+int MathData::kerning(BufferView const * bv) const
+{
+ return bv->mathRow(this).kerning(bv);
+}
+
+
+void MathData::updateBuffer(ParIterator const & it, UpdateType utype)
+{
+ // pass down
+ for (size_t i = 0, n = size(); i != n; ++i) {
+ MathAtom & at = operator[](i);
+ at.nucleus()->updateBuffer(it, utype);
+ }
+}
+
+
+void MathData::updateMacros(Cursor * cur, MacroContext const & mc,
+ UpdateType utype, int nesting)
+{
+ // If we are editing a macro, we cannot update it immediately,
+ // otherwise wrong undo steps will be recorded (bug 6208).
+ InsetMath const * inmath = cur ? cur->inset().asInsetMath() : 0;
+ InsetMathMacro const * inmacro = inmath ? inmath->asMacro() : 0;
+ docstring const edited_name = inmacro ? inmacro->name() : docstring();
+
+ // go over the array and look for macros
+ for (size_t i = 0; i < size(); ++i) {
+ InsetMathMacro * macroInset = operator[](i).nucleus()->asMacro();
+ if (!macroInset || macroInset->macroName().empty()
+ || macroInset->macroName()[0] == '^'
+ || macroInset->macroName()[0] == '_'
+ || (macroInset->name() == edited_name
+ && macroInset->displayMode() ==
+ InsetMathMacro::DISPLAY_UNFOLDED))
+ continue;
+
+ // get macro
+ macroInset->updateMacro(mc);
+ size_t macroNumArgs = 0;
+ size_t macroOptionals = 0;
+ MacroData const * macro = macroInset->macro();
+ if (macro) {
+ macroNumArgs = macro->numargs();
+ macroOptionals = macro->optionals();
+ }
+
+ // store old and compute new display mode
+ InsetMathMacro::DisplayMode newDisplayMode;
+ InsetMathMacro::DisplayMode oldDisplayMode = macroInset->displayMode();
+ newDisplayMode = macroInset->computeDisplayMode();
+
+ // arity changed or other reason to detach?
+ if (oldDisplayMode == InsetMathMacro::DISPLAY_NORMAL
+ && (macroInset->arity() != macroNumArgs
+ || macroInset->optionals() != macroOptionals
+ || newDisplayMode == InsetMathMacro::DISPLAY_UNFOLDED))
+ detachMacroParameters(cur, i);
+
+ // the macro could have been copied while resizing this
+ macroInset = operator[](i).nucleus()->asMacro();
+
+ // Cursor in \label?
+ if (newDisplayMode != InsetMathMacro::DISPLAY_UNFOLDED
+ && oldDisplayMode == InsetMathMacro::DISPLAY_UNFOLDED) {
+ // put cursor in front of macro
+ if (cur) {
+ int macroSlice = cur->find(macroInset);
+ if (macroSlice != -1)
+ cur->cutOff(macroSlice - 1);
+ }
+ }
+
+ // update the display mode
+ size_t appetite = macroInset->appetite();
+ macroInset->setDisplayMode(newDisplayMode);
+
+ // arity changed?
+ if (newDisplayMode == InsetMathMacro::DISPLAY_NORMAL
+ && (macroInset->arity() != macroNumArgs
+ || macroInset->optionals() != macroOptionals)) {
+ // is it a virgin macro which was never attached to parameters?
+ bool fromInitToNormalMode
+ = (oldDisplayMode == InsetMathMacro::DISPLAY_INIT
+ || oldDisplayMode == InsetMathMacro::DISPLAY_INTERACTIVE_INIT)
+ && newDisplayMode == InsetMathMacro::DISPLAY_NORMAL;
+
+ // if the macro was entered interactively (i.e. not by paste or during
+ // loading), it should not be greedy, but the cursor should
+ // automatically jump into the macro when behind
+ bool interactive = (oldDisplayMode == InsetMathMacro::DISPLAY_INTERACTIVE_INIT);
+
+ // attach parameters
+ attachMacroParameters(cur, i, macroNumArgs, macroOptionals,
+ fromInitToNormalMode, interactive, appetite);
+
+ if (cur)
+ cur->updateInsets(&cur->bottom().inset());
+ }
+
+ // Give macro the chance to adapt to new situation.
+ // The macroInset could be invalid now because it was put into a script
+ // inset and therefore "deep" copied. So get it again from the MathData.
+ InsetMath * inset = operator[](i).nucleus();
+ if (inset->asScriptInset())
+ inset = inset->asScriptInset()->nuc()[0].nucleus();
+ LASSERT(inset->asMacro(), continue);
+ inset->asMacro()->updateRepresentation(cur, mc, utype, nesting + 1);
+ }
+}
+
+
+void MathData::detachMacroParameters(DocIterator * cur, const size_type macroPos)
+{
+ InsetMathMacro * macroInset = operator[](macroPos).nucleus()->asMacro();
+ // We store this now, because the inset pointer will be invalidated in the scond loop below
+ size_t const optionals = macroInset->optionals();
+
+ // detach all arguments
+ vector<MathData> detachedArgs;
+ if (macroPos + 1 == size())
+ // strip arguments if we are at the MathData end
+ macroInset->detachArguments(detachedArgs, true);
+ else
+ macroInset->detachArguments(detachedArgs, false);
+
+ // find cursor slice
+ int curMacroSlice = -1;
+ if (cur)
+ curMacroSlice = cur->find(macroInset);
+ idx_type curMacroIdx = -1;
+ pos_type curMacroPos = -1;
+ vector<CursorSlice> argSlices;
+ if (curMacroSlice != -1) {
+ curMacroPos = (*cur)[curMacroSlice].pos();
+ curMacroIdx = (*cur)[curMacroSlice].idx();
+ cur->cutOff(curMacroSlice, argSlices);
+ cur->pop_back();
+ }
+
+ // only [] after the last non-empty argument can be dropped later
+ size_t lastNonEmptyOptional = 0;
+ for (size_t l = 0; l < detachedArgs.size() && l < optionals; ++l) {
+ if (!detachedArgs[l].empty())
+ lastNonEmptyOptional = l;
+ }
+
+ // optional arguments to be put back?
+ pos_type p = macroPos + 1;
+ size_t j = 0;
+ // We do not want to use macroInset below, the insert() call in
+ // the loop will invalidate it.
+ macroInset = 0;
+ for (; j < detachedArgs.size() && j < optionals; ++j) {
+ // another non-empty parameter follows?
+ bool canDropEmptyOptional = j >= lastNonEmptyOptional;
+
+ // then we can drop empty optional parameters
+ if (detachedArgs[j].empty() && canDropEmptyOptional) {
+ if (curMacroIdx == j)
+ (*cur)[curMacroSlice - 1].pos() = macroPos + 1;
+ continue;
+ }
+
+ // Otherwise we don't drop an empty optional, put it back normally
+ MathData optarg;
+ asArray(from_ascii("[]"), optarg);
+ MathData & arg = detachedArgs[j];
+
+ // look for "]", i.e. put a brace around?
+ InsetMathBrace * brace = 0;
+ for (size_t q = 0; q < arg.size(); ++q) {
+ if (arg[q]->getChar() == ']') {
+ // put brace
+ brace = new InsetMathBrace(buffer_);
+ break;
+ }
+ }
+
+ // put arg between []
+ if (brace) {
+ brace->cell(0) = arg;
+ optarg.insert(1, MathAtom(brace));
+ } else
+ optarg.insert(1, arg);
+
+ // insert it into the array
+ insert(p, optarg);
+ p += optarg.size();
+
+ // cursor in macro?
+ if (curMacroSlice == -1)
+ continue;
+
+ // cursor in optional argument of macro?
+ if (curMacroIdx == j) {
+ if (brace) {
+ cur->append(0, curMacroPos);
+ (*cur)[curMacroSlice - 1].pos() = macroPos + 2;
+ } else
+ (*cur)[curMacroSlice - 1].pos() = macroPos + 2 + curMacroPos;
+ cur->append(argSlices);
+ } else if ((*cur)[curMacroSlice - 1].pos() >= int(p))
+ // cursor right of macro
+ (*cur)[curMacroSlice - 1].pos() += optarg.size();
+ }
+
+ // put them back into the MathData
+ for (; j < detachedArgs.size(); ++j, ++p) {
+ MathData const & arg = detachedArgs[j];
+ if (arg.size() == 1
+ && !arg[0]->asScriptInset()
+ && !(arg[0]->asMacro() && arg[0]->asMacro()->arity() > 0))
+ insert(p, arg[0]);
+ else
+ insert(p, MathAtom(new InsetMathBrace(arg)));
+
+ // cursor in macro?
+ if (curMacroSlice == -1)
+ continue;
+
+ // cursor in j-th argument of macro?
+ if (curMacroIdx == j) {
+ if (operator[](p).nucleus()->asBraceInset()) {
+ (*cur)[curMacroSlice - 1].pos() = p;
+ cur->append(0, curMacroPos);
+ cur->append(argSlices);
+ } else {
+ (*cur)[curMacroSlice - 1].pos() = p; // + macroPos;
+ cur->append(argSlices);
+ }
+ } else if ((*cur)[curMacroSlice - 1].pos() >= int(p))
+ ++(*cur)[curMacroSlice - 1].pos();
+ }
+
+ if (cur)
+ cur->updateInsets(&cur->bottom().inset());
+}
+
+
+void MathData::attachMacroParameters(Cursor * cur,
+ const size_type macroPos, const size_type macroNumArgs,
+ const int macroOptionals, const bool fromInitToNormalMode,
+ const bool interactiveInit, const size_t appetite)