[syntax_highlight] Integrate with master branch

This commit contains all changes starting with the first integration of
the plugin into the gajim_1.1 branch (76dabe2) until the current plugin
version V3 (42b9aeb).
The manifest.ini is updated for compatibility with upcoming Gajim
versions.

syntax_highlight/plugin_config_dialog.py

@@ -0,0 +1,169 @@
+import re
+import pygments
+
+from gi.repository import Gtk, Gdk
+from gi.repository.Pango import FontDescription
+
+
+from gajim.plugins.gui import GajimPluginConfigDialog
+from gajim.plugins.helpers import log_calls
+
+
+from .gtkformatter import GTKFormatter
+from .types import LineBreakOptions, CodeMarkerOptions
+
+class SyntaxHighlighterPluginConfiguration(GajimPluginConfigDialog):
+    @log_calls('SyntaxHighlighterPluginConfiguration')
+    def init(self):
+        self.GTK_BUILDER_FILE_PATH = self.plugin.local_file_path(
+            'config_dialog.ui')
+        self.xml = Gtk.Builder()
+        self.xml.set_translation_domain('gajim_plugins')
+        self.xml.add_objects_from_file(self.GTK_BUILDER_FILE_PATH,
+                ['mainBox', 'line_break_selection', 'code_marker_selection',
+                    'preview_textbuffer'])
+        box = self.xml.get_object('mainBox')
+        self.get_child().pack_start(box, False, False, 0)
+        self.result_label = self.xml.get_object('result_label')
+
+        self.liststore = Gtk.ListStore(str)
+
+        self.default_lexer_combobox = self.xml.get_object('default_lexer_combobox')
+        self.default_lexer_combobox.set_property("model", self.liststore)
+
+        self.style_liststore = Gtk.ListStore(str)
+        self.style_combobox = self.xml.get_object('style_combobox')
+        self.style_combobox.set_property("model", self.style_liststore)
+
+        self.bg_color_checkbox    = self.xml.get_object('bg_color_checkbutton')
+        self.bg_color_colorbutton = self.xml.get_object('bg_color_colorbutton')
+
+        self.line_break_combobox  = self.xml.get_object('line_break_combobox')
+
+        self.code_marker_combobox = self.xml.get_object('code_marker_combobox')
+
+        self.preview_textview     = self.xml.get_object('preview_textview')
+        self.preview_textview.get_buffer().connect("insert-text", self.on_preview_text_inserted)
+        self.preview_textview.set_size_request(-1, 130)
+
+        self.font_button          = self.xml.get_object('font_button')
+
+        self.xml.connect_signals(self)
+        self.default_lexer_id   = 0
+        self.style_id           = 0
+
+    def set_config(self, config):
+        self.config     = config
+        self.lexers     = self.config.get_lexer_list()
+        self.styles     = self.config.get_styles_list()
+        default_lexer   = self.config.get_default_lexer_name()
+        default_style   = self.config.get_style_name()
+
+        for i, lexer in enumerate(self.lexers):
+            self.liststore.append([lexer[0]])
+            if lexer[1] == default_lexer:
+                self.default_lexer_id = i
+
+        for i, style in enumerate(self.styles):
+            self.style_liststore.append([style])
+            if style == default_style:
+                self.style_id = i
+        self.update_preview()
+
+    def lexer_changed(self, _widget):
+        new = self.default_lexer_combobox.get_active()
+        if new != self.default_lexer_id:
+            self.default_lexer_id = new
+            self.config.set_default_lexer(self.lexers[self.default_lexer_id][1])
+            self.update_preview()
+
+    def line_break_changed(self, _widget):
+        new = LineBreakOptions(self.line_break_combobox.get_active())
+        if new != self.config.get_line_break_action():
+            self.config.set_line_break_action(new)
+            self.update_preview()
+
+    def code_marker_changed(self, _widget):
+        new = CodeMarkerOptions(self.code_marker_combobox.get_active())
+        if new != self.config.get_code_marker_setting():
+            self.config.set_code_marker_setting(new)
+
+    def bg_color_enabled(self, _widget):
+        new = self.bg_color_checkbox.get_active()
+        if new != self.config.is_bgcolor_override_enabled():
+            bg_override_enabled = new
+            self.config.set_bgcolor_override_enabled(bg_override_enabled)
+            self.bg_color_colorbutton.set_sensitive(bg_override_enabled)
+            self.update_preview()
+
+    def bg_color_changed(self, _widget):
+        new = self.bg_color_colorbutton.get_color()
+        if new != self.config.get_bgcolor():
+            self.config.set_bgcolor(new)
+            self.update_preview()
+
+    def style_changed(self, _widget):
+        new = self.style_combobox.get_active()
+        if new != self.style_id:
+            self.style_id = new
+            self.config.set_style(self.styles[self.style_id])
+            self.update_preview()
+
+    def font_changed(self, _widget):
+        new = self.font_button.get_font()
+        if new != self.config.get_font():
+            self.config.set_font(new)
+            self.update_preview()
+
+    def update_preview(self):
+        self.format_preview_text()
+
+    def on_preview_text_inserted(self, _buf, _iterator, text, length, *_args):
+        if (length == 1 and re.match(r'\s', text)) or length > 1:
+            self.format_preview_text()
+
+    def format_preview_text(self):
+        buf = self.preview_textview.get_buffer()
+        start_iter = buf.get_start_iter()
+        start_mark = buf.create_mark(None, start_iter, True)
+        buf.remove_all_tags(start_iter, buf.get_end_iter())
+
+        formatter = GTKFormatter(
+                style=self.config.get_style_name(),
+                start_mark=start_mark)
+
+        code    = start_iter.get_text(buf.get_end_iter())
+        lexer   = self.config.get_default_lexer()
+        if not self.config.is_internal_none_lexer(lexer):
+            tokens  = pygments.lex(code, lexer)
+
+            pygments.format(tokens, formatter, buf)
+
+        buf.delete_mark(start_mark)
+
+        self.preview_textview.override_font(
+                FontDescription.from_string(self.config.get_font()))
+
+        color = Gdk.RGBA()
+        if color.parse(self.config.get_bgcolor()):
+            self.preview_textview.override_background_color(
+                    Gtk.StateFlags.NORMAL, color)
+
+    def on_run(self):
+        self.default_lexer_combobox.set_active(self.default_lexer_id)
+        self.line_break_combobox.set_active(self.config.get_line_break_action())
+        self.code_marker_combobox.set_active(self.config.get_code_marker_setting())
+        self.style_combobox.set_active(self.style_id)
+
+        self.font_button.set_font(self.config.get_font())
+
+        bg_override_enabled = self.config.is_bgcolor_override_enabled()
+        self.bg_color_checkbox.set_active(bg_override_enabled)
+
+        self.bg_color_colorbutton.set_sensitive(bg_override_enabled)
+
+        parsed, color = Gdk.Color.parse(self.config.get_bgcolor())
+        if parsed:
+            self.bg_color_colorbutton.set_color(color)
+
+