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https://gitlab.freedesktop.org/gstreamer/gstreamer.git
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494 lines
16 KiB
Python
494 lines
16 KiB
Python
# -*- coding: utf-8; mode: python; -*-
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#
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# GStreamer Debug Viewer - View and analyze GStreamer debug log files
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#
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# Copyright (C) 2007 René Stadler <mail@renestadler.de>
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#
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# This program is free software; you can redistribute it and/or modify it
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# under the terms of the GNU General Public License as published by the Free
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# Software Foundation; either version 3 of the License, or (at your option)
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# any later version.
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#
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# This program is distributed in the hope that it will be useful, but WITHOUT
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# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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# FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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# more details.
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#
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# You should have received a copy of the GNU General Public License along with
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# this program. If not, see <http://www.gnu.org/licenses/>.
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"""GStreamer Debug Viewer timeline widget plugin."""
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import logging
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from GstDebugViewer import Common, Data, GUI
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from GstDebugViewer.Plugins import FeatureBase, PluginBase, _N
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from gettext import gettext as _
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from gi.repository import GObject, GLib
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from gi.repository import Gtk
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class SearchOperation (object):
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def __init__(self, model, search_text, search_forward=True, start_position=None):
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self.model = model
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self.search_text = search_text
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self.search_forward = search_forward
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self.start_position = start_position
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col_id = GUI.models.LogModelBase.COL_MESSAGE
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len_search_text = len(search_text)
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def match_func(model_row):
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message = model_row[col_id]
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if search_text in message:
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ranges = []
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start = 0
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while True:
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pos = message.find(search_text, start)
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if pos == -1:
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break
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ranges.append((pos, pos + len_search_text,))
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start = pos + len_search_text
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return ranges
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else:
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return ()
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self.match_func = match_func
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class SearchSentinel (object):
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def __init__(self):
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self.dispatcher = Common.Data.GSourceDispatcher()
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self.cancelled = False
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def run_for(self, operation):
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self.dispatcher.cancel()
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self.dispatcher(self.__process(operation))
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self.cancelled = False
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def abort(self):
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self.dispatcher.cancel()
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self.cancelled = True
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def __process(self, operation):
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model = operation.model
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if operation.start_position is not None:
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start_pos = operation.start_position
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elif operation.search_forward:
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start_pos = 0
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else:
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start_pos = len(model) - 1
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start_iter = model.iter_nth_child(None, start_pos)
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match_func = operation.match_func
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if operation.search_forward:
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iter_next = model.iter_next
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else:
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# FIXME: This is really ugly.
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nth_child = model.iter_nth_child
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def iter_next_():
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for i in xrange(start_pos, -1, -1):
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yield nth_child(None, i)
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yield None
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it_ = iter_next_()
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def iter_next(it):
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return it_.next()
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YIELD_LIMIT = 1000
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i = YIELD_LIMIT
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tree_iter = start_iter
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while tree_iter and not self.cancelled:
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i -= 1
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if i == 0:
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yield True
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i = YIELD_LIMIT
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row = model[tree_iter]
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if match_func(row):
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self.handle_match_found(model, tree_iter)
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tree_iter = iter_next(tree_iter)
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if not self.cancelled:
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self.handle_search_complete()
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yield False
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def handle_match_found(self, model, tree_iter):
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pass
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def handle_search_complete(self):
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pass
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class FindBarWidget (Gtk.HBox):
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__status = {"no-match-found": _N("No match found"),
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"searching": _N("Searching...")}
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def __init__(self, action_group):
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GObject.GObject.__init__(self)
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label = Gtk.Label(label=_("Find:"))
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self.pack_start(label, False, False, 2)
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self.entry = Gtk.Entry()
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self.pack_start(self.entry, True, True, 0)
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prev_action = action_group.get_action("goto-previous-search-result")
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prev_button = Gtk.Button()
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prev_button.set_related_action(prev_action)
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self.pack_start(prev_button, False, False, 0)
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next_action = action_group.get_action("goto-next-search-result")
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next_button = Gtk.Button()
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next_button.set_related_action(next_action)
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self.pack_start(next_button, False, False, 0)
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self.status_label = Gtk.Label()
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self.status_label.props.xalign = 0.
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self.status_label.props.use_markup = True
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self.pack_start(self.status_label, False, False, 6)
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self.__compute_status_size()
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self.status_label.connect("notify::style", self.__handle_notify_style)
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self.show_all()
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def __compute_status_size(self):
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label = self.status_label
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old_markup = label.props.label
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label.set_size_request(-1, -1)
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max_width = 0
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try:
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for status in self.__status.values():
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self.__set_status(_(status))
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req = label.size_request()
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max_width = max(max_width, req.width)
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label.set_size_request(max_width, -1)
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finally:
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label.props.label = old_markup
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def __handle_notify_style(self, *a, **kw):
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self.__compute_status_size()
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def __set_status(self, text):
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markup = "<b>%s</b>" % (GLib.markup_escape_text(text),)
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self.status_label.props.label = markup
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def status_no_match_found(self):
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self.__set_status(_(self.__status["no-match-found"]))
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def status_searching(self):
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self.__set_status(_(self.__status["searching"]))
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def clear_status(self):
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self.__set_status("")
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class FindBarFeature (FeatureBase):
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def __init__(self, app):
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FeatureBase.__init__(self, app)
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self.logger = logging.getLogger("ui.findbar")
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self.action_group = Gtk.ActionGroup("FindBarActions")
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self.action_group.add_toggle_actions([("show-find-bar",
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None,
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_("Find Bar"),
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"<Ctrl>F")])
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self.action_group.add_actions([("goto-next-search-result",
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None, _("Goto Next Match"),
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"<Ctrl>G"),
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("goto-previous-search-result",
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None, _("Goto Previous Match"),
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"<Ctrl><Shift>G")])
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self.bar = None
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self.operation = None
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self.search_state = None
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self.next_match = None
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self.prev_match = None
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self.scroll_match = False
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self.sentinel = SearchSentinel()
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self.sentinel.handle_match_found = self.handle_match_found
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self.sentinel.handle_search_complete = self.handle_search_complete
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def scroll_view_to_line(self, line_index):
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view = self.log_view
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path = Gtk.TreePath((line_index,))
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start_path, end_path = view.get_visible_range()
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if path >= start_path and path <= end_path:
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self.logger.debug(
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"line index %i already visible, not scrolling", line_index)
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return
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self.logger.debug("scrolling to line_index %i", line_index)
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view.scroll_to_cell(path, use_align=True, row_align=.5)
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def handle_attach_window(self, window):
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self.window = window
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ui = window.ui_manager
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ui.insert_action_group(self.action_group, 0)
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self.log_view = window.log_view
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self.merge_id = ui.new_merge_id()
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for name, action_name in [("ViewFindBar", "show-find-bar",),
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("ViewNextResult",
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"goto-next-search-result",),
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("ViewPrevResult", "goto-previous-search-result",)]:
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ui.add_ui(self.merge_id, "/menubar/ViewMenu/ViewMenuAdditions",
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name, action_name, Gtk.UIManagerItemType.MENUITEM, False)
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box = window.widgets.vbox_view
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self.bar = FindBarWidget(self.action_group)
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box.pack_end(self.bar, False, False, 0)
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self.bar.hide()
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action = self.action_group.get_action("show-find-bar")
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handler = self.handle_show_find_bar_action_toggled
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action.connect("toggled", handler)
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action = self.action_group.get_action("goto-previous-search-result")
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handler = self.handle_goto_previous_search_result_action_activate
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action.props.sensitive = False
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action.connect("activate", handler)
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action = self.action_group.get_action("goto-next-search-result")
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handler = self.handle_goto_next_search_result_action_activate
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action.props.sensitive = False
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action.connect("activate", handler)
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self.bar.entry.connect("changed", self.handle_entry_changed)
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def handle_detach_window(self, window):
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self.window = None
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window.ui_manager.remove_ui(self.merge_id)
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self.merge_id = None
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def handle_show_find_bar_action_toggled(self, action):
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if action.props.active:
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self.bar.show()
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self.bar.entry.grab_focus()
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self.update_search()
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else:
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try:
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column = self.window.column_manager.find_item(
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name="message")
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del column.highlighters[self]
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except KeyError:
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pass
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self.bar.clear_status()
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self.bar.hide()
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for action_name in ["goto-next-search-result",
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"goto-previous-search-result"]:
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self.action_group.get_action(
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action_name).props.sensitive = False
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def handle_goto_previous_search_result_action_activate(self, action):
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if self.prev_match is None:
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self.logger.warning("inconsistent action sensitivity")
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return
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self.scroll_view_to_line(self.prev_match)
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self.prev_match = None
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start_path = self.log_view.get_visible_range()[0]
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new_position = start_path[0] - 1
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self.start_search_operation(start_position=new_position,
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forward=False)
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# FIXME
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def handle_goto_next_search_result_action_activate(self, action):
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if self.next_match is None:
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self.logger.warning("inconsistent action sensitivity")
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return
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self.scroll_view_to_line(self.next_match)
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self.next_match = None
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end_path = self.log_view.get_visible_range()[1]
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new_position = end_path[0] + 1
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self.start_search_operation(start_position=new_position,
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forward=True)
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# FIXME: Finish.
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# model = self.log_view.get_model ()
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# start_path, end_path = self.log_view.get_visible_range ()
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# start_index, end_index = start_path[0], end_path[0]
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# for line_index in self.matches:
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# if line_index > end_index:
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# break
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# else:
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# return
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# self.scroll_view_to_line (line_index)
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def handle_entry_changed(self, entry):
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self.update_search()
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def update_search(self):
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model = self.log_view.get_model()
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search_text = self.bar.entry.props.text
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column = self.window.column_manager.find_item(name="message")
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if search_text == "":
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self.logger.debug("search string set to '', aborting search")
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self.search_state = None
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self.next_match = None
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self.prev_match = None
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self.update_sensitivity()
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self.sentinel.abort()
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try:
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del column.highlighters[self]
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except KeyError:
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pass
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else:
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self.logger.debug("starting search for %r", search_text)
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self.next_match = None
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self.prev_match = None
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self.update_sensitivity()
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self.scroll_match = True
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start_path = self.log_view.get_visible_range()[0]
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self.start_search_operation(
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search_text, start_position=start_path[0])
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self.bar.status_searching()
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column.highlighters[self] = self.operation.match_func
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self.window.update_view()
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def update_sensitivity(self):
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for name, value in (("goto-next-search-result", self.next_match,),
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("goto-previous-search-result", self.prev_match,),):
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action = self.action_group.get_action(name)
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action.props.sensitive = (value is not None)
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def start_search_operation(self, search_text=None, forward=True, start_position=None):
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model = self.log_view.get_model()
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if forward:
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self.search_state = "search-forward"
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if start_position is None:
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start_position = 0
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else:
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self.search_state = "search-backward"
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if start_position is None:
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start_position = len(model) - 1
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if search_text is None:
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operation = self.operation
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if operation is None:
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raise ValueError(
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"search_text not given but have no previous search operation")
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search_text = operation.search_text
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self.operation = SearchOperation(model, search_text,
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start_position=start_position,
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search_forward=forward)
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self.sentinel.run_for(self.operation)
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def handle_match_found(self, model, tree_iter):
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if not self.search_state in ("search-forward", "search-backward",):
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self.logger.warning(
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"inconsistent search state %r", self.search_state)
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return
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line_index = model.get_path(tree_iter)[0]
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forward_search = (self.search_state == "search-forward")
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if forward_search:
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self.logger.debug("forward search for %r matches line %i",
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self.operation.search_text, line_index)
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else:
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self.logger.debug("backward search for %r matches line %i",
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self.operation.search_text, line_index)
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self.sentinel.abort()
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if self.scroll_match:
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self.logger.debug("scrolling to matching line")
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self.scroll_view_to_line(line_index)
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# Now search for the next one:
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self.scroll_match = False
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# FIXME: Start with first line that is outside of the visible
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# range.
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self.start_search_operation(start_position=line_index + 1,
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forward=forward_search)
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else:
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if forward_search:
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self.next_match = line_index
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self.search_state = "search-backward"
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self.start_search_operation(forward=False,
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start_position=line_index - 1)
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else:
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self.prev_match = line_index
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self.update_sensitivity()
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self.bar.clear_status()
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def handle_search_complete(self):
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if self.search_state == "search-forward":
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self.logger.debug("forward search for %r reached last line",
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self.operation.search_text)
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self.next_match = None
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elif self.search_state == "search-backward":
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self.logger.debug("backward search for %r reached first line",
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self.operation.search_text)
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self.prev_match = None
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else:
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self.logger.warning("inconsistent search state %r",
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self.search_state)
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return
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self.update_sensitivity()
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if self.prev_match is None and self.next_match is None:
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self.bar.status_no_match_found()
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class Plugin (PluginBase):
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features = (FindBarFeature,)
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