/* TextEditor::openCalltip
* Opens a calltip for the function name before [pos]. Returns false
* if the word before [pos] was not a function name, true otherwise
*******************************************************************/
bool TextEditor::openCalltip(int pos, int arg)
{
// Don't bother if no language
if (!language)
return false;
// Get start of word before bracket
int start = WordStartPosition(pos - 1, false);
// Get word before bracket
string word = GetTextRange(WordStartPosition(start, true), WordEndPosition(start, true));
// Get matching language function (if any)
TLFunction* func = language->getFunction(word);
// Show calltip if it's a function
if (func && func->nArgSets() > 0)
{
CallTipShow(pos, func->generateCallTipString());
ct_function = func;
ct_argset = 0;
ct_start = pos;
// Highlight arg
point2_t arg_ext = ct_function->getArgTextExtent(arg);
CallTipSetHighlight(arg_ext.x, arg_ext.y);
return true;
}
else
{
ct_function = NULL;
return false;
}
}
void MaterialScriptEditor::OnCharAdded(wxScintillaEvent &event)
{
ScintillaEditor::OnCharAdded(event);
char ch = event.GetKey();
if(getCallTipManager().isTrigger(ch))
{
int lineNum = GetCurrentLine();
if(lineNum != -1)
{
wxString line = GetLine(lineNum);
int pos = GetCurrentPos() - 1;
wxString word("");
wxChar ch;
while(pos)
{
ch = GetCharAt(--pos);
if(ch != ' ' && ch != '\n' && ch != '\r' && ch != '\t' && ch != '{' && ch != '}') word.Prepend(ch);
else break;
}
wxString* tips = getCallTipManager().find(word);
if(tips != NULL)
{
CallTipShow(pos, *tips);
}
}
}
}
void Edit::OnKeyDown (wxKeyEvent &event)
{
if (CallTipActive())
CallTipCancel();
if (event.GetKeyCode() == WXK_SPACE && event.ControlDown() && event.ShiftDown())
{
int pos = GetCurrentPos();
CallTipSetBackground(*wxYELLOW);
CallTipShow(pos,
"This is a CallTip with multiple lines.\n"
"It is meant to be a context sensitive popup helper for the user.");
return;
}
event.Skip();
}
/* TextEditor::updateCalltip
* Updates the current calltip, or attempts to open one if none is
* currently showing
*******************************************************************/
void TextEditor::updateCalltip()
{
// Don't bother if no language
if (!language)
return;
if (!CallTipActive())
{
// No calltip currently showing, check if we're in a function
int pos = GetCurrentPos() - 1;
while (pos >= 0)
{
// Get character
int chr = GetCharAt(pos);
// If we find a closing bracket, skip to matching brace
if (chr == ')')
{
while (pos >= 0 && chr != '(')
{
pos--;
chr = GetCharAt(pos);
}
pos--;
continue;
}
// If we find an opening bracket, try to open a calltip
if (chr == '(')
{
if (!openCalltip(pos))
return;
else
break;
}
// Go to previous character
pos--;
}
}
if (ct_function)
{
// Calltip currently showing, determine what arg we're at
int pos = ct_start+1;
int arg = 0;
while (pos < GetCurrentPos() && pos < GetTextLength())
{
// Get character
int chr = GetCharAt(pos);
// If it's an opening brace, skip until closing (ie skip a function as an arg)
if (chr == '(')
{
while (chr != ')')
{
// Exit if we get to the current position or the end of the text
if (pos == GetCurrentPos() || pos == GetTextLength()-1)
break;
// Get next character
pos++;
chr = GetCharAt(pos);
}
pos++;
continue;
}
// If it's a comma, increment arg
if (chr == ',')
arg++;
// If it's a closing brace, we're outside the function, so cancel the calltip
if (chr == ')')
{
CallTipCancel();
ct_function = NULL;
return;
}
// Go to next character
pos++;
}
// Update calltip string with the selected arg set and the current arg highlighted
CallTipShow(ct_start, ct_function->generateCallTipString(ct_argset));
point2_t arg_ext = ct_function->getArgTextExtent(arg, ct_argset);
CallTipSetHighlight(arg_ext.x, arg_ext.y);
}
}
