gecko-dev/widget/gtk/nsClipboard.h
Martin Stransky 2a63de4110 Bug 1424661 - refactor ncClipboard::GetData(), allocate all memory by moz_xmalloc() and release by free(), r=jhorak
Refactor ncClipboard::GetData() for better readability, add nsClipboard::SetTransferableData()
to send clipboard data to nsITransferable.

According to Gtk people [1] we can't mix free()/g_free() and malloc()/g_malloc() calls.
Existing nsClipboard code mixes that on some places which can lead to issued on glib built
with specific flags (ENABLE_MEM_PROFILE or ENABLE_MEM_CHECK).

[1] https://mail.gnome.org/archives/gtk-list/2000-July/msg00002.html

MozReview-Commit-ID: GvkUGSttVGO

--HG--
extra : rebase_source : 99801e1dc97e24a8d68fe7f3585562bb541c6628
2017-12-11 11:59:57 +01:00

83 lines
2.7 KiB
C++

/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/* vim:expandtab:shiftwidth=4:tabstop=4:
*/
/* 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/. */
#ifndef __nsClipboard_h_
#define __nsClipboard_h_
#include "nsIClipboard.h"
#include "nsIObserver.h"
#include "nsIBinaryOutputStream.h"
#include <gtk/gtk.h>
// Default Gtk MIME for text
#define GTK_DEFAULT_MIME_TEXT "UTF8_STRING"
class nsRetrievalContext {
public:
// Returned data must be released by free()
virtual const char* WaitForClipboardContext(const char* aMimeType,
int32_t aWhichClipboard,
uint32_t* aContentLength) = 0;
virtual GdkAtom* GetTargets(int32_t aWhichClipboard,
int* aTargetNum) = 0;
nsRetrievalContext() {};
virtual ~nsRetrievalContext() {};
protected:
// Idle timeout for receiving selection and property notify events (microsec)
static const int kClipboardTimeout;
};
class nsClipboard : public nsIClipboard,
public nsIObserver
{
public:
nsClipboard();
NS_DECL_ISUPPORTS
NS_DECL_NSIOBSERVER
NS_DECL_NSICLIPBOARD
// Make sure we are initialized, called from the factory
// constructor
nsresult Init (void);
// Someone requested the selection
void SelectionGetEvent (GtkClipboard *aGtkClipboard,
GtkSelectionData *aSelectionData);
void SelectionClearEvent (GtkClipboard *aGtkClipboard);
private:
virtual ~nsClipboard();
// Save global clipboard content to gtk
nsresult Store (void);
// Get our hands on the correct transferable, given a specific
// clipboard
nsITransferable *GetTransferable (int32_t aWhichClipboard);
// Send clipboard data by nsITransferable
void SetTransferableData(nsITransferable* aTransferable,
nsCString& aFlavor,
const char* aClipboardData,
uint32_t aClipboardDataLength);
// Hang on to our owners and transferables so we can transfer data
// when asked.
nsCOMPtr<nsIClipboardOwner> mSelectionOwner;
nsCOMPtr<nsIClipboardOwner> mGlobalOwner;
nsCOMPtr<nsITransferable> mSelectionTransferable;
nsCOMPtr<nsITransferable> mGlobalTransferable;
nsAutoPtr<nsRetrievalContext> mContext;
};
GdkAtom GetSelectionAtom(int32_t aWhichClipboard);
#endif /* __nsClipboard_h_ */