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472 lines
16 KiB
Python
472 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 *
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import pango
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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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# TODO: Return all match ranges here.
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pos = message.find (search_text)
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return ((pos, pos + len_search_text,),)
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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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gtk.HBox.__init__ (self)
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label = gtk.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)
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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_action.connect_proxy (prev_button)
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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_action.connect_proxy (next_button)
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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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attrs = pango.AttrList ()
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attrs.insert (pango.AttrWeight (pango.WEIGHT_BOLD, 0, -1))
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self.status_label.props.attributes = attrs
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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_text = 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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width, height = label.size_request ()
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max_width = max (max_width, 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_text
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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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self.status_label.props.label = text
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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 = (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 ("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", "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.UI_MANAGER_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 (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 (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.props.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.props.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 (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.props.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 ("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 ("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 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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