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* simplify notifyCursorLeaves logic: We now only call it from strategic
places, i.e. - BufferView::setMouseCursor, - BufferView::mouseEventDispatch - LyXFunc::dispatch Before it was called from several dispatch handlers in the middle of the dispatch process. Because the cursor might get invalidated, this is not a good idea. We had plenty of crashes and odd behaviours because of this as nobody really understood those cases. This fixes (at least) #2069 and #4163. git-svn-id: svn://svn.lyx.org/lyx/lyx-devel/trunk@23140 a592a061-630c-0410-9148-cb99ea01b6c8
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@ -1417,6 +1417,7 @@ void BufferView::mouseEventDispatch(FuncRequest const & cmd0)
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// LFUN_FILE_OPEN generated by drag-and-drop.
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FuncRequest cmd = cmd0;
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Cursor old = cursor();
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Cursor cur(*this);
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cur.push(buffer_.inset());
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cur.selection() = d->cursor_.selection();
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@ -1478,13 +1479,19 @@ void BufferView::mouseEventDispatch(FuncRequest const & cmd0)
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if (!cur.result().dispatched())
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cur.dispatch(cmd);
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//Do we have a selection?
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// Notify left insets
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if (cur != old) {
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old.fixIfBroken();
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bool badcursor = notifyCursorLeaves(old, cur);
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if (badcursor)
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cursor().fixIfBroken();
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}
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// Do we have a selection?
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theSelection().haveSelection(cursor().selection());
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// If the command has been dispatched,
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if (cur.result().dispatched()
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// an update is asked,
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&& cur.result().update())
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if (cur.result().dispatched() || cur.result().update())
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processUpdateFlags(cur.result().update());
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}
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@ -1675,8 +1682,12 @@ bool BufferView::mouseSetCursor(Cursor & cur, bool select)
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// Has the cursor just left the inset?
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bool badcursor = false;
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bool leftinset = (&d->cursor_.inset() != &cur.inset());
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if (leftinset)
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if (leftinset) {
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d->cursor_.fixIfBroken();
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badcursor = notifyCursorLeaves(d->cursor_, cur);
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if (badcursor)
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cur.fixIfBroken();
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}
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// FIXME: shift-mouse selection doesn't work well across insets.
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bool do_selection = select && &d->cursor_.anchor().inset() == &cur.inset();
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@ -1689,24 +1700,7 @@ bool BufferView::mouseSetCursor(Cursor & cur, bool select)
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if (!do_selection && !badcursor && d->cursor_.inTexted())
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update |= checkDepm(cur, d->cursor_);
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// if the cursor was in an empty script inset and the new
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// position is in the nucleus of the inset, notifyCursorLeaves
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// will kill the script inset itself. So we check all the
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// elements of the cursor to make sure that they are correct.
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// For an example, see bug 2933:
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// http://bugzilla.lyx.org/show_bug.cgi?id=2933
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// The code below could maybe be moved to a DocIterator method.
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//lyxerr << "cur before " << cur << endl;
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DocIterator dit = doc_iterator_begin(cur.inset());
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dit.bottom() = cur.bottom();
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size_t i = 1;
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while (i < cur.depth() && dit.nextInset() == &cur[i].inset()) {
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dit.push_back(cur[i]);
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++i;
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}
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//lyxerr << "5 cur after" << dit <<endl;
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d->cursor_.setCursor(dit);
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d->cursor_.setCursor(cur);
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d->cursor_.boundary(cur.boundary());
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if (do_selection)
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d->cursor_.setSelection();
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@ -377,8 +377,6 @@ void Cursor::pushBackward(Inset & p)
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bool Cursor::popBackward()
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{
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BOOST_ASSERT(!empty());
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//lyxerr << "Leaving inset from in front" << endl;
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inset().notifyCursorLeaves(*this);
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if (depth() == 1)
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return false;
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pop();
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@ -391,7 +389,6 @@ bool Cursor::popForward()
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BOOST_ASSERT(!empty());
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//lyxerr << "Leaving inset from in back" << endl;
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const pos_type lp = (depth() > 1) ? (*this)[depth() - 2].lastpos() : 0;
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inset().notifyCursorLeaves(*this);
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if (depth() == 1)
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return false;
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pop();
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@ -1768,7 +1765,7 @@ bool Cursor::fixIfBroken()
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}
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bool notifyCursorLeaves(DocIterator const & old, Cursor & cur)
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bool notifyCursorLeaves(Cursor const & old, Cursor & cur)
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{
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// find inset in common
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size_type i;
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@ -1780,7 +1777,9 @@ bool notifyCursorLeaves(DocIterator const & old, Cursor & cur)
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// notify everything on top of the common part in old cursor,
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// but stop if the inset claims the cursor to be invalid now
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for (; i < old.depth(); ++i) {
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if (old[i].inset().notifyCursorLeaves(cur))
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Cursor insetPos = old;
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insetPos.cutOff(i);
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if (old[i].inset().notifyCursorLeaves(insetPos, cur))
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return true;
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}
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@ -398,7 +398,7 @@ public:
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* Sure that the cursor old is valid, i.e. all inset pointers
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* point to valid insets! Use Cursor::fixIfBroken if necessary.
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*/
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bool notifyCursorLeaves(DocIterator const & old, Cursor & cur);
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bool notifyCursorLeaves(Cursor const & old, Cursor & cur);
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} // namespace lyx
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@ -1705,15 +1705,20 @@ void LyXFunc::dispatch(FuncRequest const & cmd)
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}
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// Let the current Cursor dispatch its own actions.
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Cursor old = view()->cursor();
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view()->cursor().getPos(cursorPosBeforeDispatchX_,
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cursorPosBeforeDispatchY_);
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view()->cursor().dispatch(cmd);
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updateFlags = view()->cursor().result().update();
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if (!view()->cursor().result().dispatched()) {
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// No update needed in this case (e.g. when reaching
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// top of document.
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updateFlags = Update::None;
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// notify insets we just left
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if (view()->cursor() != old) {
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old.fixIfBroken();
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bool badcursor = notifyCursorLeaves(old, view()->cursor());
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if (badcursor)
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view()->cursor().fixIfBroken();
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}
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updateFlags = view()->cursor().result().update();
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}
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if (lyx_view_ && lyx_view_->buffer()) {
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@ -590,10 +590,6 @@ void Text::dispatch(Cursor & cur, FuncRequest & cmd)
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bool up = cmd.action == LFUN_UP_SELECT || cmd.action == LFUN_UP;
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bool const successful = cur.upDownInText(up, needsUpdate);
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if (successful) {
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// notify insets which were left and get their update flags
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notifyCursorLeaves(cur.beforeDispatchCursor(), cur);
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cur.fixIfBroken();
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// redraw if you leave mathed (for the decorations)
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needsUpdate |= cur.beforeDispatchCursor().inMathed();
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} else
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@ -34,6 +34,7 @@ class Change;
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class Cursor;
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class CursorSlice;
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class Dimension;
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class DocIterator;
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class FuncRequest;
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class FuncStatus;
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class InsetCollapsable;
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@ -221,9 +222,8 @@ public:
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/// number of columns in gridlike structures
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virtual size_t ncols() const { return 0; }
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/// is called when the cursor leaves this inset
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/// returns true if cursor is now invalid. The cursor parameter
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/// is _not_ necessarily pointing to the inset.
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virtual bool notifyCursorLeaves(Cursor &) { return false; }
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/// returns true if cursor is now invalid.
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virtual bool notifyCursorLeaves(Cursor const &, Cursor &) { return false; }
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/// is called when the mouse enter or leave this inset
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/// return true if this inset needs repaint
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virtual bool setMouseHover(bool) { return false; }
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@ -414,7 +414,7 @@ void InsetMathHull::addPreview(graphics::PreviewLoader & ploader) const
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}
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bool InsetMathHull::notifyCursorLeaves(Cursor & cur)
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bool InsetMathHull::notifyCursorLeaves(Cursor const & /*old*/, Cursor & cur)
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{
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if (RenderPreview::status() == LyXRC::PREVIEW_ON) {
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Buffer const & buffer = cur.buffer();
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@ -1046,7 +1046,6 @@ void InsetMathHull::doDispatch(Cursor & cur, FuncRequest & cmd)
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case LFUN_FINISHED_LEFT:
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//lyxerr << "action: " << cmd.action << endl;
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InsetMathGrid::doDispatch(cur, cmd);
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notifyCursorLeaves(cur);
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cur.undispatched();
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break;
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@ -116,7 +116,7 @@ public:
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virtual void textString(Buffer const &, odocstream &) const;
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/// get notification when the cursor leaves this inset
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bool notifyCursorLeaves(Cursor & cur);
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bool notifyCursorLeaves(Cursor const & old, Cursor & cur);
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///
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//bool insetAllowed(InsetCode code) const;
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///
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@ -371,7 +371,7 @@ bool InsetMathNest::setMouseHover(bool mouse_hover)
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}
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bool InsetMathNest::notifyCursorLeaves(Cursor & /*cur*/)
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bool InsetMathNest::notifyCursorLeaves(Cursor const & /*old*/, Cursor & /*cur*/)
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{
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// FIXME: look here
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#if 0
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@ -584,12 +584,8 @@ void InsetMathNest::doDispatch(Cursor & cur, FuncRequest & cmd)
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// go up/down
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bool up = cmd.action == LFUN_UP || cmd.action == LFUN_UP_SELECT;
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bool successful = cur.upDownInMath(up);
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if (successful) {
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// notify left insets and give them chance to set update flags
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lyx::notifyCursorLeaves(cur.beforeDispatchCursor(), cur);
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cur.fixIfBroken();
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if (successful)
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break;
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}
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if (cur.fixIfBroken())
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// FIXME: Something bad happened. We pass the corrected Cursor
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@ -97,7 +97,7 @@ public:
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/// access to the lock
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void lock(bool);
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/// get notification when the cursor leaves this inset
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bool notifyCursorLeaves(Cursor & cur);
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bool notifyCursorLeaves(Cursor const & old, Cursor & cur);
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/// direct access to the cell.
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/// inlined because shows in profile.
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@ -660,9 +660,9 @@ void InsetMathScript::infoize2(odocstream & os) const
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}
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bool InsetMathScript::notifyCursorLeaves(Cursor & cur)
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bool InsetMathScript::notifyCursorLeaves(Cursor const & old, Cursor & cur)
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{
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InsetMathNest::notifyCursorLeaves(cur);
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InsetMathNest::notifyCursorLeaves(old, cur);
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//LYXERR0("InsetMathScript::notifyCursorLeaves: 1 " << cur);
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@ -690,14 +690,13 @@ bool InsetMathScript::notifyCursorLeaves(Cursor & cur)
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if ((nargs() == 2 && cell(1).empty())
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|| (nargs() == 3 && cell(1).empty() && cell(2).empty())) {
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// Make undo step. We cannot use cur for this because
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// it does not necessarily point to us. The BufferView
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// cursor though should do.
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int scriptSlice
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= cur.bv().cursor().find(this);
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// it does not necessarily point to us anymore. But we
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// should be on top of the cursor old.
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Cursor insetCur = old;
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int scriptSlice = insetCur.find(this);
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BOOST_ASSERT(scriptSlice != -1);
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Cursor & bvCur = cur.bv().cursor();
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bvCur.cutOff(scriptSlice);
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bvCur.recordUndoInset();
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insetCur.cutOff(scriptSlice);
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insetCur.recordUndoInset();
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// Let the script inset commit suicide. This is
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// modelled on Cursor.pullArg(), but tries not to
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@ -705,12 +704,9 @@ bool InsetMathScript::notifyCursorLeaves(Cursor & cur)
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// cur (since the top slice will be deleted
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// afterwards)
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MathData ar = cell(0);
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bvCur.pop();
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bvCur.cell().erase(bvCur.pos());
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bvCur.cell().insert(bvCur.pos(), ar);
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// put cursor behind
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bvCur.pos() += ar.size();
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insetCur.pop();
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insetCur.cell().erase(insetCur.pos());
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insetCur.cell().insert(insetCur.pos(), ar);
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// redraw
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cur.updateFlags(cur.disp_.update() | Update::SinglePar);
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/// where do we have to draw the scripts?
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bool hasLimits() const;
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/// clean up empty cells and return true if a cell has been deleted.
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bool notifyCursorLeaves(Cursor & cur);
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bool notifyCursorLeaves(Cursor const & old, Cursor & cur);
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/// possible subscript (index 0) and superscript (index 1)
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bool cell_1_is_up_;
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@ -606,10 +606,10 @@ bool MathMacro::idxLast(Cursor & cur) const
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}
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bool MathMacro::notifyCursorLeaves(Cursor & cur)
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bool MathMacro::notifyCursorLeaves(Cursor const & old, Cursor & cur)
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{
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cur.updateFlags(Update::Force);
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return InsetMathNest::notifyCursorLeaves(cur);
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return InsetMathNest::notifyCursorLeaves(old, cur);
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}
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bool idxLast(Cursor &) const;
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///
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virtual bool notifyCursorLeaves(Cursor &);
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virtual bool notifyCursorLeaves(Cursor const & old, Cursor & cur);
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/// Remove cell (starting from 0)
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void removeArgument(pos_type pos);
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@ -538,11 +538,11 @@ void MathMacroTemplate::edit(Cursor & cur, bool front, EntryDirection entry_from
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}
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bool MathMacroTemplate::notifyCursorLeaves(Cursor & cur)
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bool MathMacroTemplate::notifyCursorLeaves(Cursor const & old, Cursor & cur)
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{
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updateLook();
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cur.updateFlags(Update::Force);
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return InsetMathNest::notifyCursorLeaves(cur);
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return InsetMathNest::notifyCursorLeaves(old, cur);
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}
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///
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void edit(Cursor & cur, bool front, EntryDirection entry_from);
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///
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bool notifyCursorLeaves(Cursor & cur);
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bool notifyCursorLeaves(Cursor const & old, Cursor & cur);
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///
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void read(Buffer const &, Lexer & lex);
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///
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