def detectSyntax(self,
xmlFileName=None,
mimeType=None,
language=None,
sourceFilePath=None,
firstLine=None):
"""Get syntax by next parameters (fill as many, as known):
* name of XML file with syntax definition
* MIME type of source file
* Programming language name
* Source file path
* First line of source file
First parameter in the list has the hightest priority.
Old syntax is always cleared, even if failed to detect new.
Method returns ``True``, if syntax is detected, and ``False`` otherwise
"""
oldLanguage = self.language()
self.clearSyntax()
syntax = self._globalSyntaxManager.getSyntax(
SyntaxHighlighter.formatConverterFunction,
xmlFileName=xmlFileName,
mimeType=mimeType,
languageName=language,
sourceFilePath=sourceFilePath,
firstLine=firstLine)
if syntax is not None:
self._highlighter = SyntaxHighlighter(syntax, self)
self._indenter.setSyntax(syntax)
newLanguage = self.language()
if oldLanguage != newLanguage:
self.languageChanged.emit(newLanguage)
return syntax is not None
