From ee96772e0878fa385b9a4a736a2fc109e19fd01e Mon Sep 17 00:00:00 2001 From: Lei Zhang Date: Thu, 19 Apr 2018 20:55:54 +0000 Subject: Add public APIs for undo / redo in forms. Add FORM_CanUndo(), FORM_CanRedo(), FORM_Undo(), and FORM_Redo(). BUG=chromium:764260 Change-Id: I1d9ea67152d9b35d9b8e1d7ef7d019706fdfa30a Reviewed-on: https://pdfium-review.googlesource.com/30872 Commit-Queue: Lei Zhang Reviewed-by: dsinclair --- public/fpdf_formfill.h | 58 ++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 58 insertions(+) (limited to 'public') diff --git a/public/fpdf_formfill.h b/public/fpdf_formfill.h index ff87d99ab5..73964b2a93 100644 --- a/public/fpdf_formfill.h +++ b/public/fpdf_formfill.h @@ -1451,6 +1451,64 @@ FPDF_EXPORT void FPDF_CALLCONV FORM_ReplaceSelection(FPDF_FORMHANDLE hHandle, FPDF_PAGE page, FPDF_WIDESTRING wsText); +/** + * Function: FORM_CanUndo + * Find out if it is possible for the current focused widget in a given + * form to perform an undo operation. + * Parameters: + * hHandle - Handle to the form fill module. Returned by + * FPDFDOC_InitFormFillEnvironment. + * page - Handle to the page. Returned by FPDF_LoadPage + * function. + * Return Value: + * True if it is possible to undo. + **/ +FPDF_EXPORT FPDF_BOOL FPDF_CALLCONV FORM_CanUndo(FPDF_FORMHANDLE hHandle, + FPDF_PAGE page); + +/** + * Function: FORM_CanRedo + * Find out if it is possible for the current focused widget in a given + * form to perform a redo operation. + * Parameters: + * hHandle - Handle to the form fill module. Returned by + * FPDFDOC_InitFormFillEnvironment. + * page - Handle to the page. Returned by FPDF_LoadPage + * function. + * Return Value: + * True if it is possible to redo. + **/ +FPDF_EXPORT FPDF_BOOL FPDF_CALLCONV FORM_CanRedo(FPDF_FORMHANDLE hHandle, + FPDF_PAGE page); + +/** + * Function: FORM_Undo + * Make the current focussed widget perform an undo operation. + * Parameters: + * hHandle - Handle to the form fill module. Returned by + * FPDFDOC_InitFormFillEnvironment. + * page - Handle to the page. Returned by FPDF_LoadPage + * function. + * Return Value: + * True if the undo operation succeeded. + **/ +FPDF_EXPORT FPDF_BOOL FPDF_CALLCONV FORM_Undo(FPDF_FORMHANDLE hHandle, + FPDF_PAGE page); + +/** + * Function: FORM_Redo + * Make the current focussed widget perform a redo operation. + * Parameters: + * hHandle - Handle to the form fill module. Returned by + * FPDFDOC_InitFormFillEnvironment. + * page - Handle to the page. Returned by FPDF_LoadPage + * function. + * Return Value: + * True if the redo operation succeeded. + **/ +FPDF_EXPORT FPDF_BOOL FPDF_CALLCONV FORM_Redo(FPDF_FORMHANDLE hHandle, + FPDF_PAGE page); + /** * Function: FORM_ForceToKillFocus. * You can call this member function to force to kill the focus of the -- cgit v1.2.3