зеркало из https://github.com/mozilla/gecko-dev.git
796 строки
26 KiB
C++
796 строки
26 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim:expandtab:shiftwidth=4:tabstop=4:
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*/
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "mozilla/ArrayUtils.h"
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#include "nsArrayUtils.h"
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#include "nsClipboard.h"
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#include "nsClipboardX11.h"
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#if defined(MOZ_WAYLAND)
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# include "nsClipboardWayland.h"
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#endif
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#include "nsContentUtils.h"
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#include "HeadlessClipboard.h"
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#include "nsSupportsPrimitives.h"
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#include "nsString.h"
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#include "nsReadableUtils.h"
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#include "nsPrimitiveHelpers.h"
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#include "nsImageToPixbuf.h"
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#include "nsStringStream.h"
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#include "nsIObserverService.h"
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#include "mozilla/Services.h"
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#include "mozilla/RefPtr.h"
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#include "mozilla/SchedulerGroup.h"
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#include "mozilla/TimeStamp.h"
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#include "gfxPlatformGtk.h"
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#include "imgIContainer.h"
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#include <gtk/gtk.h>
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#include <gtk/gtkx.h>
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#include "mozilla/Encoding.h"
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using namespace mozilla;
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// Idle timeout for receiving selection and property notify events (microsec)
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const int kClipboardTimeout = 500000;
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// We add this prefix to HTML markup, so that GetHTMLCharset can correctly
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// detect the HTML as UTF-8 encoded.
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static const char kHTMLMarkupPrefix[] =
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R"(<meta http-equiv="content-type" content="text/html; charset=utf-8">)";
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// Callback when someone asks us for the data
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void clipboard_get_cb(GtkClipboard* aGtkClipboard,
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GtkSelectionData* aSelectionData, guint info,
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gpointer user_data);
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// Callback when someone asks us to clear a clipboard
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void clipboard_clear_cb(GtkClipboard* aGtkClipboard, gpointer user_data);
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static void ConvertHTMLtoUCS2(const char* data, int32_t dataLength,
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char16_t** unicodeData, int32_t& outUnicodeLen);
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static void GetHTMLCharset(const char* data, int32_t dataLength,
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nsCString& str);
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GdkAtom GetSelectionAtom(int32_t aWhichClipboard) {
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if (aWhichClipboard == nsIClipboard::kGlobalClipboard)
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return GDK_SELECTION_CLIPBOARD;
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return GDK_SELECTION_PRIMARY;
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}
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int GetGeckoClipboardType(GtkClipboard* aGtkClipboard) {
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if (aGtkClipboard == gtk_clipboard_get(GDK_SELECTION_PRIMARY))
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return nsClipboard::kSelectionClipboard;
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else if (aGtkClipboard == gtk_clipboard_get(GDK_SELECTION_CLIPBOARD))
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return nsClipboard::kGlobalClipboard;
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else
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return -1; // THAT AIN'T NO CLIPBOARD I EVER HEARD OF
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}
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nsClipboard::nsClipboard() = default;
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nsClipboard::~nsClipboard() {
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// We have to clear clipboard before gdk_display_close() call.
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// See bug 531580 for details.
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if (mGlobalTransferable) {
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gtk_clipboard_clear(gtk_clipboard_get(GDK_SELECTION_CLIPBOARD));
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}
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if (mSelectionTransferable) {
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gtk_clipboard_clear(gtk_clipboard_get(GDK_SELECTION_PRIMARY));
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}
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}
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NS_IMPL_ISUPPORTS(nsClipboard, nsIClipboard, nsIObserver)
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nsresult nsClipboard::Init(void) {
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if (gfxPlatformGtk::GetPlatform()->IsX11Display()) {
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mContext = MakeUnique<nsRetrievalContextX11>();
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#if defined(MOZ_WAYLAND)
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} else {
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mContext = MakeUnique<nsRetrievalContextWayland>();
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#endif
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}
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NS_ASSERTION(mContext, "Missing nsRetrievalContext for nsClipboard!");
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nsCOMPtr<nsIObserverService> os = mozilla::services::GetObserverService();
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if (os) {
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os->AddObserver(this, "xpcom-shutdown", false);
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}
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return NS_OK;
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}
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NS_IMETHODIMP
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nsClipboard::Observe(nsISupports* aSubject, const char* aTopic,
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const char16_t* aData) {
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// Save global clipboard content to CLIPBOARD_MANAGER.
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// gtk_clipboard_store() can run an event loop, so call from a dedicated
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// runnable.
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return SchedulerGroup::Dispatch(
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TaskCategory::Other,
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NS_NewRunnableFunction("gtk_clipboard_store()", []() {
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gtk_clipboard_store(gtk_clipboard_get(GDK_SELECTION_CLIPBOARD));
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}));
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}
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NS_IMETHODIMP
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nsClipboard::SetData(nsITransferable* aTransferable, nsIClipboardOwner* aOwner,
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int32_t aWhichClipboard) {
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// See if we can short cut
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if ((aWhichClipboard == kGlobalClipboard &&
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aTransferable == mGlobalTransferable.get() &&
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aOwner == mGlobalOwner.get()) ||
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(aWhichClipboard == kSelectionClipboard &&
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aTransferable == mSelectionTransferable.get() &&
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aOwner == mSelectionOwner.get())) {
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return NS_OK;
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}
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LOGCLIP(("nsClipboard::SetData (%s)\n",
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aWhichClipboard == kSelectionClipboard ? "primary" : "clipboard"));
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// List of suported targets
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GtkTargetList* list = gtk_target_list_new(nullptr, 0);
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// Get the types of supported flavors
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nsTArray<nsCString> flavors;
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nsresult rv = aTransferable->FlavorsTransferableCanExport(flavors);
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if (NS_FAILED(rv)) {
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LOGCLIP((" FlavorsTransferableCanExport failed!\n"));
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// Fall through. |gtkTargets| will be null below.
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}
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// Add all the flavors to this widget's supported type.
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bool imagesAdded = false;
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for (uint32_t i = 0; i < flavors.Length(); i++) {
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nsCString& flavorStr = flavors[i];
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// Special case text/unicode since we can handle all of the string types.
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if (flavorStr.EqualsLiteral(kUnicodeMime)) {
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LOGCLIP((" text targets\n"));
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gtk_target_list_add_text_targets(list, 0);
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continue;
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}
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if (nsContentUtils::IsFlavorImage(flavorStr)) {
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// Don't bother adding image targets twice
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if (!imagesAdded) {
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// accept any writable image type
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LOGCLIP((" image targets\n"));
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gtk_target_list_add_image_targets(list, 0, TRUE);
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imagesAdded = true;
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}
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continue;
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}
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// Add this to our list of valid targets
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GdkAtom atom = gdk_atom_intern(flavorStr.get(), FALSE);
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gtk_target_list_add(list, atom, 0, 0);
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}
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// Get GTK clipboard (CLIPBOARD or PRIMARY)
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GtkClipboard* gtkClipboard =
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gtk_clipboard_get(GetSelectionAtom(aWhichClipboard));
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gint numTargets;
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GtkTargetEntry* gtkTargets =
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gtk_target_table_new_from_list(list, &numTargets);
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LOGCLIP((" gtk_target_table_new_from_list() = %p\n", (void*)gtkTargets));
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// Set getcallback and request to store data after an application exit
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if (gtkTargets &&
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gtk_clipboard_set_with_data(gtkClipboard, gtkTargets, numTargets,
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clipboard_get_cb, clipboard_clear_cb, this)) {
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LOGCLIP((" gtk_clipboard_set_with_data() is ok\n"));
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// We managed to set-up the clipboard so update internal state
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// We have to set it now because gtk_clipboard_set_with_data() calls
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// clipboard_clear_cb() which reset our internal state
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if (aWhichClipboard == kSelectionClipboard) {
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mSelectionOwner = aOwner;
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mSelectionTransferable = aTransferable;
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} else {
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mGlobalOwner = aOwner;
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mGlobalTransferable = aTransferable;
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gtk_clipboard_set_can_store(gtkClipboard, gtkTargets, numTargets);
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}
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rv = NS_OK;
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} else {
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LOGCLIP((" gtk_clipboard_set_with_data() failed!\n"));
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// Clear references to the any old data and let GTK know that it is no
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// longer available.
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EmptyClipboard(aWhichClipboard);
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rv = NS_ERROR_FAILURE;
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}
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gtk_target_table_free(gtkTargets, numTargets);
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gtk_target_list_unref(list);
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return rv;
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}
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void nsClipboard::SetTransferableData(nsITransferable* aTransferable,
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nsCString& aFlavor,
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const char* aClipboardData,
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uint32_t aClipboardDataLength) {
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LOGCLIP(("nsClipboard::SetTransferableData MIME %s\n", aFlavor.get()));
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nsCOMPtr<nsISupports> wrapper;
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nsPrimitiveHelpers::CreatePrimitiveForData(
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aFlavor, aClipboardData, aClipboardDataLength, getter_AddRefs(wrapper));
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aTransferable->SetTransferData(aFlavor.get(), wrapper);
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}
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NS_IMETHODIMP
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nsClipboard::GetData(nsITransferable* aTransferable, int32_t aWhichClipboard) {
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if (!aTransferable) return NS_ERROR_FAILURE;
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LOGCLIP(("nsClipboard::GetData (%s)\n",
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aWhichClipboard == kSelectionClipboard ? "primary" : "clipboard"));
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// Get a list of flavors this transferable can import
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nsTArray<nsCString> flavors;
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nsresult rv = aTransferable->FlavorsTransferableCanImport(flavors);
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if (NS_FAILED(rv)) {
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LOGCLIP((" FlavorsTransferableCanImport falied!\n"));
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return rv;
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}
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for (uint32_t i = 0; i < flavors.Length(); i++) {
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nsCString& flavorStr = flavors[i];
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if (flavorStr.EqualsLiteral(kJPEGImageMime) ||
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flavorStr.EqualsLiteral(kJPGImageMime) ||
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flavorStr.EqualsLiteral(kPNGImageMime) ||
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flavorStr.EqualsLiteral(kGIFImageMime)) {
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// Emulate support for image/jpg
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if (flavorStr.EqualsLiteral(kJPGImageMime)) {
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flavorStr.Assign(kJPEGImageMime);
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}
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uint32_t clipboardDataLength;
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const char* clipboardData = mContext->GetClipboardData(
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flavorStr.get(), aWhichClipboard, &clipboardDataLength);
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if (!clipboardData) {
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LOGCLIP((" %s type is missing\n", flavorStr.get()));
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continue;
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}
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nsCOMPtr<nsIInputStream> byteStream;
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NS_NewByteInputStream(getter_AddRefs(byteStream),
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MakeSpan(clipboardData, clipboardDataLength),
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NS_ASSIGNMENT_COPY);
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aTransferable->SetTransferData(flavorStr.get(), byteStream);
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LOGCLIP((" got %s MIME data\n", flavorStr.get()));
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mContext->ReleaseClipboardData(clipboardData);
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return NS_OK;
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}
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// Special case text/unicode since we can convert any
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// string into text/unicode
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if (flavorStr.EqualsLiteral(kUnicodeMime)) {
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const char* clipboardData = mContext->GetClipboardText(aWhichClipboard);
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if (!clipboardData) {
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LOGCLIP((" failed to get unicode data\n"));
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// If the type was text/unicode and we couldn't get
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// text off the clipboard, run the next loop
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// iteration.
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continue;
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}
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// Convert utf-8 into our unicode format.
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NS_ConvertUTF8toUTF16 ucs2string(clipboardData);
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const char* unicodeData = (const char*)ToNewUnicode(ucs2string);
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uint32_t unicodeDataLength = ucs2string.Length() * 2;
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SetTransferableData(aTransferable, flavorStr, unicodeData,
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unicodeDataLength);
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free((void*)unicodeData);
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LOGCLIP((" got unicode data, length %d\n", ucs2string.Length()));
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mContext->ReleaseClipboardData(clipboardData);
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return NS_OK;
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}
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uint32_t clipboardDataLength;
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const char* clipboardData = mContext->GetClipboardData(
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flavorStr.get(), aWhichClipboard, &clipboardDataLength);
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#ifdef MOZ_LOGGING
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if (!clipboardData) {
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LOGCLIP((" %s type is missing\n", flavorStr.get()));
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}
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#endif
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if (clipboardData) {
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LOGCLIP((" got %s mime type data.\n", flavorStr.get()));
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// Special case text/html since we can convert into UCS2
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if (flavorStr.EqualsLiteral(kHTMLMime)) {
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char16_t* htmlBody = nullptr;
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int32_t htmlBodyLen = 0;
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// Convert text/html into our unicode format
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ConvertHTMLtoUCS2(clipboardData, clipboardDataLength, &htmlBody,
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htmlBodyLen);
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// Try next data format?
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if (!htmlBodyLen) {
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mContext->ReleaseClipboardData(clipboardData);
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continue;
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}
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SetTransferableData(aTransferable, flavorStr, (const char*)htmlBody,
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htmlBodyLen * 2);
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free(htmlBody);
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} else {
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SetTransferableData(aTransferable, flavorStr, clipboardData,
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clipboardDataLength);
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}
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mContext->ReleaseClipboardData(clipboardData);
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return NS_OK;
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}
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}
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LOGCLIP((" failed to get clipboard content.\n"));
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return NS_OK;
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}
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NS_IMETHODIMP
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nsClipboard::EmptyClipboard(int32_t aWhichClipboard) {
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LOGCLIP(("nsClipboard::EmptyClipboard (%s)\n",
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aWhichClipboard == kSelectionClipboard ? "primary" : "clipboard"));
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if (aWhichClipboard == kSelectionClipboard) {
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if (mSelectionTransferable) {
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gtk_clipboard_clear(gtk_clipboard_get(GDK_SELECTION_PRIMARY));
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MOZ_ASSERT(!mSelectionTransferable);
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}
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} else {
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if (mGlobalTransferable) {
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gtk_clipboard_clear(gtk_clipboard_get(GDK_SELECTION_CLIPBOARD));
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MOZ_ASSERT(!mGlobalTransferable);
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}
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}
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return NS_OK;
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}
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void nsClipboard::ClearTransferable(int32_t aWhichClipboard) {
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if (aWhichClipboard == kSelectionClipboard) {
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if (mSelectionOwner) {
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mSelectionOwner->LosingOwnership(mSelectionTransferable);
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mSelectionOwner = nullptr;
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}
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mSelectionTransferable = nullptr;
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} else {
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if (mGlobalOwner) {
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mGlobalOwner->LosingOwnership(mGlobalTransferable);
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mGlobalOwner = nullptr;
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}
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mGlobalTransferable = nullptr;
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}
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}
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NS_IMETHODIMP
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nsClipboard::HasDataMatchingFlavors(const nsTArray<nsCString>& aFlavorList,
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int32_t aWhichClipboard, bool* _retval) {
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if (!_retval) {
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return NS_ERROR_NULL_POINTER;
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}
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LOGCLIP(("nsClipboard::HasDataMatchingFlavors (%s)\n",
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aWhichClipboard == kSelectionClipboard ? "primary" : "clipboard"));
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*_retval = false;
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int targetNums;
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GdkAtom* targets = mContext->GetTargets(aWhichClipboard, &targetNums);
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if (!targets) {
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LOGCLIP((" no targes at clipboard (null)\n"));
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return NS_OK;
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}
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// Walk through the provided types and try to match it to a
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// provided type.
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for (auto& flavor : aFlavorList) {
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// We special case text/unicode here.
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if (flavor.EqualsLiteral(kUnicodeMime) &&
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gtk_targets_include_text(targets, targetNums)) {
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*_retval = true;
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LOGCLIP((" has kUnicodeMime\n"));
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break;
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}
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for (int32_t j = 0; j < targetNums; j++) {
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gchar* atom_name = gdk_atom_name(targets[j]);
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if (!atom_name) continue;
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if (flavor.Equals(atom_name)) {
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*_retval = true;
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LOGCLIP((" has %s\n", atom_name));
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}
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// X clipboard supports image/jpeg, but we want to emulate support
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// for image/jpg as well
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else if (flavor.EqualsLiteral(kJPGImageMime) &&
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!strcmp(atom_name, kJPEGImageMime)) {
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*_retval = true;
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LOGCLIP((" has image/jpg\n"));
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}
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g_free(atom_name);
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if (*_retval) break;
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}
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}
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#ifdef MOZ_LOGGING
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if (!(*_retval)) {
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LOGCLIP((" no targes at clipboard (bad match)\n"));
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}
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#endif
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g_free(targets);
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return NS_OK;
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}
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NS_IMETHODIMP
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nsClipboard::SupportsSelectionClipboard(bool* _retval) {
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*_retval = mContext->HasSelectionSupport();
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return NS_OK;
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}
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NS_IMETHODIMP
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nsClipboard::SupportsFindClipboard(bool* _retval) {
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*_retval = false;
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return NS_OK;
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}
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nsITransferable* nsClipboard::GetTransferable(int32_t aWhichClipboard) {
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nsITransferable* retval;
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if (aWhichClipboard == kSelectionClipboard)
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retval = mSelectionTransferable.get();
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else
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retval = mGlobalTransferable.get();
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return retval;
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}
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void nsClipboard::SelectionGetEvent(GtkClipboard* aClipboard,
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GtkSelectionData* aSelectionData) {
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// Someone has asked us to hand them something. The first thing
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// that we want to do is see if that something includes text. If
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// it does, try to give it text/unicode after converting it to
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// utf-8.
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int32_t whichClipboard;
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// which clipboard?
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GdkAtom selection = gtk_selection_data_get_selection(aSelectionData);
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if (selection == GDK_SELECTION_PRIMARY)
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whichClipboard = kSelectionClipboard;
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else if (selection == GDK_SELECTION_CLIPBOARD)
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whichClipboard = kGlobalClipboard;
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else
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return; // THAT AIN'T NO CLIPBOARD I EVER HEARD OF
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LOGCLIP(("nsClipboard::SelectionGetEvent (%s)\n",
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whichClipboard == kSelectionClipboard ? "primary" : "clipboard"));
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nsCOMPtr<nsITransferable> trans = GetTransferable(whichClipboard);
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if (!trans) {
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// We have nothing to serve
|
|
LOGCLIP(("nsClipboard::SelectionGetEvent() - %s clipboard is empty!\n",
|
|
whichClipboard == kSelectionClipboard ? "Primary" : "Clipboard"));
|
|
return;
|
|
}
|
|
|
|
nsresult rv;
|
|
nsCOMPtr<nsISupports> item;
|
|
|
|
GdkAtom selectionTarget = gtk_selection_data_get_target(aSelectionData);
|
|
LOGCLIP((" selection target %s\n", gdk_atom_name(selectionTarget)));
|
|
|
|
// Check to see if the selection data is some text type.
|
|
if (gtk_targets_include_text(&selectionTarget, 1)) {
|
|
LOGCLIP((" providing text/unicode data\n"));
|
|
// Try to convert our internal type into a text string. Get
|
|
// the transferable for this clipboard and try to get the
|
|
// text/unicode type for it.
|
|
rv = trans->GetTransferData("text/unicode", getter_AddRefs(item));
|
|
if (NS_FAILED(rv) || !item) {
|
|
LOGCLIP((" GetTransferData() failed to get text/unicode!\n"));
|
|
return;
|
|
}
|
|
|
|
nsCOMPtr<nsISupportsString> wideString;
|
|
wideString = do_QueryInterface(item);
|
|
if (!wideString) return;
|
|
|
|
nsAutoString ucs2string;
|
|
wideString->GetData(ucs2string);
|
|
NS_ConvertUTF16toUTF8 utf8string(ucs2string);
|
|
|
|
LOGCLIP((" sent %d bytes of utf-8 data\n", utf8string.Length()));
|
|
gtk_selection_data_set_text(aSelectionData, utf8string.get(),
|
|
utf8string.Length());
|
|
return;
|
|
}
|
|
|
|
// Check to see if the selection data is an image type
|
|
if (gtk_targets_include_image(&selectionTarget, 1, TRUE)) {
|
|
LOGCLIP((" providing image data\n"));
|
|
// Look through our transfer data for the image
|
|
static const char* const imageMimeTypes[] = {kNativeImageMime,
|
|
kPNGImageMime, kJPEGImageMime,
|
|
kJPGImageMime, kGIFImageMime};
|
|
nsCOMPtr<nsISupports> imageItem;
|
|
nsCOMPtr<imgIContainer> image;
|
|
for (uint32_t i = 0; i < ArrayLength(imageMimeTypes); i++) {
|
|
rv = trans->GetTransferData(imageMimeTypes[i], getter_AddRefs(imageItem));
|
|
if (NS_FAILED(rv)) {
|
|
LOGCLIP(
|
|
(" %s is missing at GetTransferData()\n", imageMimeTypes[i]));
|
|
continue;
|
|
}
|
|
|
|
image = do_QueryInterface(imageItem);
|
|
if (image) {
|
|
LOGCLIP(
|
|
(" %s is available at GetTransferData()\n", imageMimeTypes[i]));
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (!image) { // Not getting an image for an image mime type!?
|
|
LOGCLIP((" Failed to get any image mime from GetTransferData()!\n"));
|
|
return;
|
|
}
|
|
|
|
GdkPixbuf* pixbuf = nsImageToPixbuf::ImageToPixbuf(image);
|
|
if (!pixbuf) {
|
|
LOGCLIP((" nsImageToPixbuf::ImageToPixbuf() failed!\n"));
|
|
return;
|
|
}
|
|
|
|
LOGCLIP((" Setting pixbuf image data as %s\n",
|
|
gdk_atom_name(selectionTarget)));
|
|
gtk_selection_data_set_pixbuf(aSelectionData, pixbuf);
|
|
g_object_unref(pixbuf);
|
|
return;
|
|
}
|
|
|
|
if (selectionTarget == gdk_atom_intern(kHTMLMime, FALSE)) {
|
|
LOGCLIP((" providing %s data\n", kHTMLMime));
|
|
rv = trans->GetTransferData(kHTMLMime, getter_AddRefs(item));
|
|
if (NS_FAILED(rv) || !item) {
|
|
LOGCLIP((" failed to get %s data by GetTransferData()!\n", kHTMLMime));
|
|
return;
|
|
}
|
|
|
|
nsCOMPtr<nsISupportsString> wideString;
|
|
wideString = do_QueryInterface(item);
|
|
if (!wideString) {
|
|
LOGCLIP((" failed to get wideString interface!"));
|
|
return;
|
|
}
|
|
|
|
nsAutoString ucs2string;
|
|
wideString->GetData(ucs2string);
|
|
|
|
nsAutoCString html;
|
|
// Add the prefix so the encoding is correctly detected.
|
|
html.AppendLiteral(kHTMLMarkupPrefix);
|
|
AppendUTF16toUTF8(ucs2string, html);
|
|
|
|
LOGCLIP((" Setting %d bytest of %s data\n", html.Length(),
|
|
gdk_atom_name(selectionTarget)));
|
|
gtk_selection_data_set(aSelectionData, selectionTarget, 8,
|
|
(const guchar*)html.get(), html.Length());
|
|
return;
|
|
}
|
|
|
|
LOGCLIP((" Try if we have anything at GetTransferData() for %s\n",
|
|
gdk_atom_name(selectionTarget)));
|
|
|
|
// Try to match up the selection data target to something our
|
|
// transferable provides.
|
|
gchar* target_name = gdk_atom_name(selectionTarget);
|
|
if (!target_name) {
|
|
LOGCLIP((" Failed to get target name!\n"));
|
|
return;
|
|
}
|
|
|
|
rv = trans->GetTransferData(target_name, getter_AddRefs(item));
|
|
// nothing found?
|
|
if (NS_FAILED(rv) || !item) {
|
|
LOGCLIP((" Failed to get anything from GetTransferData()!\n"));
|
|
g_free(target_name);
|
|
return;
|
|
}
|
|
|
|
void* primitive_data = nullptr;
|
|
uint32_t dataLen = 0;
|
|
nsPrimitiveHelpers::CreateDataFromPrimitive(nsDependentCString(target_name),
|
|
item, &primitive_data, &dataLen);
|
|
|
|
if (primitive_data) {
|
|
LOGCLIP((" Setting %s as a primitive data type, %d bytes\n", target_name,
|
|
dataLen));
|
|
gtk_selection_data_set(aSelectionData, selectionTarget,
|
|
8, /* 8 bits in a unit */
|
|
(const guchar*)primitive_data, dataLen);
|
|
free(primitive_data);
|
|
} else {
|
|
LOGCLIP((" Failed to get primitive data!\n"));
|
|
}
|
|
|
|
g_free(target_name);
|
|
}
|
|
|
|
void nsClipboard::SelectionClearEvent(GtkClipboard* aGtkClipboard) {
|
|
int32_t whichClipboard = GetGeckoClipboardType(aGtkClipboard);
|
|
if (whichClipboard < 0) {
|
|
return;
|
|
}
|
|
|
|
LOGCLIP(("nsClipboard::SelectionClearEvent (%s)\n",
|
|
whichClipboard == kSelectionClipboard ? "primary" : "clipboard"));
|
|
|
|
ClearTransferable(whichClipboard);
|
|
}
|
|
|
|
void clipboard_get_cb(GtkClipboard* aGtkClipboard,
|
|
GtkSelectionData* aSelectionData, guint info,
|
|
gpointer user_data) {
|
|
LOGCLIP(("clipboard_get_cb() callback\n"));
|
|
nsClipboard* aClipboard = static_cast<nsClipboard*>(user_data);
|
|
aClipboard->SelectionGetEvent(aGtkClipboard, aSelectionData);
|
|
}
|
|
|
|
void clipboard_clear_cb(GtkClipboard* aGtkClipboard, gpointer user_data) {
|
|
LOGCLIP(("clipboard_clear_cb() callback\n"));
|
|
nsClipboard* aClipboard = static_cast<nsClipboard*>(user_data);
|
|
aClipboard->SelectionClearEvent(aGtkClipboard);
|
|
}
|
|
|
|
/*
|
|
* when copy-paste, mozilla wants data encoded using UCS2,
|
|
* other app such as StarOffice use "text/html"(RFC2854).
|
|
* This function convert data(got from GTK clipboard)
|
|
* to data mozilla wanted.
|
|
*
|
|
* data from GTK clipboard can be 3 forms:
|
|
* 1. From current mozilla
|
|
* "text/html", charset = utf-16
|
|
* 2. From old version mozilla or mozilla-based app
|
|
* content("body" only), charset = utf-16
|
|
* 3. From other app who use "text/html" when copy-paste
|
|
* "text/html", has "charset" info
|
|
*
|
|
* data : got from GTK clipboard
|
|
* dataLength: got from GTK clipboard
|
|
* body : pass to Mozilla
|
|
* bodyLength: pass to Mozilla
|
|
*/
|
|
void ConvertHTMLtoUCS2(const char* data, int32_t dataLength,
|
|
char16_t** unicodeData, int32_t& outUnicodeLen) {
|
|
nsAutoCString charset;
|
|
GetHTMLCharset(data, dataLength, charset); // get charset of HTML
|
|
if (charset.EqualsLiteral("UTF-16")) { // current mozilla
|
|
outUnicodeLen = (dataLength / 2) - 1;
|
|
*unicodeData = reinterpret_cast<char16_t*>(
|
|
moz_xmalloc((outUnicodeLen + sizeof('\0')) * sizeof(char16_t)));
|
|
memcpy(*unicodeData, data + sizeof(char16_t),
|
|
outUnicodeLen * sizeof(char16_t));
|
|
(*unicodeData)[outUnicodeLen] = '\0';
|
|
} else if (charset.EqualsLiteral("UNKNOWN")) {
|
|
outUnicodeLen = 0;
|
|
return;
|
|
} else {
|
|
// app which use "text/html" to copy&paste
|
|
// get the decoder
|
|
auto encoding = Encoding::ForLabelNoReplacement(charset);
|
|
if (!encoding) {
|
|
#ifdef DEBUG_CLIPBOARD
|
|
g_print(" get unicode decoder error\n");
|
|
#endif
|
|
outUnicodeLen = 0;
|
|
return;
|
|
}
|
|
|
|
auto dataSpan = MakeSpan(data, dataLength);
|
|
// Remove kHTMLMarkupPrefix again, it won't necessarily cause any
|
|
// issues, but might confuse other users.
|
|
const size_t prefixLen = ArrayLength(kHTMLMarkupPrefix) - 1;
|
|
if (dataSpan.Length() >= prefixLen &&
|
|
Substring(data, prefixLen).EqualsLiteral(kHTMLMarkupPrefix)) {
|
|
dataSpan = dataSpan.From(prefixLen);
|
|
}
|
|
|
|
auto decoder = encoding->NewDecoder();
|
|
CheckedInt<size_t> needed =
|
|
decoder->MaxUTF16BufferLength(dataSpan.Length());
|
|
if (!needed.isValid() || needed.value() > INT32_MAX) {
|
|
outUnicodeLen = 0;
|
|
return;
|
|
}
|
|
|
|
outUnicodeLen = 0;
|
|
if (needed.value()) {
|
|
*unicodeData = reinterpret_cast<char16_t*>(
|
|
moz_xmalloc((needed.value() + 1) * sizeof(char16_t)));
|
|
uint32_t result;
|
|
size_t read;
|
|
size_t written;
|
|
bool hadErrors;
|
|
Tie(result, read, written, hadErrors) = decoder->DecodeToUTF16(
|
|
AsBytes(dataSpan), MakeSpan(*unicodeData, needed.value()), true);
|
|
MOZ_ASSERT(result == kInputEmpty);
|
|
MOZ_ASSERT(read == size_t(dataSpan.Length()));
|
|
MOZ_ASSERT(written <= needed.value());
|
|
Unused << hadErrors;
|
|
outUnicodeLen = written;
|
|
// null terminate.
|
|
(*unicodeData)[outUnicodeLen] = '\0';
|
|
} // if valid length
|
|
}
|
|
}
|
|
|
|
/*
|
|
* get "charset" information from clipboard data
|
|
* return value can be:
|
|
* 1. "UTF-16": mozilla or "text/html" with "charset=utf-16"
|
|
* 2. "UNKNOWN": mozilla can't detect what encode it use
|
|
* 3. other: "text/html" with other charset than utf-16
|
|
*/
|
|
void GetHTMLCharset(const char* data, int32_t dataLength, nsCString& str) {
|
|
// if detect "FFFE" or "FEFF", assume UTF-16
|
|
char16_t* beginChar = (char16_t*)data;
|
|
if ((beginChar[0] == 0xFFFE) || (beginChar[0] == 0xFEFF)) {
|
|
str.AssignLiteral("UTF-16");
|
|
return;
|
|
}
|
|
// no "FFFE" and "FEFF", assume ASCII first to find "charset" info
|
|
const nsDependentCSubstring htmlStr(data, dataLength);
|
|
nsACString::const_iterator start, end;
|
|
htmlStr.BeginReading(start);
|
|
htmlStr.EndReading(end);
|
|
nsACString::const_iterator valueStart(start), valueEnd(start);
|
|
|
|
if (CaseInsensitiveFindInReadable(NS_LITERAL_CSTRING("CONTENT=\"text/html;"),
|
|
start, end)) {
|
|
start = end;
|
|
htmlStr.EndReading(end);
|
|
|
|
if (CaseInsensitiveFindInReadable(NS_LITERAL_CSTRING("charset="), start,
|
|
end)) {
|
|
valueStart = end;
|
|
start = end;
|
|
htmlStr.EndReading(end);
|
|
|
|
if (FindCharInReadable('"', start, end)) valueEnd = start;
|
|
}
|
|
}
|
|
// find "charset" in HTML
|
|
if (valueStart != valueEnd) {
|
|
str = Substring(valueStart, valueEnd);
|
|
ToUpperCase(str);
|
|
#ifdef DEBUG_CLIPBOARD
|
|
printf("Charset of HTML = %s\n", charsetUpperStr.get());
|
|
#endif
|
|
return;
|
|
}
|
|
str.AssignLiteral("UNKNOWN");
|
|
}
|