Adding upstream version 115.7.0esr.upstream/115.7.0esrupstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 169 insertions, 0 deletions

diff --git a/widget/gtk/nsClipboardX11.cpp b/widget/gtk/nsClipboardX11.cpp
new file mode 100644
index 0000000000..fc82e0dd8d
--- /dev/null
+++ b/widget/gtk/nsClipboardX11.cpp
@@ -0,0 +1,169 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim:expandtab:shiftwidth=2:tabstop=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 "mozilla/ArrayUtils.h"
+
+#include "AsyncGtkClipboardRequest.h"
+#include "nsClipboardX11.h"
+#include "mozilla/RefPtr.h"
+#include "mozilla/TimeStamp.h"
+#include "mozilla/WidgetUtilsGtk.h"
+
+#include <gtk/gtk.h>
+
+// For manipulation of the X event queue
+#include <X11/Xlib.h>
+#include <poll.h>
+#include <gdk/gdkx.h>
+#include <sys/time.h>
+#include <sys/types.h>
+#include <errno.h>
+#include <unistd.h>
+#include "X11UndefineNone.h"
+
+using namespace mozilla;
+
+nsRetrievalContextX11::nsRetrievalContextX11() = default;
+
+static void DispatchSelectionNotifyEvent(GtkWidget* widget, XEvent* xevent) {
+  GdkEvent event = {};
+  event.selection.type = GDK_SELECTION_NOTIFY;
+  event.selection.window = gtk_widget_get_window(widget);
+  event.selection.selection =
+      gdk_x11_xatom_to_atom(xevent->xselection.selection);
+  event.selection.target = gdk_x11_xatom_to_atom(xevent->xselection.target);
+  event.selection.property = gdk_x11_xatom_to_atom(xevent->xselection.property);
+  event.selection.time = xevent->xselection.time;
+
+  gtk_widget_event(widget, &event);
+}
+
+static void DispatchPropertyNotifyEvent(GtkWidget* widget, XEvent* xevent) {
+  GdkWindow* window = gtk_widget_get_window(widget);
+  if ((gdk_window_get_events(window)) & GDK_PROPERTY_CHANGE_MASK) {
+    GdkEvent event = {};
+    event.property.type = GDK_PROPERTY_NOTIFY;
+    event.property.window = window;
+    event.property.atom = gdk_x11_xatom_to_atom(xevent->xproperty.atom);
+    event.property.time = xevent->xproperty.time;
+    event.property.state = xevent->xproperty.state;
+
+    gtk_widget_event(widget, &event);
+  }
+}
+
+struct checkEventContext {
+  GtkWidget* cbWidget;
+  Atom selAtom;
+};
+
+static Bool checkEventProc(Display* display, XEvent* event, XPointer arg) {
+  checkEventContext* context = (checkEventContext*)arg;
+
+  if (event->xany.type == SelectionNotify ||
+      (event->xany.type == PropertyNotify &&
+       event->xproperty.atom == context->selAtom)) {
+    GdkWindow* cbWindow = gdk_x11_window_lookup_for_display(
+        gdk_x11_lookup_xdisplay(display), event->xany.window);
+    if (cbWindow) {
+      GtkWidget* cbWidget = nullptr;
+      gdk_window_get_user_data(cbWindow, (gpointer*)&cbWidget);
+      if (cbWidget && GTK_IS_WIDGET(cbWidget)) {
+        context->cbWidget = cbWidget;
+        return X11True;
+      }
+    }
+  }
+
+  return X11False;
+}
+
+ClipboardData nsRetrievalContextX11::WaitForClipboardData(
+    ClipboardDataType aDataType, int32_t aWhichClipboard,
+    const char* aMimeType) {
+  AsyncGtkClipboardRequest request(aDataType, aWhichClipboard, aMimeType);
+  if (request.HasCompleted()) {
+    // the request completed synchronously
+    return request.TakeResult();
+  }
+
+  GdkDisplay* gdkDisplay = gdk_display_get_default();
+  // gdk_display_get_default() returns null on headless
+  if (widget::GdkIsX11Display(gdkDisplay)) {
+    Display* xDisplay = GDK_DISPLAY_XDISPLAY(gdkDisplay);
+    checkEventContext context;
+    context.cbWidget = nullptr;
+    context.selAtom =
+        gdk_x11_atom_to_xatom(gdk_atom_intern("GDK_SELECTION", FALSE));
+
+    // Send X events which are relevant to the ongoing selection retrieval
+    // to the clipboard widget.  Wait until either the operation completes, or
+    // we hit our timeout.  All other X events remain queued.
+
+    int poll_result;
+
+    struct pollfd pfd;
+    pfd.fd = ConnectionNumber(xDisplay);
+    pfd.events = POLLIN;
+    TimeStamp start = TimeStamp::Now();
+
+    do {
+      XEvent xevent;
+
+      while (XCheckIfEvent(xDisplay, &xevent, checkEventProc,
+                           (XPointer)&context)) {
+        if (xevent.xany.type == SelectionNotify)
+          DispatchSelectionNotifyEvent(context.cbWidget, &xevent);
+        else
+          DispatchPropertyNotifyEvent(context.cbWidget, &xevent);
+
+        if (request.HasCompleted()) {
+          return request.TakeResult();
+        }
+      }
+
+      TimeStamp now = TimeStamp::Now();
+      int timeout = std::max<int>(
+          0, kClipboardTimeout / 1000 - (now - start).ToMilliseconds());
+      poll_result = poll(&pfd, 1, timeout);
+    } while ((poll_result == 1 && (pfd.revents & (POLLHUP | POLLERR)) == 0) ||
+             (poll_result == -1 && errno == EINTR));
+  }
+
+  LOGCLIP("exceeded clipboard timeout");
+  return {};
+}
+
+ClipboardTargets nsRetrievalContextX11::GetTargetsImpl(
+    int32_t aWhichClipboard) {
+  LOGCLIP("nsRetrievalContextX11::GetTargetsImpl(%s)\n",
+          aWhichClipboard == nsClipboard::kSelectionClipboard ? "primary"
+                                                              : "clipboard");
+  return WaitForClipboardData(ClipboardDataType::Targets, aWhichClipboard)
+      .ExtractTargets();
+}
+
+ClipboardData nsRetrievalContextX11::GetClipboardData(const char* aMimeType,
+                                                      int32_t aWhichClipboard) {
+  LOGCLIP("nsRetrievalContextX11::GetClipboardData(%s) MIME %s\n",
+          aWhichClipboard == nsClipboard::kSelectionClipboard ? "primary"
+                                                              : "clipboard",
+          aMimeType);
+
+  return WaitForClipboardData(ClipboardDataType::Data, aWhichClipboard,
+                              aMimeType);
+}
+
+GUniquePtr<char> nsRetrievalContextX11::GetClipboardText(
+    int32_t aWhichClipboard) {
+  LOGCLIP("nsRetrievalContextX11::GetClipboardText(%s)\n",
+          aWhichClipboard == nsClipboard::kSelectionClipboard ? "primary"
+                                                              : "clipboard");
+
+  return WaitForClipboardData(ClipboardDataType::Text, aWhichClipboard)
+      .ExtractText();
+}