X-Git-Url: https://git.lyx.org/gitweb/?a=blobdiff_plain;f=src%2FBufferView.C;h=12ac9b7e02d8d8a7cbce7678ec59d8c5b4aa2a47;hb=e07f7bcc50358fe9b7d68955de145b7249248c7b;hp=e1a57a50044991c4418f73c89da32cfea2a6b735;hpb=3660343dc7da7cb40b93448949dca02a579505d5;p=lyx.git

diff --git a/src/BufferView.C b/src/BufferView.C
index e1a57a5004..12ac9b7e02 100644
--- a/src/BufferView.C
+++ b/src/BufferView.C
@@ -1,1525 +1,298 @@
 // -*- C++ -*-
 /* This file is part of
- * ======================================================
+ * ====================================================== 
  * 
  *           LyX, The Document Processor
  *        
  *           Copyright 1995 Matthias Ettrich
- *           Copyright 1995-1999 The LyX Team.
+ *           Copyright 1995-2000 The LyX Team.
  *
- * ======================================================*/
+ * ====================================================== */
 
 #include <config.h>
 
-#include <cstdlib>
-#include <csignal>
-
-#include <unistd.h>
-#include <sys/wait.h>
-
-#include "support/lstrings.h"
-
 #ifdef __GNUG__
 #pragma implementation
 #endif
 
-#include "commandtags.h"
 #include "BufferView.h"
-#include "bufferlist.h"
-#include "LyXView.h"
-#include "lyxfunc.h"
-#include "insets/lyxinset.h"
-#include "minibuffer.h"
-#include "lyxscreen.h"
-#include "up.xpm"
-#include "down.xpm"
-#include "debug.h"
-#include "lyxdraw.h"
-#include "lyx_gui_misc.h"
-#include "BackStack.h"
+#include "BufferView_pimpl.h"
 #include "lyxtext.h"
-#include "lyx_cb.h"
-#include "gettext.h"
-#include "layout.h"
-
-extern BufferList bufferlist;
-void sigchldhandler(pid_t pid, int *status);
-
-extern void SetXtermCursor(Window win);
-extern bool input_prohibited;
-extern bool selection_possible;
-extern void BeforeChange();
-extern char ascii_type;
-extern int UnlockInset(UpdatableInset* inset);
-extern void ToggleFloat();
-extern void MenuPasteSelection(char at);
-extern InsetUpdateStruct *InsetUpdateList;
-extern void UpdateInsetUpdateList();
-
-// This is _very_ temporary
-FL_OBJECT * figinset_canvas;
-
-BufferView::BufferView(LyXView *o, int xpos, int ypos,
+#include "WorkArea.h"
+#include "lyxscreen.h"
+
+
+BufferView::BufferView(LyXView * o, int xpos, int ypos,
 		       int width, int height)
-	: owner_(o)
+	: pimpl_(new Pimpl(this, o, xpos, ypos, width, height))
 {
-	buffer_ = 0;
-	
-	screen = 0;
-	work_area = 0;
-	figinset_canvas = 0;
-	scrollbar = 0;
-	button_down = 0;
-	button_up = 0;
-	timer_cursor = 0;
-	current_scrollbar_value = 0;
-	create_view(xpos, ypos, width, height);
-	// Activate the timer for the cursor 
-	fl_set_timer(timer_cursor, 0.4);
-	fl_set_focus_object(owner_->getForm(), work_area);
-	work_area_focus = true;
-	lyx_focus = false;
+	text = 0;
+	inset_slept = false;
 }
 
 
-void BufferView::buffer(Buffer *b)
+BufferView::~BufferView()
 {
-	lyxerr[Debug::INFO] << "Setting buffer in BufferView" << endl;
-	if (buffer_) {
-		buffer_->InsetSleep();
-		buffer_->delUser(this);
-	}
-
-	// Set current buffer
-	buffer_ = b;
-
-	if (bufferlist.getState() == BufferList::CLOSING) return;
-	
-	// Nuke old image
-	if (screen)
-		delete screen;
-	screen = 0;
-
-	// If we are closing the buffer, use the first buffer as current
-	if (!buffer_) {
-		buffer_ = bufferlist.first();
-	}
-
-	if (buffer_) {
-		lyxerr[Debug::INFO] << "  Buffer addr: " << buffer_ << endl;
-		buffer_->addUser(this);
-		owner_->getMenus()->showMenus();
-		// If we don't have a text object for this, we make one
-		if (buffer_->text == 0)
-			resizeCurrentBuffer();
-		else {
-			updateScreen();
-			updateScrollbar();
-		}
-		screen->first = screen->TopCursorVisible();
-		redraw();
-		updateAllVisibleBufferRelatedPopups();
-	        buffer_->InsetWakeup();
-	} else {
-		lyxerr[Debug::INFO] << "  No Buffer!" << endl;
-		owner_->getMenus()->hideMenus();
-		updateScrollbar();
-		fl_redraw_object(work_area);
-	}
-	// should update layoutchoice even if we don't have a buffer.
-	owner_->updateLayoutChoice();
-	owner_->getMiniBuffer()->Init();
-	owner_->updateWindowTitle();
+	delete text;
+	delete pimpl_;
 }
 
 
-void BufferView::updateScreen()
+Buffer * BufferView::buffer() const
 {
-	// Regenerate the screen.
-	if (screen)
-		delete screen;
-	screen = new LyXScreen(FL_ObjWin(work_area),
-			       work_area->w,
-			       work_area->h,
-			       work_area->x,
-			       work_area->y,
-			       buffer_->text);
+	return pimpl_->buffer_;
 }
 
 
-void BufferView::resize()
+LyXScreen * BufferView::screen() const
 {
-	// This will resize the buffer. (Asger)
-	if (buffer_)
-		resizeCurrentBuffer();
+	return pimpl_->screen_;
 }
 
 
-static bool lgb_hack = false;
+WorkArea * BufferView::workarea() const
+{
+	return pimpl_->workarea_;
+}
 
-void BufferView::redraw()
+
+LyXView * BufferView::owner() const
 {
-	lyxerr[Debug::INFO] << "BufferView::redraw()" << endl;
-	lgb_hack = true;
-	fl_redraw_object(work_area);
-	fl_redraw_object(scrollbar);
-	fl_redraw_object(button_down);
-	fl_redraw_object(button_up);
-	lgb_hack = false;
+	return pimpl_->owner_;
 }
 
 
-void BufferView::fitCursor()
+void BufferView::pushIntoUpdateList(Inset * i)
 {
-	if (screen) screen->FitCursor();
+	pimpl_->updatelist.push(i);
 }
 
 
-void BufferView::update()
+Painter & BufferView::painter() 
 {
-	if (screen) screen->Update();
+	return pimpl_->painter();
 }
 
 
-void BufferView::updateScrollbar()
+void BufferView::buffer(Buffer * b)
 {
-	/* If the text is smaller than the working area, the scrollbar
-	 * maximum must be the working area height. No scrolling will 
-	 * be possible */
-
-	if (!buffer_) {
-		fl_set_slider_value(scrollbar, 0);
-		fl_set_slider_size(scrollbar, scrollbar->h);
-		return;
-	}
-	
-	static long max2 = 0;
-	static long height2 = 0;
-
-	long cbth = 0;
-	long cbsf = 0;
-
-	if (buffer_->text)
-		cbth = buffer_->text->height;
-	if (screen)
-		cbsf = screen->first;
-
-	// check if anything has changed.
-	if (max2 == cbth &&
-	    height2 == work_area->h &&
-	    current_scrollbar_value == cbsf)
-		return;	      // no
-	
-	max2 = cbth;
-	height2 = work_area->h;
-	current_scrollbar_value = cbsf;
-
-	if (cbth <= height2) { // text is smaller than screen
-		fl_set_slider_size(scrollbar, scrollbar->h);
-		return;
-	}
-	
-	long maximum_height = work_area->h * 3/4 + cbth;
-	long value = cbsf;
-
-	// set the scrollbar
-	double hfloat = work_area->h;
-	double maxfloat = maximum_height;
-   
-	fl_set_slider_value(scrollbar, value);
-	fl_set_slider_bounds(scrollbar, 0,
-			     maximum_height - work_area->h);
-#if FL_REVISION > 85
-	double lineh = buffer_->text->DefaultHeight();
-	fl_set_slider_increment(scrollbar,work_area->h-lineh,lineh);
-#endif
-	if (maxfloat>0){
-		if ((hfloat/maxfloat) * float(height2) < 3)
-			fl_set_slider_size(scrollbar,
-					   3/float(height2));
-		else
-			fl_set_slider_size(scrollbar,
-					   hfloat/maxfloat);
-	} else
-		fl_set_slider_size(scrollbar, hfloat);
-	fl_set_slider_precision(scrollbar, 0);
+	pimpl_->buffer(b);
 }
 
 
-void BufferView::redoCurrentBuffer()
+void BufferView::resize(int xpos, int ypos, int width, int height)
 {
-	lyxerr[Debug::INFO] << "BufferView::redoCurrentBuffer" << endl;
-	if (buffer_ && buffer_->text) {
-		resize();
-		owner_->updateLayoutChoice();
-	}
+	pimpl_->resize(xpos, ypos, width, height);
 }
 
 
-int BufferView::resizeCurrentBuffer()
+void BufferView::resize()
 {
-	lyxerr[Debug::INFO] << "resizeCurrentBuffer" << endl;
-	
-	LyXParagraph * par = 0;
-	LyXParagraph * selstartpar = 0;
-	LyXParagraph * selendpar = 0;
-	int pos = 0;
-	int selstartpos = 0;
-	int selendpos = 0;
-	int selection = 0;
-	int mark_set = 0;
-
-	ProhibitInput();
-
-	owner_->getMiniBuffer()->Set(_("Formatting document..."));   
-
-	if (buffer_->text) {
-		par = buffer_->text->cursor.par;
-		pos = buffer_->text->cursor.pos;
-		selstartpar = buffer_->text->sel_start_cursor.par;
-		selstartpos = buffer_->text->sel_start_cursor.pos;
-		selendpar = buffer_->text->sel_end_cursor.par;
-		selendpos = buffer_->text->sel_end_cursor.pos;
-		selection = buffer_->text->selection;
-		mark_set = buffer_->text->mark_set;
-		delete buffer_->text;
-	}
-	buffer_->text = new LyXText(work_area->w, buffer_);
-
-	updateScreen();
-   
-	if (par) {
-		buffer_->text->selection = true;
-		/* at this point just
-		 * to avoid the Delete-
-		 * Empty-Paragraph
-		 * Mechanism when
-		 * setting the cursor */
-		buffer_->text->mark_set = mark_set;
-		if (selection) {
-			buffer_->text->SetCursor(selstartpar, selstartpos);
-			buffer_->text->sel_cursor = buffer_->text->cursor;
-			buffer_->text->SetCursor(selendpar, selendpos);
-			buffer_->text->SetSelection();
-			buffer_->text->SetCursor(par, pos);
-		} else {
-			buffer_->text->SetCursor(par, pos);
-			buffer_->text->sel_cursor = buffer_->text->cursor;
-			buffer_->text->selection = false;
-		}
-	}
-	screen->first = screen->TopCursorVisible(); /* this will scroll the
-						     * screen such that the
-						     * cursor becomes
-						     * visible */ 
-	updateScrollbar();
-	redraw();
-	owner_->getMiniBuffer()->Init();
-	AllowInput();
-
-	// Now if the title form still exist kill it
-	TimerCB(0,0);
-
-	return 0;
+	pimpl_->resize();
 }
 
 
-void BufferView::gotoError()
+void BufferView::redraw()
 {
-	if (!screen)
-		return;
-   
-	screen->HideCursor();
-	BeforeChange();
-	buffer_->update(-2);
-	LyXCursor tmp;
-   
-	if (!buffer_->text->GotoNextError()) {
-		if (buffer_->text->cursor.pos 
-		    || buffer_->text->cursor.par !=
-		    buffer_->text->FirstParagraph()) {
-			tmp = buffer_->text->cursor;
-			buffer_->text->cursor.par =
-				buffer_->text->FirstParagraph();
-			buffer_->text->cursor.pos = 0;
-			if (!buffer_->text->GotoNextError()) {
-				buffer_->text->cursor = tmp;
-				owner_->getMiniBuffer()->Set(_("No more errors"));
-				LyXBell();
-			}
-		} else {
-			owner_->getMiniBuffer()->Set(_("No more errors"));
-			LyXBell();
-		}
-	}
-	buffer_->update(0);
-	buffer_->text->sel_cursor =
-		buffer_->text->cursor;
+	pimpl_->redraw();
 }
 
 
-// Just a bunch of C wrappers around static members of BufferView
-extern "C" void C_BufferView_UpCB(FL_OBJECT * ob, long buf) {
-	BufferView::UpCB(ob, buf);
+void BufferView::fitCursor(LyXText * text)
+{
+	pimpl_->fitCursor(text);
 }
 
-extern "C" void C_BufferView_DownCB(FL_OBJECT * ob, long buf) {
-	BufferView::DownCB(ob, buf);
+
+void BufferView::update()
+{
+	pimpl_->update();
 }
 
-extern "C" void C_BufferView_ScrollCB(FL_OBJECT * ob, long buf) {
-	BufferView::ScrollCB(ob, buf);
+
+void BufferView::updateScrollbar()
+{
+	pimpl_->updateScrollbar();
 }
 
-extern "C" void C_BufferView_CursorToggleCB(FL_OBJECT * ob, long buf) {
-	BufferView::CursorToggleCB(ob, buf);
+
+void BufferView::scrollCB(double value)
+{
+	pimpl_->scrollCB(value);
 }
 
-extern "C" int C_BufferView_work_area_handler(FL_OBJECT * ob, int event,
-					      FL_Coord, FL_Coord, 
-					      int key, void * xev) {
-	return BufferView::work_area_handler(ob, event, 0, 0, key, xev);
+
+Inset * BufferView::checkInsetHit(LyXText * text, int & x, int & y,
+				  unsigned int button)
+{
+	return pimpl_->checkInsetHit(text, x, y, button);
 }
 
 
-void BufferView::create_view(int xpos, int ypos, int width, int height)
+void BufferView::redoCurrentBuffer()
 {
-	FL_OBJECT * obj;
-	const int bw = abs(fl_get_border_width());
-
-	// a hack for the figinsets (Matthias)
-	// This one first, then it will probably be invisible. (Lgb)
-	::figinset_canvas = figinset_canvas = obj =
-		fl_add_canvas(FL_NORMAL_CANVAS,
-			      xpos + 1,
-			      ypos + 1,1,1,"");
-	fl_set_object_boxtype(obj,FL_NO_BOX);
-	fl_set_object_resize(obj, FL_RESIZE_ALL);
-	fl_set_object_gravity(obj, NorthWestGravity, NorthWestGravity);
-
-	// a box
-	obj = fl_add_box(FL_BORDER_BOX, xpos, ypos,
-			 width - 15,
-			 height,"");
-	fl_set_object_resize(obj, FL_RESIZE_ALL);
-	fl_set_object_gravity(obj, NorthWestGravity, SouthEastGravity);
-
-	// the free object
-	work_area = obj = fl_add_free(FL_INPUT_FREE,
-				      xpos +bw, ypos+bw,
-				      width-15-2*bw /* scrollbarwidth */,
-				      height-2*bw,"",
-				      C_BufferView_work_area_handler);
-	obj->wantkey = FL_KEY_TAB;
-	obj->u_vdata = this; /* This is how we pass the BufferView
-				       to the work_area_handler. */
-	fl_set_object_boxtype(obj,FL_DOWN_BOX);
-	fl_set_object_resize(obj, FL_RESIZE_ALL);
-	fl_set_object_gravity(obj, NorthWestGravity, SouthEastGravity);
-
-	//
-	// THE SCROLLBAR
-	//
-
-	// up - scrollbar button
-#if FL_REVISION > 85
-	fl_set_border_width(-1);
-#else
-	fl_set_border_width(-2); // to get visible feedback
-#endif
-	button_up = obj = fl_add_pixmapbutton(FL_TOUCH_BUTTON,
-					      width-15+4*bw,
-					      ypos,
-					      15,15,"");
-	fl_set_object_boxtype(obj,FL_UP_BOX);
-	fl_set_object_color(obj,FL_MCOL,FL_BLUE);
-	fl_set_object_resize(obj, FL_RESIZE_ALL);
-	fl_set_object_gravity(obj,NorthEastGravity, NorthEastGravity);
-	fl_set_object_callback(obj, C_BufferView_UpCB, 0);
-	obj->u_vdata = this;
-	fl_set_pixmapbutton_data(obj, up_xpm);
-
-#if FL_REVISION > 85
-	// Remove the blue feedback rectangle
-	fl_set_pixmapbutton_focus_outline(obj,0);
-#endif	
-
-	// the scrollbar slider
-	fl_set_border_width(-bw);
-	scrollbar = obj = fl_add_slider(FL_VERT_SLIDER,
-					width-15+4*bw,
-					ypos + 15,
-					15,height-30,"");
-	fl_set_object_color(obj,FL_COL1,FL_MCOL);
-	fl_set_object_boxtype(obj, FL_UP_BOX);
-	fl_set_object_resize(obj, FL_RESIZE_ALL);
-	fl_set_object_gravity(obj, NorthEastGravity, SouthEastGravity);
-	fl_set_object_callback(obj, C_BufferView_ScrollCB, 0);
-	obj->u_vdata = this;
-	
-	// down - scrollbar button
-#if FL_REVISION > 85
-	fl_set_border_width(-1);
-#else
-	fl_set_border_width(-2); // to get visible feedback
-#endif
-	button_down = obj = fl_add_pixmapbutton(FL_TOUCH_BUTTON,
-						      width-15+4*bw,
-						      ypos + height-15,
-						      15,15,"");
-	fl_set_object_boxtype(obj,FL_UP_BOX);
-	fl_set_object_color(obj,FL_MCOL,FL_BLUE);
-	fl_set_object_resize(obj, FL_RESIZE_ALL);
-	fl_set_object_gravity(obj, SouthEastGravity, SouthEastGravity);
-	fl_set_object_callback(obj, C_BufferView_DownCB, 0);
-	obj->u_vdata = this;
-	fl_set_pixmapbutton_data(obj, down_xpm);
-	fl_set_border_width(-bw);
-
-#if FL_REVISION >85
-	// Remove the blue feedback rectangle
-	fl_set_pixmapbutton_focus_outline(obj,0);
-#endif	
-
-	//
-	// TIMERS
-	//
-	
-	// timer_cursor
-	timer_cursor = obj = fl_add_timer(FL_HIDDEN_TIMER,
-					  0,0,0,0,"Timer");
-	fl_set_object_callback(obj,C_BufferView_CursorToggleCB,0);
-	obj->u_vdata = this;
+	pimpl_->redoCurrentBuffer();
 }
 
 
-// Callback for scrollbar up button
-void BufferView::UpCB(FL_OBJECT * ob, long)
+int BufferView::resizeCurrentBuffer()
 {
-	BufferView * view = static_cast<BufferView*>(ob->u_vdata);
-	
-	if (view->buffer_ == 0) return;
-
-	XEvent const * ev2;
-	static long time = 0;
-	ev2 = fl_last_event();
-	if (ev2->type == ButtonPress || ev2->type == ButtonRelease) 
-		time = 0;
-	int button = fl_get_button_numb(ob);
-	switch (button) {
-	case 3:
-		view->ScrollUpOnePage(time++); break;
-	case 2:
-		view->ScrollDownOnePage(time++); break;
-	default:
-		view->ScrollUp(time++); break;
-	}
+	return pimpl_->resizeCurrentBuffer();
 }
 
 
-static
-void waitForX()
+void BufferView::cursorPrevious(LyXText * text)
 {
-#if 0
-	static Window w = 0;
-	static Atom a = 0;
-	if (!a)
-		a = XInternAtom(fl_display, "WAIT_FOR_X", False);
-	if (w == 0) {
-		int mask;
-		XSetWindowAttributes attr;
-		mask = CWOverrideRedirect;
-		attr.override_redirect = 1;
-		w = XCreateWindow(fl_display, fl_root,
-				  0, 0, 1, 1, 0, CopyFromParent,
-				  InputOnly, CopyFromParent, mask, &attr);
-		XSelectInput(fl_display, w, PropertyChangeMask);
-		XMapWindow(fl_display, w);
-	}
-	static XEvent ev;
-	XChangeProperty(fl_display, w, a, a, 8,
-			PropModeAppend, reinterpret_cast<unsigned char*>(""), 0);
-	XWindowEvent(fl_display, w, PropertyChangeMask, &ev);
-#endif
-	XSync(fl_get_display(), 0);
+	pimpl_->cursorPrevious(text);
 }
 
 
-// Callback for scrollbar slider
-void BufferView::ScrollCB(FL_OBJECT * ob, long)
+void BufferView::cursorNext(LyXText * text)
 {
-	BufferView * view = static_cast<BufferView*>(ob->u_vdata);
-	extern bool cursor_follows_scrollbar;
-	
-	if (view->buffer_ == 0) return;
-
-	view->current_scrollbar_value = long(fl_get_slider_value(ob));
-	if (view->current_scrollbar_value < 0)
-		view->current_scrollbar_value = 0;
-   
-	if (!view->screen)
-		return;
-
-	view->screen->Draw(view->current_scrollbar_value);
-
-	if (cursor_follows_scrollbar) {
-		LyXText * vbt = view->buffer_->text;
-		int height = vbt->DefaultHeight();
-		
-		if (vbt->cursor.y < view->screen->first + height) {
-			vbt->SetCursorFromCoordinates(0,
-						      view->screen->first +
-						      height);
-		}
-		else if (vbt->cursor.y >
-			 view->screen->first + view->work_area->h - height) {
-			vbt->SetCursorFromCoordinates(0,
-						      view->screen->first +
-						      view->work_area->h  -
-						      height);
-		}
-	}
-	waitForX();
+	pimpl_->cursorNext(text);
 }
 
 
-// Callback for scrollbar down button
-void BufferView::DownCB(FL_OBJECT * ob, long)
+bool BufferView::available() const
 {
-	BufferView * view = static_cast<BufferView*>(ob->u_vdata);
-
-	if (view->buffer_ == 0) return;
-	
-	XEvent const * ev2;
-	static long time = 0;
-	ev2 = fl_last_event();
-	if (ev2->type == ButtonPress || ev2->type == ButtonRelease) 
-		time = 0;
-	int button = fl_get_button_numb(ob);
-	switch (button) {
-	case 2:
-		view->ScrollUpOnePage(time++); break;
-	case 3:
-		view->ScrollDownOnePage(time++); break;
-	default:
-		view->ScrollDown(time++); break;
-	}
+	return pimpl_->available();
 }
 
 
-int BufferView::ScrollUp(long time)
+void BufferView::beforeChange(LyXText * text)
 {
-	if (buffer_ == 0) return 0;
-	if (!screen)
-		return 0;
-   
-	double value= fl_get_slider_value(scrollbar);
-   
-	if (value == 0)
-		return 0;
-   
-	float add_value =  (buffer_->text->DefaultHeight()
-			    + float(time) * float(time) * 0.125);
-   
-	if (add_value > work_area->h)
-		add_value = float(work_area->h -
-				  buffer_->text->DefaultHeight());
-   
-	value -= add_value;
-
-	if (value < 0)
-		value = 0;
-   
-	fl_set_slider_value(scrollbar, value);
-   
-	ScrollCB(scrollbar, 0); 
-	return 0;
+	pimpl_->beforeChange(text);
 }
 
 
-int BufferView::ScrollDown(long time)
+void BufferView::savePosition(unsigned int i)
 {
-	if (buffer_ == 0) return 0;
-	if (!screen)
-		return 0;
-   
-	double value= fl_get_slider_value(scrollbar);
-	double min, max;
-	fl_get_slider_bounds(scrollbar, &min, &max);
-
-	if (value == max)
-		return 0;
-   
-	float add_value =  (buffer_->text->DefaultHeight()
-			    + float(time) * float(time) * 0.125);
-   
-	if (add_value > work_area->h)
-		add_value = float(work_area->h -
-				  buffer_->text->DefaultHeight());
-   
-	value += add_value;
-   
-	if (value > max)
-		value = max;
-   
-	fl_set_slider_value(scrollbar, value);
-   
-	ScrollCB(scrollbar, 0); 
-	return 0;
+	pimpl_->savePosition(i);
 }
 
 
-void BufferView::ScrollUpOnePage(long /*time*/)
+void BufferView::restorePosition(unsigned int i)
 {
-	if (buffer_ == 0) return;
-	if (!screen)
-		return;
-   
-	long y = screen->first;
-
-	if (!y) return;
-   
-	Row* row = buffer_->text->GetRowNearY(y);
-	y = y - work_area->h + row->height;
-	
-	fl_set_slider_value(scrollbar, y);
-   
-	ScrollCB(scrollbar, 0); 
+	pimpl_->restorePosition(i);
 }
 
 
-void BufferView::ScrollDownOnePage(long /*time*/)
+bool BufferView::isSavedPosition(unsigned int i)
 {
-	if (buffer_ == 0) return;
-	if (!screen)
-		return;
-   
-	double min, max;
-	fl_get_slider_bounds(scrollbar, &min, &max);
-	long y = screen->first;
-   
-	if (y > buffer_->text->height - work_area->h)
-		return;
-   
-	y += work_area->h;
-	buffer_->text->GetRowNearY(y);
-	
-	fl_set_slider_value(scrollbar, y);
-   
-	ScrollCB(scrollbar, 0); 
+	return pimpl_->isSavedPosition(i);
 }
 
 
-int BufferView::work_area_handler(FL_OBJECT * ob, int event,
-				  FL_Coord, FL_Coord ,
-				  int /*key*/, void *xev)
+void BufferView::update(LyXText * text, UpdateCodes f)
 {
-	static int x_old = -1;
-	static int y_old = -1;
-	static long scrollbar_value_old = -1;
-	
-	XEvent * ev = static_cast<XEvent*>(xev);
-	BufferView * view = static_cast<BufferView*>(ob->u_vdata);
-
-	// If we don't have a view yet; return
-	if (!view || quitting) return 0;
-
-	switch (event){   
-	case FL_DRAW:
-		view->workAreaExpose(); 
-		break;
-	case FL_PUSH:
-		view->WorkAreaButtonPress(ob, 0,0,0,ev,0);
-		break; 
-	case FL_RELEASE:
-		view->WorkAreaButtonRelease(ob, 0,0,0,ev,0);
-		break;
-	case FL_MOUSE:
-		if (ev->xmotion.x != x_old || 
-		    ev->xmotion.y != y_old ||
-		    view->current_scrollbar_value != scrollbar_value_old) {
-			x_old = ev->xmotion.x;
-			y_old = ev->xmotion.y;
-			scrollbar_value_old = view->current_scrollbar_value;
-			view->WorkAreaMotionNotify(ob, 0,0,0,ev,0);
-		}
-		break;
-	// Done by the raw callback:
-	//  case FL_KEYBOARD: WorkAreaKeyPress(ob, 0,0,0,ev,0); break;
-	case FL_FOCUS:
-		if (!view->owner_->getMiniBuffer()->shows_no_match)
-			view->owner_->getMiniBuffer()->Init();
-		view->owner_->getMiniBuffer()->shows_no_match = false;
-		view->work_area_focus = true;
-		fl_set_timer(view->timer_cursor, 0.4);
-		break;
-	case FL_UNFOCUS:
-		view->owner_->getMiniBuffer()->ExecCommand();
-		view->work_area_focus = false;
-		break;
-	case FL_ENTER:
-		SetXtermCursor(view->owner_->getForm()->window);
-		// reset the timer
-		view->lyx_focus = true;
-		fl_set_timer(view->timer_cursor, 0.4);
-		break;
-	case FL_LEAVE: 
-		if (!input_prohibited)
-			XUndefineCursor(fl_display,
-					view->owner_->getForm()->window);
-		view->lyx_focus = false; // This is not an absolute truth
-		// but if it is not true, it will be changed within a blink
-		// of an eye. ... Not good enough... use regulare timeperiod
-		//fl_set_timer(view->timer_cursor, 0.01); // 0.1 sec blink
-		fl_set_timer(view->timer_cursor, 0.4); // 0.4 sec blink
-		break;
-	case FL_DBLCLICK: 
-		// select a word 
-		if (view->buffer_ && !view->buffer_->the_locking_inset) {
-			if (view->screen && ev->xbutton.button == 1) {
-				view->screen->HideCursor();
-				view->screen->ToggleSelection(); 
-				view->buffer_->text->SelectWord();
-				view->screen->ToggleSelection(false);
-				/* This will fit the cursor on the screen
-				 * if necessary */ 
-				view->buffer_->update(0); 
-			}
-		}
-		break;
-	case FL_TRPLCLICK:
-		// select a line
-		if (view->buffer_ && view->screen && ev->xbutton.button == 1) {
-			view->screen->HideCursor(); 
-			view->screen->ToggleSelection(); 
-			view->buffer_->text->CursorHome();
-			view->buffer_->text->sel_cursor =
-				view->buffer_->text->cursor;
-			view->buffer_->text->CursorEnd();
-			view->buffer_->text->SetSelection();
-			view->screen->ToggleSelection(false); 
-			/* This will fit the cursor on the screen
-			 * if necessary */ 
-			view->buffer_->update(0); 
-		}
-		break;
-	case FL_OTHER:
-		view->WorkAreaSelectionNotify(ob,
-					      view->owner_->getForm()->window,
-					      0,0,ev,0); 
-		break;
-	}
-	return 1;
+	pimpl_->update(text, f);
 }
 
-int BufferView::WorkAreaMotionNotify(FL_OBJECT *ob, Window,
-				     int /*w*/, int /*h*/,
-				     XEvent *ev, void */*d*/)
+
+void BufferView::setState()
 {
+	pimpl_->setState();
+}
+
 
-	if (buffer_ == 0) return 0;
-	if (!screen) return 0;
-
-	// Check for inset locking
-	if (buffer_->the_locking_inset) {
-		LyXCursor cursor = buffer_->text->cursor;
-		buffer_->the_locking_inset->
-			InsetMotionNotify(ev->xbutton.x - ob->x - cursor.x,
-					  ev->xbutton.y - ob->y -
-					  (cursor.y),
-					  ev->xbutton.state);
-		return 0;
-	}
-   
-	// Only use motion with button 1
-	if (!ev->xmotion.state & Button1MotionMask)
-		return 0; 
-   
-	/* The selection possible is needed, that only motion events are 
-	 * used, where the bottom press event was on the drawing area too */
-	if (selection_possible) {
-		screen->HideCursor();
-
-		buffer_->text->
-			SetCursorFromCoordinates(ev->xbutton.x - ob->x,
-						 ev->xbutton.y - ob->y +
-						 screen->first);
-      
-		if (!buffer_->text->selection)
-		    buffer_->update(-3); // Maybe an empty line was deleted
-      
-		buffer_->text->SetSelection();
-		screen->ToggleToggle();
-		if (screen->FitCursor())
-			updateScrollbar(); 
-		screen->ShowCursor();
-	}
-	return 0;
+void BufferView::insetSleep()
+{
+	pimpl_->insetSleep();
 }
 
 
-extern int bibitemMaxWidth(LyXFont const &);
+void BufferView::insetWakeup()
+{
+	pimpl_->insetWakeup();
+}
+
 
-// Single-click on work area
-int BufferView::WorkAreaButtonPress(FL_OBJECT *ob, Window,
-			int /*w*/, int /*h*/, XEvent *ev, void */*d*/)
+void BufferView::insetUnlock()
 {
-	last_click_x = -1;
-	last_click_y = -1;
-
-	if (buffer_ == 0) return 0;
-	if (!screen) return 0;
-
-	int const x = ev->xbutton.x - ob->x;
-	int const y = ev->xbutton.y - ob->y;
-	// If we hit an inset, we have the inset coordinates in these
-	// and inset_hit points to the inset.  If we do not hit an
-	// inset, inset_hit is 0, and inset_x == x, inset_y == y.
-	int inset_x = x;
-	int inset_y = y;
-	Inset * inset_hit = checkInsetHit(inset_x, inset_y);
-
-	// ok ok, this is a hack.
-	int button = ev->xbutton.button;
-	if (button == 4 || button == 5) goto wheel;
-
-	{
-		
-	if (buffer_->the_locking_inset) {
-		// We are in inset locking mode
-		
-		/* Check whether the inset was hit. If not reset mode,
-		   otherwise give the event to the inset */
-		if (inset_hit != 0) {
-			buffer_->the_locking_inset->
-				InsetButtonPress(inset_x, inset_y, button);
-			return 0;
-		} else {
-			UnlockInset(buffer_->the_locking_inset);
-		}
-	}
-	
-	selection_possible = true;
-	screen->HideCursor();
-	
-	// Right button mouse click on a table
-	if (button == 3 &&
-	    (buffer_->text->cursor.par->table ||
-	     buffer_->text->MouseHitInTable(x, y+screen->first))) {
-		// Set the cursor to the press-position
-		buffer_->text->SetCursorFromCoordinates(x, y + screen->first);
-		bool doit = true;
-		
-		// Only show the table popup if the hit is in the table, too
-		if (!buffer_->text->HitInTable(buffer_->text->cursor.row, x))
-			doit = false;
-		
-		// Hit above or below the table?
-		if (doit) {
-			if (!buffer_->text->selection) {
-				screen->ToggleSelection();
-				buffer_->text->ClearSelection();
-				buffer_->text->FullRebreak();
-				screen->Update();
-				updateScrollbar();
-			}
-			// Popup table popup when on a table.
-			// This is obviously temporary, since we should be
-		       	// able to 
-		       	// popup various context-sensitive-menus with the
-		       	// the right mouse. So this should be done more
-		       	// general in the future. Matthias.
-			selection_possible = false;
-			owner_->getLyXFunc()->Dispatch(LFUN_LAYOUT_TABLE,
-						       "true");
-			return 0;
-		}
-	}
-	
-	int screen_first = screen->first;
-	
-	// Middle button press pastes if we have a selection
-	bool paste_internally = false;
-	if (button == 2  // && !buffer_->the_locking_inset
-	    && buffer_->text->selection) {
-		owner_->getLyXFunc()->Dispatch(LFUN_COPY);
-		paste_internally = true;
-	}
-	
-	// Clear the selection
-	screen->ToggleSelection();
-	buffer_->text->ClearSelection();
-	buffer_->text->FullRebreak();
-	screen->Update();
-	updateScrollbar();
-		
-	// Single left click in math inset?
-	if (inset_hit != 0 && inset_hit->Editable() == 2) {
-		// Highly editable inset, like math
-		selection_possible = false;
-		owner_->updateLayoutChoice();
-		owner_->getMiniBuffer()->Set(inset_hit->EditMessage());
-		inset_hit->Edit(inset_x, inset_y);
-		return 0;
-	} 
-
-	// Right click on a footnote flag opens float menu
-	if (button == 3) { 
-		selection_possible = false;
-		return 0;
-	}
-	
-	buffer_->text->SetCursorFromCoordinates(x, y + screen_first);
-	buffer_->text->FinishUndo();
-	buffer_->text->sel_cursor = buffer_->text->cursor;
-	buffer_->text->cursor.x_fix = buffer_->text->cursor.x;
-	
-	owner_->updateLayoutChoice();
-	if (screen->FitCursor()){
-		updateScrollbar();
-		selection_possible = false;
-	}
-
-	// Insert primary selection with middle mouse
-	// if there is a local selection in the current buffer, insert this
-	if (button == 2) { //  && !buffer_->the_locking_inset){
-		if (paste_internally)
-			owner_->getLyXFunc()->Dispatch(LFUN_PASTE);
-		else
-			owner_->getLyXFunc()->Dispatch(LFUN_PASTESELECTION,
-						       "paragraph");
-		selection_possible = false;
-		return 0;
-	}
-	}
-	goto out;
- wheel: {
-	// I am not quite sure if this is the correct place to put this,
-	// but it will not cause any harm.
-	// Patch from Mark Huang (markman@mit.edu) to make LyX recognise
-	// button 4 and 5. This enables LyX use use the scrollwhell on
-	// certain mice for something useful. (Lgb)
-	// Added wheel acceleration detection code. (Rvdk)
-	static Time lastTime = 0;
-	int diff = ev->xbutton.time - lastTime;
-	int scroll = int(1.0 + (4.0/(abs(diff)+1.0))*200.0);
-	switch (button) {
-	case 4:
-		ScrollUp(scroll);
-		break;
-	case 5:
-		ScrollDown(scroll);
-		break;
-	}
-	lastTime = ev->xbutton.time;
-	return 0;
-	}
- out:
-	last_click_x = x;
-	last_click_y = y;
-	
-	return 0;
+	pimpl_->insetUnlock();
 }
 
 
-int BufferView::WorkAreaButtonRelease(FL_OBJECT *ob, Window ,
-			  int /*w*/, int /*h*/, XEvent *ev, void */*d*/)
+bool BufferView::focus() const
 {
-	if (buffer_ == 0 || screen == 0) return 0;
-
-	int const x = ev->xbutton.x - ob->x;
-	int const y = ev->xbutton.y - ob->y;
-
-	// If we hit an inset, we have the inset coordinates in these
-	// and inset_hit points to the inset.  If we do not hit an
-	// inset, inset_hit is 0, and inset_x == x, inset_y == y.
-	int inset_x = x;
-	int inset_y = y;
-	Inset * inset_hit = checkInsetHit(inset_x, inset_y);
-
-	if (buffer_->the_locking_inset) {
-		// We are in inset locking mode.
-
-		/* LyX does a kind of work-area grabbing for insets.
-		   Only a ButtonPress Event outside the inset will 
-		   force a InsetUnlock. */
-		buffer_->the_locking_inset->
-			InsetButtonRelease(inset_x, inset_y, 
-					   ev->xbutton.button);
-		return 0;
-	}
-  
-	selection_possible = false;
-        if (buffer_->text->cursor.par->table) {
-                int cell = buffer_->text->
-                        NumberOfCell(buffer_->text->cursor.par,
-                                     buffer_->text->cursor.pos);
-                if (buffer_->text->cursor.par->table->IsContRow(cell) &&
-                    buffer_->text->cursor.par->table->
-                    CellHasContRow(buffer_->text->cursor.par->table->
-                                   GetCellAbove(cell))<0) {
-                        buffer_->text->CursorUp();
-                }
-        }
-	
-	if (ev->xbutton.button >= 2)
-		return 0;
-
-	// Make sure that the press was not far from the release
-	if ((abs(last_click_x - x) >= 5) ||
-	    (abs(last_click_y - y) >= 5)) {
-		return 0;
-	}
-
-	// Did we hit an editable inset?
-	if (inset_hit != 0) {
-		// Inset like error, notes and figures
-		selection_possible = false;
-#ifdef WITH_WARNINGS
-#warning fix this proper in 0.13
-#endif
-		// Following a ref shouldn't issue
-		// a push on the undo-stack
-		// anylonger, now that we have
-		// keybindings for following
-		// references and returning from
-		// references.  IMHO though, it
-		// should be the inset's own business
-		// to push or not push on the undo
-		// stack. They don't *have* to
-		// alter the document...
-		// (Joacim)
-		// ...or maybe the SetCursorParUndo()
-		// below isn't necessary at all anylonger?
-		if (inset_hit->LyxCode() == Inset::REF_CODE) {
-			buffer_->text->SetCursorParUndo();
-		}
-
-		owner_->getMiniBuffer()->Set(inset_hit->EditMessage());
-		inset_hit->Edit(inset_x, inset_y);
-		return 0;
-	}
-
-	// check whether we want to open a float
-	if (buffer_->text) {
-		bool hit = false;
-		char c = ' ';
-		if (buffer_->text->cursor.pos <
-		    buffer_->text->cursor.par->Last()) {
-			c = buffer_->text->cursor.par->
-				GetChar(buffer_->text->cursor.pos);
-		}
-		if (c == LYX_META_FOOTNOTE || c == LYX_META_MARGIN
-		    || c == LYX_META_FIG || c == LYX_META_TAB
-		    || c == LYX_META_WIDE_FIG || c == LYX_META_WIDE_TAB
-                    || c == LYX_META_ALGORITHM){
-			hit = true;
-		} else if (buffer_->text->cursor.pos - 1 >= 0) {
-			c = buffer_->text->cursor.par->
-				GetChar(buffer_->text->cursor.pos - 1);
-			if (c == LYX_META_FOOTNOTE || c == LYX_META_MARGIN
-			    || c == LYX_META_FIG || c == LYX_META_TAB
-			    || c == LYX_META_WIDE_FIG 
-			    || c == LYX_META_WIDE_TAB
-			    || c == LYX_META_ALGORITHM){
-				// We are one step too far to the right
-				buffer_->text->CursorLeft();
-				hit = true;
-			}
-		}
-		if (hit == true) {
-			ToggleFloat();
-			selection_possible = false;
-			return 0;
-		}
-	}
-
-	// Do we want to close a float? (click on the float-label)
-	if (buffer_->text->cursor.row->par->footnoteflag ==
-	    LyXParagraph::OPEN_FOOTNOTE
-	    && buffer_->text->cursor.pos == 0
-	    && buffer_->text->cursor.row->previous &&
-	    buffer_->text->cursor.row->previous->par->
-	    footnoteflag != LyXParagraph::OPEN_FOOTNOTE){
-		LyXFont font (LyXFont::ALL_SANE);
-		font.setSize(LyXFont::SIZE_SMALL);
-
-		int box_x = 20; // LYX_PAPER_MARGIN;
-		box_x += font.textWidth("Mwide-figM", 10);
-
-		int screen_first = screen->first;
-
-		if (x < box_x
-		    && y + screen_first > buffer_->text->cursor.y -
-		    buffer_->text->cursor.row->baseline
-		    && y + screen_first < buffer_->text->cursor.y -
-		    buffer_->text->cursor.row->baseline
-		    + font.maxAscent()*1.2 + font.maxDescent()*1.2) {
-			ToggleFloat();
-			selection_possible = false;
-			return 0;
-		}
-	}
-
-	// Maybe we want to edit a bibitem ale970302
-	if (buffer_->text->cursor.par->bibkey && x < 20 + 
-	    bibitemMaxWidth(textclasslist.TextClass(buffer_->
-					params.textclass).defaultfont())) {
-		buffer_->text->cursor.par->bibkey->Edit(0, 0);
-	}
-
-	return 0;
+  	return pimpl_->focus();
 }
 
 
-/* 
- * Returns an inset if inset was hit. 0 otherwise.
- * If hit, the coordinates are changed relative to the inset. 
- * Otherwise coordinates are not changed, and false is returned.
- */
-Inset * BufferView::checkInsetHit(int & x, int & y)
+void BufferView::focus(bool f)
 {
-	if (!getScreen())
-		return 0;
-  
-	int y_tmp = y + getScreen()->first;
-  
-	LyXCursor cursor = buffer_->text->cursor;
-	if (cursor.pos < cursor.par->Last() 
-	    && cursor.par->GetChar(cursor.pos) == LYX_META_INSET
-	    && cursor.par->GetInset(cursor.pos)
-	    && cursor.par->GetInset(cursor.pos)->Editable()) {
-
-		// Check whether the inset really was hit
-		Inset* tmpinset = cursor.par->GetInset(cursor.pos);
-		LyXFont font = buffer_->text->GetFont(cursor.par, cursor.pos);
-		if (x > cursor.x
-		    && x < cursor.x + tmpinset->Width(font) 
-		    && y_tmp > cursor.y - tmpinset->Ascent(font)
-		    && y_tmp < cursor.y + tmpinset->Descent(font)) {
-			x = x - cursor.x;
-			// The origin of an inset is on the baseline
-			y = y_tmp - (cursor.y); 
-			return tmpinset;
-		}
-	} else if (cursor.pos - 1 >= 0 
-		   && cursor.par->GetChar(cursor.pos - 1) == LYX_META_INSET
-		   && cursor.par->GetInset(cursor.pos - 1)
-		   && cursor.par->GetInset(cursor.pos - 1)->Editable()) {
-		buffer_->text->CursorLeft();
-		Inset * result = checkInsetHit(x, y);
-		if (result == 0) {
-			buffer_->text->CursorRight();
-			return 0;
-		} else {
-			return result;
-		}
-	}
-	return 0;
+  	pimpl_->focus(f);
 }
 
 
-int BufferView::workAreaExpose()
+bool BufferView::active() const
 {
-	if (!work_area || !work_area->form->visible) 
-		return 1;
-
-	// this is a hack to ensure that we only call this through
-	// BufferView::redraw().
-	if (!lgb_hack) {
-		redraw();
-	}
-	
-	static int work_area_width = work_area->w;
-	static int work_area_height = work_area->h;
-
-	bool widthChange = work_area->w != work_area_width;
-	bool heightChange = work_area->h != work_area_height;
-
-	// update from work area
-	work_area_width = work_area->w;
-	work_area_height = work_area->h;
-	if (buffer_ != 0) {
-		if (widthChange) {
-			// All buffers need a resize
-			bufferlist.resize();
-		} else if (heightChange) {
-			// Rebuild image of current screen
-			updateScreen();
-			// fitCursor() ensures we don't jump back
-			// to the start of the document on vertical
-			// resize
-			fitCursor();
-
-			// The main window size has changed, repaint most stuff
-			redraw();
-			// ...including the minibuffer
-			owner_->getMiniBuffer()->Init();
-
-		} else if (screen) screen->Redraw();
-	} else {
-		// Grey box when we don't have a buffer
-		fl_winset(FL_ObjWin(work_area));
-		fl_rectangle(1, work_area->x, work_area->y,
-			     work_area->w, work_area->h, FL_GRAY63);
-	}
-
-	// always make sure that the scrollbar is sane.
-	updateScrollbar();
-	owner_->updateLayoutChoice();
-	return 1;
+  	return pimpl_->active();
 }
 
 
-// Callback for cursor timer
-void BufferView::CursorToggleCB(FL_OBJECT * ob, long)
+int BufferView::workWidth() const
 {
-	BufferView *view = static_cast<BufferView*>(ob->u_vdata);
-	
-	/* quite a nice place for asyncron Inset updating, isn't it? */
-	// actually no! This is run even if no buffer exist... so (Lgb)
-	if (view && !view->buffer_) {
-		goto set_timer_and_return;
-	}
-
-	// NOTE:
-	// On my quest to solve the gs rendre hangups I am now
-	// disabling the SIGHUP completely, and will do a wait
-	// now and then instead. If the guess that xforms somehow
-	// destroys something is true, this is likely (hopefully)
-	// to solve the problem...at least I hope so. Lgb
-
-	// ...Ok this seems to work...at least it does not make things
-	// worse so far. However I still see gs processes that hangs.
-	// I would really like to know _why_ they are hanging. Anyway
-	// the solution without the SIGCHLD handler seems to be easier
-	// to debug.
-
-	// When attaching gdb to a a running gs that hangs it shows
-	// that it is waiting for input(?) Is it possible for us to
-	// provide that input somehow? Or figure what it is expecing
-	// to read?
-
-	// One solution is to, after some time, look if there are some
-	// old gs processes still running and if there are: kill them
-	// and re render.
-
-	// Another solution is to provide the user an option to rerender
-	// a picture. This would, for the picture in question, check if
-	// there is a gs running for it, if so kill it, and start a new
-	// rendering process.
-
-	// these comments posted to lyx@via
-	{
-	int status = 1;
-	int pid = waitpid((pid_t)0, &status, WNOHANG);
-	if (pid == -1) // error find out what is wrong
-		; // ignore it for now.
-	else if (pid > 0)
-		sigchldhandler(pid, &status);
-	}
-	if (InsetUpdateList) 
-		UpdateInsetUpdateList();
-
-	if (view && !view->screen){
-		goto set_timer_and_return;
-	}
-
-	if (view->lyx_focus && view->work_area_focus) {
-		if (!view->buffer_->the_locking_inset){
-			view->screen->CursorToggle();
-		} else {
-			view->buffer_->the_locking_inset->
-				ToggleInsetCursor();
-		}
-		goto set_timer_and_return;
-	} else {
-		// Make sure that the cursor is visible.
-		if (!view->buffer_->the_locking_inset){
-			view->screen->ShowCursor();
-		} else {
-			if (!view->buffer_->the_locking_inset->isCursorVisible())
-				view->buffer_->the_locking_inset->
-					ToggleInsetCursor();
-		}
-
-		// This is only run when work_area_focus or lyx_focus is false.
-		Window tmpwin;
-		int tmp;
-		XGetInputFocus(fl_display, &tmpwin, &tmp);
-		if (lyxerr.debugging()) {
-			lyxerr << "tmpwin: " << tmpwin
-			       << "\nwindow: " << view->owner_->getForm()->window
-			       << "\nwork_area_focus: " << view->work_area_focus
-			       << "\nlyx_focus      : " << view->lyx_focus
-			       << endl;
-		}
-		if (tmpwin != view->owner_->getForm()->window) {
-			view->lyx_focus = false;
-			goto skip_timer;
-		} else {
-			view->lyx_focus = true;
-			if (!view->work_area_focus)
-				goto skip_timer;
-			else
-				goto set_timer_and_return;
-		}
-	}
-
-  set_timer_and_return:
-	fl_set_timer(ob, 0.4);
-  skip_timer:
-	return;
+    return pimpl_->workarea_->workWidth();
 }
 
 
-int BufferView::WorkAreaSelectionNotify(FL_OBJECT *, Window win,
-			    int /*w*/, int /*h*/, XEvent *event, void */*d*/)
+bool BufferView::belowMouse() const 
 {
-	if (buffer_ == 0) return 0;
-	if (event->type != SelectionNotify)
-		return 0;
-
-	Atom tmpatom;
-	unsigned long ul1;
-	unsigned long ul2;
-	unsigned char * uc = 0;
-	int tmpint;
-	screen->HideCursor();
-	BeforeChange();
-	if (event->xselection.type == XA_STRING
-	    && event->xselection.property) {
-    
-		if (XGetWindowProperty(
-			fl_display            /* display */,
-			win /* w */,
-			event->xselection.property        /* property */,
-			0                /* long_offset */,
-			0                /* long_length */,
-			false                /* delete */,
-			XA_STRING                /* req_type */,
-			&tmpatom               /* actual_type_return */,
-			&tmpint                /* actual_format_return */,
-			&ul1      /* nitems_return */,
-			&ul2      /* bytes_after_return */,
-			&uc     /* prop_return */
-			) != Success) {
-			return 0;
-		}
-		XFlush(fl_display);
-
-		if (uc){
-			free(uc);
-			uc = 0;
-		}
-
-		if (XGetWindowProperty(
-			fl_display           /* display */,
-			win              /* w */,
-			event->xselection.property           /* property */,
-			0                /* long_offset */,
-			ul2/4+1                /* long_length */,
-			True                /* delete */,
-			XA_STRING                /* req_type */,
-			&tmpatom               /* actual_type_return */,
-			&tmpint                /* actual_format_return */,
-			&ul1      /* nitems_return */,
-			&ul2      /* bytes_after_return */,
-			&uc     /* prop_return */
-			) != Success) {
-			return 0;
-		}
-		XFlush(fl_display);
-        
-		if (uc){
-			if (!ascii_type) {
-				buffer_->text->
-					InsertStringA(reinterpret_cast<char*>(uc));
-			} else {
-				buffer_->text->
-					InsertStringB(reinterpret_cast<char*>(uc));
-			}
-			free(uc);
-			uc = 0;
-		}
-    
-		buffer_->update(1);
-	}
-	return 0;
+	return pimpl_->belowMouse();
 }
 
 
-void BufferView::cursorPrevious()
+void BufferView::showCursor()
 {
-	if (!buffer()->text->cursor.row->previous) return;
-	
-	long y = getScreen()->first;
-	Row * cursorrow = buffer()->text->cursor.row;
-	buffer()->text->
-	  SetCursorFromCoordinates(buffer()->text->
-				   cursor.x_fix,
-				   y);
-	buffer()->text->FinishUndo();
-	// this is to allow jumping over large insets
-	if ((cursorrow == buffer()->text->cursor.row))
-	  buffer()->text->CursorUp();
-	
-  	if (buffer()->text->cursor.row->height < work_area->h)
-	  getScreen()->Draw(buffer()->text->cursor.y
-  			    - buffer()->text->cursor.row->baseline
-  			    + buffer()->text->cursor.row->height
-  			    - work_area->h +1 );
+	pimpl_->showCursor();
 }
 
 
-void BufferView::cursorNext()
+void BufferView::hideCursor()
 {
-	if (!buffer()->text->cursor.row->next) return;
-	
-	long y = getScreen()->first;
-	buffer()->text->GetRowNearY(y);
-	Row * cursorrow = buffer()->text->cursor.row;
-	buffer()->text->
-		SetCursorFromCoordinates(buffer()->text->
-					 cursor.x_fix, 
-					 y + work_area->h);
-	buffer()->text->FinishUndo();
-	/* this is to allow jumping over large insets */
-	if ((cursorrow == buffer()->text->cursor.row))
-	  buffer()->text->CursorDown();
-	
- 	if (buffer()->text->cursor.row->height < work_area->h)
- 	  getScreen()->Draw(buffer()->text->cursor.y
- 			    - buffer()->text->cursor.row->baseline);
+	pimpl_->hideCursor();
 }
 
 
-bool BufferView::available() const
+void BufferView::toggleSelection(bool b)
+{
+	pimpl_->toggleSelection(b);
+}
+
+
+void BufferView::toggleToggle()
+{
+	pimpl_->toggleToggle();
+}
+
+
+void BufferView::center() 
 {
-	if (buffer_ && buffer_->text) return true;
-	return false;
+	pimpl_->center();
 }
 
 
-void BufferView::savePosition()
+void BufferView::pasteClipboard(bool asPara)
 {
-	backstack.push(buffer()->getFileName(),
-			buffer()->text->cursor.x,
-			buffer()->text->cursor.y);
+	pimpl_->pasteClipboard(asPara);
 }
 
 
-void BufferView::restorePosition()
+void BufferView::stuffClipboard(string const & stuff) const
 {
-	if (backstack.empty()) return;
-	
-	int  x, y;
-	string fname = backstack.pop(&x, &y);
-	
-	BeforeChange();
-	Buffer * b = (bufferlist.exists(fname)) ? bufferlist.getBuffer(fname):
-		bufferlist.loadLyXFile(fname); // don't ask, just load it
-	buffer(b);
-	buffer()->text->SetCursorFromCoordinates(x, y);
-	buffer()->update(0);
-} 
+	pimpl_->stuffClipboard(stuff);
+}
+
+
+BufferView::UpdateCodes operator|(BufferView::UpdateCodes uc1,
+				  BufferView::UpdateCodes uc2)
+{
+	return static_cast<BufferView::UpdateCodes>
+		(static_cast<int>(uc1) | static_cast<int>(uc2));
+}
+
+bool BufferView::Dispatch(kb_action action, string const & argument)
+{
+    return pimpl_->Dispatch(action, argument);
+}