsCOMPtr<nsIStringBundleService> stringService =
+    mozilla::services::GetStringBundleService();
+  if (!stringService)
+    return NS_ERROR_FAILURE;
+
+  nsCOMPtr<nsIStringBundle> titleBundle, filterBundle;
+
+  nsresult rv = stringService->CreateBundle(FILEPICKER_TITLES,
+                                            getter_AddRefs(titleBundle));
+  if (NS_FAILED(rv))
+    return NS_ERROR_FAILURE;
+
+  rv = stringService->CreateBundle(FILEPICKER_FILTERS, getter_AddRefs(filterBundle));
+  if (NS_FAILED(rv))
+    return NS_ERROR_FAILURE;
+
+  nsXPIDLString title;
+  nsXPIDLString filter;
+
+  if (aFilterMask & filterAll) {
+    titleBundle->GetStringFromName(MOZ_UTF16("allTitle"), getter_Copies(title));
+    filterBundle->GetStringFromName(MOZ_UTF16("allFilter"), getter_Copies(filter));
+    AppendFilter(title,filter);
+  }
+  if (aFilterMask & filterHTML) {
+    titleBundle->GetStringFromName(MOZ_UTF16("htmlTitle"), getter_Copies(title));
+    filterBundle->GetStringFromName(MOZ_UTF16("htmlFilter"), getter_Copies(filter));
+    AppendFilter(title,filter);
+  }
+  if (aFilterMask & filterText) {
+    titleBundle->GetStringFromName(MOZ_UTF16("textTitle"), getter_Copies(title));
+    filterBundle->GetStringFromName(MOZ_UTF16("textFilter"), getter_Copies(filter));
+    AppendFilter(title,filter);
+  }
+  if (aFilterMask & filterImages) {
+    titleBundle->GetStringFromName(MOZ_UTF16("imageTitle"), getter_Copies(title));
+    filterBundle->GetStringFromName(MOZ_UTF16("imageFilter"), getter_Copies(filter));
+    AppendFilter(title,filter);
+  }
+  if (aFilterMask & filterAudio) {
+    titleBundle->GetStringFromName(MOZ_UTF16("audioTitle"), getter_Copies(title));
+    filterBundle->GetStringFromName(MOZ_UTF16("audioFilter"), getter_Copies(filter));
+    AppendFilter(title,filter);
+  }
+  if (aFilterMask & filterVideo) {
+    titleBundle->GetStringFromName(MOZ_UTF16("videoTitle"), getter_Copies(title));
+    filterBundle->GetStringFromName(MOZ_UTF16("videoFilter"), getter_Copies(filter));
+    AppendFilter(title,filter);
+  }
+  if (aFilterMask & filterXML) {
+    titleBundle->GetStringFromName(MOZ_UTF16("xmlTitle"), getter_Copies(title));
+    filterBundle->GetStringFromName(MOZ_UTF16("xmlFilter"), getter_Copies(filter));
+    AppendFilter(title,filter);
+  }
+  if (aFilterMask & filterXUL) {
+    titleBundle->GetStringFromName(MOZ_UTF16("xulTitle"), getter_Copies(title));
+    filterBundle->GetStringFromName(MOZ_UTF16("xulFilter"), getter_Copies(filter));
+    AppendFilter(title, filter);
+  }
+  if (aFilterMask & filterApps) {
+    titleBundle->GetStringFromName(MOZ_UTF16("appsTitle"), getter_Copies(title));
+    // Pass the magic string "..apps" to the platform filepicker, which it
+    // should recognize and do the correct platform behavior for.
+    AppendFilter(title, NS_LITERAL_STRING("..apps"));
+  }
+  return NS_OK;
+}
+
+// Set the filter index
+NS_IMETHODIMP nsBaseFilePicker::GetFilterIndex(int32_t *aFilterIndex)
+{
+  *aFilterIndex = 0;
+  return NS_OK;
+}
+
+NS_IMETHODIMP nsBaseFilePicker::SetFilterIndex(int32_t aFilterIndex)
+{
+  return NS_OK;
+}
+
+NS_IMETHODIMP nsBaseFilePicker::GetFiles(nsISimpleEnumerator **aFiles)
+{
+  NS_ENSURE_ARG_POINTER(aFiles);
+  nsCOMArray <nsIFile> files;
+  nsresult rv;
+
+  // if we get into the base class, the platform
+  // doesn't implement GetFiles() yet.
+  // so we fake it.
+  nsCOMPtr <nsIFile> file;
+  rv = GetFile(getter_AddRefs(file));
+  NS_ENSURE_SUCCESS(rv,rv);
+
+  files.AppendObject(file);
+
+  return NS_NewArrayEnumerator(aFiles, files);
+}
+
+// Set the display directory
+NS_IMETHODIMP nsBaseFilePicker::SetDisplayDirectory(nsIFile *aDirectory)
+{
+  if (!aDirectory) {
+    mDisplayDirectory = nullptr;
+    return NS_OK;
+  }
+  nsCOMPtr<nsIFile> directory;
+  nsresult rv = aDirectory->Clone(getter_AddRefs(directory));
+  if (NS_FAILED(rv))
+    return rv;
+  mDisplayDirectory = do_QueryInterface(directory, &rv);
+  return rv;
+}
+
+// Get the display directory
+NS_IMETHODIMP nsBaseFilePicker::GetDisplayDirectory(nsIFile **aDirectory)
+{
+  *aDirectory = nullptr;
+  if (!mDisplayDirectory)
+    return NS_OK;
+  nsCOMPtr<nsIFile> directory;
+  nsresult rv = mDisplayDirectory->Clone(getter_AddRefs(directory));
+  if (NS_FAILED(rv)) {
+    return rv;
+  }
+  directory.forget(aDirectory);
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsBaseFilePicker::GetAddToRecentDocs(bool *aFlag)
+{
+  *aFlag = mAddToRecentDocs;
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsBaseFilePicker::SetAddToRecentDocs(bool aFlag)
+{
+  mAddToRecentDocs = aFlag;
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsBaseFilePicker::GetMode(int16_t* aMode)
+{
+  *aMode = mMode;
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsBaseFilePicker::GetDomfile(nsIDOMFile** aDomfile)
+{
+  nsCOMPtr<nsIFile> localFile;
+  nsresult rv = GetFile(getter_AddRefs(localFile));
+  NS_ENSURE_SUCCESS(rv, rv);
+
+  if (!localFile) {
+    *aDomfile = nullptr;
+    return NS_OK;
+  }
+
+  nsRefPtr<nsDOMFileFile> domFile = new nsDOMFileFile(localFile);
+  domFile.forget(aDomfile);
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsBaseFilePicker::GetDomfiles(nsISimpleEnumerator** aDomfiles)
+{
+  nsCOMPtr<nsISimpleEnumerator> iter;
+  nsresult rv = GetFiles(getter_AddRefs(iter));
+  NS_ENSURE_SUCCESS(rv, rv);
+
+  nsRefPtr<nsBaseFilePickerEnumerator> retIter =
+    new nsBaseFilePickerEnumerator(iter);
+
+  retIter.forget(aDomfiles);
+  return NS_OK;
+}
+