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@ -4,6 +4,7 @@ import pygtk
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pygtk.require('2.0')
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import gtk
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import pango
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import xml.sax
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class RichTextBuffer(gtk.TextBuffer):
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def __init__(self):
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@ -32,12 +33,6 @@ class RichTextBuffer(gtk.TextBuffer):
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pos_end = pos.copy()
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pos_end.backward_chars(length)
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self.apply_tag_by_name(tag, pos, pos_end)
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def to_xml():
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next_iter = buffer.get_start_iter()
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while not next_iter.is_end():
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class RichTextToolbar(gtk.Toolbar):
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def __init__(self, buf):
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@ -60,9 +55,100 @@ class RichTextToolbar(gtk.Toolbar):
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self.buf.apply_tag(tag_name)
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else:
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self.buf.unapply_tag(tag_name)
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class RichTextHandler(xml.sax.handler.ContentHandler):
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def __init__(self, buf):
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self.buf = buf
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self.tags = []
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def _deserialize_element(self, el_name):
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if el_name == "bold":
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return "bold"
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elif el_name == "italic":
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return "italic"
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else:
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return None
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def startElement(self, name, attributes):
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tag = self._deserialize_element(name)
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if tag:
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self.tags.append(tag)
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def characters(self, data):
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start_it = it = self.buf.get_end_iter()
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mark = self.buf.create_mark(None, start_it, True)
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self.buf.insert(it, data)
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start_it = self.buf.get_iter_at_mark(mark)
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for tag in self.tags:
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self.buf.apply_tag_by_name(tag, start_it, it)
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def endElement(self, name):
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tag = self._deserialize_element(name)
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if tag:
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self.tags.remove(tag)
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class RichTextSerializer:
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def __init__(self):
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self._open_xml_tags = []
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def _get_xml_tag(self, tag):
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if tag.get_property("name") == "bold":
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return "bold"
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elif tag.get_property("name") == "italic":
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return "italic"
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else:
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return "unknown_tag"
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def serialize(self, buf):
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xml = "<richtext>"
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next_it = buf.get_start_iter()
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while not next_it.is_end():
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it = next_it.copy()
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if not next_it.forward_to_tag_toggle(None):
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next_it = buf.get_end_iter()
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reopen_xml_tags = []
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for tag in it.get_toggled_tags(False):
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xml_tag = self._get_xml_tag(tag)
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while 1:
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open_xml_tag = self._open_xml_tags.pop()
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if open_xml_tag != xml_tag:
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xml += "</" + open_xml_tag + ">"
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reopen_xml_tags.append(open_xml_tag)
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else:
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xml += "</" + xml_tag + ">"
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break
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for xml_tag in reopen_xml_tags:
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self._open_xml_tags.append(xml_tag)
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xml += "<" + xml_tag + ">"
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for tag in it.get_toggled_tags(True):
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xml_tag = self._get_xml_tag(tag)
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self._open_xml_tags.append(xml_tag)
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xml += "<" + xml_tag + ">"
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xml += buf.get_text(it, next_it)
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if next_it.is_end():
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for xml_tag in self._open_xml_tags:
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xml += "</" + xml_tag + ">"
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xml += "</richtext>"
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return xml
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def deserialize(self, xml_string, buf):
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parser = xml.sax.make_parser()
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handler = RichTextHandler(buf)
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parser.setContentHandler(handler)
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parser.feed(xml_string)
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parser.close()
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def test_quit(window, rich_buf):
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print rich_buf.to_xml()
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print RichTextSerializer().serialize(rich_buf)
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gtk.main_quit()
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if __name__ == "__main__":
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@ -73,6 +159,9 @@ if __name__ == "__main__":
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rich_buf = RichTextBuffer()
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xml_string = "<richtext><bold><italic>Hello</italic>World</bold></richtext>"
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RichTextSerializer().deserialize(xml_string, rich_buf)
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view = gtk.TextView(rich_buf)
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vbox.pack_start(view)
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view.show()
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