Factor out a bunch of duplicated code for clipboard stuff

aegisub/src/auto4_lua.cpp

@@ -281,18 +281,11 @@ namespace {
 
 	int clipboard_get(lua_State *L)
 	{
-		if (wxTheClipboard->Open()) {
-			if (wxTheClipboard->IsSupported(wxDF_TEXT)) {
-				wxTextDataObject rawdata;
-				wxTheClipboard->GetData(rawdata);
-				lua_pushstring(L, rawdata.GetText().utf8_str());
-			}
-			else
-				lua_pushnil(L);
-			wxTheClipboard->Close();
-		}
-		else
+		wxString data = GetClipboard();
+		if (!data)
 			lua_pushnil(L);
+		else
+			lua_pushstring(L, data.utf8_str());
 		return 1;
 	}
 

aegisub/src/command/edit.cpp

@@ -61,6 +61,7 @@
 #include "../subs_edit_ctrl.h"
 #include "../subs_grid.h"
 #include "../text_selection_controller.h"
+#include "../utils.h"
 #include "../video_context.h"
 
 namespace {
@@ -83,15 +84,7 @@ struct validate_sel_multiple : public Command {
 };
 
 void paste_lines(agi::Context *c, bool paste_over) {
-	wxString data;
-	if (wxTheClipboard->Open()) {
-		if (wxTheClipboard->IsSupported(wxDF_TEXT)) {
-			wxTextDataObject rawdata;
-			wxTheClipboard->GetData(rawdata);
-			data = rawdata.GetText();
-		}
-		wxTheClipboard->Close();
-	}
+	wxString data = GetClipboard();
 	if (!data) return;
 
 	AssDialogue *rel_line = c->selectionController->GetActiveLine();
@@ -505,10 +498,7 @@ static void copy_lines(agi::Context *c) {
 		}
 	}
 
-	if (wxTheClipboard->Open()) {
-		wxTheClipboard->SetData(new wxTextDataObject(data));
-		wxTheClipboard->Close();
-	}
+	SetClipboard(data);
 }
 
 static void delete_lines(agi::Context *c, wxString const& commit_message) {
@@ -782,12 +772,12 @@ struct edit_line_paste : public Command {
 	CMD_TYPE(COMMAND_VALIDATE)
 
 	bool Validate(const agi::Context *) {
+		bool can_paste = false;
 		if (wxTheClipboard->Open()) {
-			bool can_paste = wxTheClipboard->IsSupported(wxDF_TEXT);
+			can_paste = wxTheClipboard->IsSupported(wxDF_TEXT);
 			wxTheClipboard->Close();
-			return can_paste;
 		}
-		return false;
+		return can_paste;
 	}
 
 	void operator()(agi::Context *c) {
@@ -808,12 +798,12 @@ struct edit_line_paste_over : public Command {
 	CMD_TYPE(COMMAND_VALIDATE)
 
 	bool Validate(const agi::Context *c) {
-		if (wxTheClipboard->Open()) {
-			bool can_paste = wxTheClipboard->IsSupported(wxDF_TEXT);
+		bool can_paste = !c->selectionController->GetSelectedSet().empty();
+		if (can_paste && wxTheClipboard->Open()) {
+			can_paste = wxTheClipboard->IsSupported(wxDF_TEXT);
 			wxTheClipboard->Close();
-			return can_paste && c->selectionController->GetSelectedSet().size();
 		}
-		return false;
+		return can_paste;
 	}
 
 	void operator()(agi::Context *c) {

aegisub/src/command/video.cpp

@@ -241,10 +241,7 @@ struct video_copy_coordinates : public validator_video_loaded {
 	STR_HELP("Copy the current coordinates of the mouse over the video to the clipboard")
 
 	void operator()(agi::Context *c) {
-		if (wxTheClipboard->Open()) {
-			wxTheClipboard->SetData(new wxTextDataObject(c->videoDisplay->GetMousePosition().Str()));
-			wxTheClipboard->Close();
-		}
+		SetClipboard(c->videoDisplay->GetMousePosition().Str());
 	}
 };
 
@@ -308,10 +305,7 @@ struct video_frame_copy : public validator_video_loaded {
 	STR_HELP("Copy the currently displayed frame to the clipboard")
 
 	void operator()(agi::Context *c) {
-		if (wxTheClipboard->Open()) {
-			wxTheClipboard->SetData(new wxBitmapDataObject(wxBitmap(c->videoController->GetFrame(c->videoController->GetFrameN())->GetImage(),24)));
-			wxTheClipboard->Close();
-		}
+		SetClipboard(wxBitmap(c->videoController->GetFrame(c->videoController->GetFrameN())->GetImage(), 24));
 	}
 };
 
@@ -323,10 +317,7 @@ struct video_frame_copy_raw : public validator_video_loaded {
 	STR_HELP("Copy the currently displayed frame to the clipboard, without the subtitles")
 
 	void operator()(agi::Context *c) {
-		if (wxTheClipboard->Open()) {
-			wxTheClipboard->SetData(new wxBitmapDataObject(wxBitmap(c->videoController->GetFrame(c->videoController->GetFrameN(), true)->GetImage(),24)));
-			wxTheClipboard->Close();
-		}
+		SetClipboard(wxBitmap(c->videoController->GetFrame(c->videoController->GetFrameN(), true)->GetImage(), 24));
 	}
 };
 

aegisub/src/dialog_style_manager.cpp

@@ -67,6 +67,7 @@
 #include "selection_controller.h"
 #include "standard_paths.h"
 #include "subtitle_format.h"
+#include "utils.h"
 
 using std::tr1::placeholders::_1;
 
@@ -121,22 +122,9 @@ wxString unique_name(Func name_checker, wxString const& source_name) {
 	return source_name;
 }
 
-wxString get_clipboard_text() {
-	wxString text;
-	if (wxTheClipboard->Open()) {
-		if (wxTheClipboard->IsSupported(wxDF_TEXT)) {
-			wxTextDataObject rawdata;
-			wxTheClipboard->GetData(rawdata);
-			text = rawdata.GetText();
-		}
-		wxTheClipboard->Close();
-	}
-	return text;
-}
-
 template<class Func1, class Func2>
 void add_styles(Func1 name_checker, Func2 style_adder) {
-	wxStringTokenizer st(get_clipboard_text(), '\n');
+	wxStringTokenizer st(GetClipboard(), '\n');
 	while (st.HasMoreTokens()) {
 		try {
 			AssStyle *s = new AssStyle(st.GetNextToken().Trim(true));
@@ -485,10 +473,7 @@ void DialogStyleManager::CopyToClipboard(wxListBox *list, T const& v) {
 		data += s->GetEntryData();
 	}
 
-	if (wxTheClipboard->Open()) {
-		wxTheClipboard->SetData(new wxTextDataObject(data));
-		wxTheClipboard->Close();
-	}
+	SetClipboard(data);
 }
 
 void DialogStyleManager::PasteToCurrent() {

aegisub/src/main.cpp

@@ -295,11 +295,6 @@ int AegisubApp::OnExit() {
 	if (frame)
 		delete frame;
 
-	if (wxTheClipboard->Open()) {
-		wxTheClipboard->Flush();
-		wxTheClipboard->Close();
-	}
-
 	SubtitleFormat::DestroyFormats();
 	VideoContext::OnExit();
 	delete plugins;

aegisub/src/subs_edit_box.cpp

@@ -292,7 +292,7 @@ void SubsEditBox::OnCommit(int type) {
 	}
 
 	if (type & AssFile::COMMIT_DIAG_TEXT) {
-		TextEdit->SetTextTo(line->Text);
+		TextEdit->SetValue(line->Text);
 	}
 
 	if (type & AssFile::COMMIT_DIAG_META) {
@@ -497,7 +497,7 @@ void SubsEditBox::SetControlsState(bool state) {
 	Enable(state);
 	if (!state) {
 		wxEventBlocker blocker(this);
-		TextEdit->SetTextTo("");
+		TextEdit->SetValue("");
 	}
 }
 

aegisub/src/subs_edit_ctrl.cpp

@@ -703,15 +703,7 @@ void SubsTextEditCtrl::SetTextTo(wxString text) {
 
 
 void SubsTextEditCtrl::Paste() {
-	wxString data;
-	if (wxTheClipboard->Open()) {
-		if (wxTheClipboard->IsSupported(wxDF_TEXT)) {
-			wxTextDataObject rawdata;
-			wxTheClipboard->GetData(rawdata);
-			data = rawdata.GetText();
-		}
-		wxTheClipboard->Close();
-	}
+	wxString data = GetClipboard();
 
 	data.Replace("\r\n", "\\N");
 	data.Replace("\n", "\\N");

aegisub/src/timeedit_ctrl.cpp

@@ -51,6 +51,7 @@
 #include "compat.h"
 #include "include/aegisub/context.h"
 #include "main.h"
+#include "utils.h"
 #include "video_context.h"
 
 #define TimeEditWindowStyle
@@ -224,10 +225,7 @@ void TimeEdit::OnFocusLost(wxFocusEvent &evt) {
 }
 
 void TimeEdit::CopyTime() {
-	if (wxTheClipboard->Open()) {
-		wxTheClipboard->SetData(new wxTextDataObject(GetValue()));
-		wxTheClipboard->Close();
-	}
+	SetClipboard(GetValue());
 }
 
 void TimeEdit::PasteTime() {
@@ -236,23 +234,16 @@ void TimeEdit::PasteTime() {
 		return;
 	}
 
-	if (wxTheClipboard->Open()) {
-		wxString text;
-		if (wxTheClipboard->IsSupported(wxDF_TEXT)) {
-			wxTextDataObject data;
-			wxTheClipboard->GetData(data);
-			text = data.GetText().Trim(false).Trim(true);
-		}
-		wxTheClipboard->Close();
+	wxString text = GetClipboard();
+	if (!text) return;
 
-		AssTime tempTime(text);
-		if (tempTime.GetAssFormated() == text) {
-			SetTime(tempTime);
-			SetSelection(0, GetValue().size());
+	AssTime tempTime(text);
+	if (tempTime.GetAssFormated() == text) {
+		SetTime(tempTime);
+		SetSelection(0, GetValue().size());
 
-			wxCommandEvent evt(wxEVT_COMMAND_TEXT_UPDATED, GetId());
-			evt.SetEventObject(this);
-			HandleWindowEvent(evt);
-		}
+		wxCommandEvent evt(wxEVT_COMMAND_TEXT_UPDATED, GetId());
+		evt.SetEventObject(this);
+		HandleWindowEvent(evt);
 	}
 }

aegisub/src/utils.cpp

@@ -311,6 +311,38 @@ bool ForwardMouseWheelEvent(wxWindow *source, wxMouseEvent &evt) {
 	return false;
 }
 
+wxString GetClipboard() {
+	wxString data;
+	wxClipboard *cb = wxClipboard::Get();
+	if (cb->Open()) {
+		if (cb->IsSupported(wxDF_TEXT)) {
+			wxTextDataObject raw_data;
+			cb->GetData(raw_data);
+			data = raw_data.GetText();
+		}
+		cb->Close();
+	}
+	return data;
+}
+
+void SetClipboard(wxString const& new_data) {
+	wxClipboard *cb = wxClipboard::Get();
+	if (cb->Open()) {
+		cb->SetData(new wxTextDataObject(new_data));
+		cb->Close();
+		cb->Flush();
+	}
+}
+
+void SetClipboard(wxBitmap const& new_data) {
+	wxClipboard *cb = wxClipboard::Get();
+	if (cb->Open()) {
+		cb->SetData(new wxBitmapDataObject(new_data));
+		cb->Close();
+		cb->Flush();
+	}
+}
+
 namespace {
 class cache_cleaner : public wxThread {
 	wxString directory;

aegisub/src/utils.h

@@ -121,6 +121,12 @@ template <typename T> T tabs(T x) { return x < 0 ? -x : x; }
 /// @precondition a <= c
 template<typename T> inline T mid(T a, T b, T c) { return std::max(a, std::min(b, c)); }
 
+/// Get the text contents of the clipboard, or empty string on failure
+wxString GetClipboard();
+/// Try to set the clipboard to the given string
+void SetClipboard(wxString const& new_value);
+void SetClipboard(wxBitmap const& new_value);
+
 #ifndef FORCEINLINE
 #ifdef __VISUALC__
 #define FORCEINLINE __forceinline