470 lines
15 KiB
Python
470 lines
15 KiB
Python
#
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# Gramps - a GTK+/GNOME based genealogy program
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#
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# Copyright (C) 2000 Donald N. Allingham
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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#
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"""
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Provide the basic functionality for a list view
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"""
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#-------------------------------------------------------------------------
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#
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# GTK
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#
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#-------------------------------------------------------------------------
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import gtk
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import pango
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import const
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#-------------------------------------------------------------------------
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#
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# constants
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#
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#-------------------------------------------------------------------------
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TEXT = 0
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TOGGLE = 1
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COMBO = 2
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IMAGE = 3
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INTEGER = 4
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COLOR = 5
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NOSORT = -1
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#-------------------------------------------------------------------------
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#
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# ListModel
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#
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#-------------------------------------------------------------------------
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class ListModel(object):
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"""
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Simple model for lists in smaller dialogs (not views).
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tree: A Gtk TreeView object.
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dlist: A list of column definitions. Each column definition is a tuple
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consisting of the following elements:
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(name, sort_id, width, type, editable, callback)
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name: The column name. If the name is an empty string then the
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column is hidden. Use a single space for the column to be
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displayed but have no heading.
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sort_id: The column id to used to sort the column. Use the NOSORT
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constant to disable sorting on the column.
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width: The column width.
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type: An optional column type. One of the constants TEXT, TOGGLE,
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COMBO, IMAGE, INTEGER or COLOR. Default = TEXT.
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editable: An optional boolean. True if the column is editable.
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Used with TEXT, INTEGER, COMBO and TOGGLE columns.
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Default = False.
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callback: An optional callback to be executed when the column is
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edited. Used with TEXT, INTEGER, COMBO and TOGGLE columns.
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Default = None.
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select_func: Function called when the TreeView selection changes.
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event_func: Function called when the user double-clicks on a row.
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mode: Selection mode for TreeView. See Gtk documentation.
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"""
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def __init__(self, tree, dlist, select_func=None, event_func=None,
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mode=gtk.SELECTION_SINGLE):
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self.tree = tree
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self.tree.set_fixed_height_mode(True)
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self.mylist = []
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self.data_index = 0
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self.sel_iter = None
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for info in dlist:
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if len(info) > 3:
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if info[3] == TOGGLE:
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self.mylist.append(bool)
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elif info[3] == IMAGE:
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self.mylist.append(gtk.gdk.Pixbuf)
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elif info[3] == INTEGER:
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self.mylist.append(int)
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elif info[3] == COLOR:
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self.mylist.append(str)
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else:
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self.mylist.append(str)
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self.data_index += 1
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self.mylist.append(object)
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self.function = {}
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self.tree.set_rules_hint(True)
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self.model = None
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self.selection = None
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self.mode = mode
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self.new_model()
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self.count = 0
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self.cid = None
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self.cids = []
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self.idmap = {}
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self.__build_columns(dlist)
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self.connect_model()
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if select_func:
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self.selection.connect('changed', select_func)
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if event_func:
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self.double_click = event_func
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self.tree.connect('event', self.__button_press)
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def __build_image_column(self, cnum, name, renderer, column):
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renderer = gtk.CellRendererPixbuf()
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column = gtk.TreeViewColumn(name[0], renderer)
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column.add_attribute(renderer, 'pixbuf', cnum)
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renderer.set_property('height', const.THUMBSCALE / 2)
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return renderer, column
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def __build_columns(self, dlist):
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"""
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Builds the columns based of the data in dlist
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"""
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cnum = 0
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for name in [item for item in dlist if item[2]]:
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if len(name) == 3:
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name = (name[0], name[1], name[2], TEXT, False, None)
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elif len(name) == 4:
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name = (name[0], name[1], name[2], name[3], False, None)
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elif len(name) == 5:
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name = (name[0], name[1], name[2], name[3], name[4], None)
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if name[0] and name[3] == TOGGLE:
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renderer = gtk.CellRendererToggle()
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column = gtk.TreeViewColumn(name[0], renderer)
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column.add_attribute(renderer, 'active', cnum)
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if name[4]:
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renderer.set_property('activatable', True)
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renderer.connect('toggled', self.__toggled_cb, cnum)
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if name[5]:
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self.function[cnum] = name[5]
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else:
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renderer.set_property('activatable', False)
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elif name[0] and name[3] == IMAGE:
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renderer, column = self.__build_image_column(cnum, name, renderer, column)
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elif name[0] and name[3] == COLOR:
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renderer = gtk.CellRendererText()
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column = gtk.TreeViewColumn(name[0], renderer, background=cnum)
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else:
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renderer = gtk.CellRendererText()
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renderer.set_fixed_height_from_font(True)
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renderer.set_property('ellipsize', pango.ELLIPSIZE_END)
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if name[4]:
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renderer.set_property('editable', True)
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renderer.connect('edited', self.__edited_cb, cnum)
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if name[5]:
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self.function[cnum] = name[5]
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else:
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renderer.set_property('editable', False)
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column = gtk.TreeViewColumn(name[0], renderer, text=cnum)
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column.set_reorderable(True)
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column.set_min_width(name[2])
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if name[0] == '':
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column.set_visible(False)
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else:
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column.set_resizable(True)
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if name[1] == -1:
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column.set_clickable(False)
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else:
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column.set_clickable(True)
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#column.set_sort_column_id(name[1])
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column.set_sort_column_id(cnum)
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column.set_sizing(gtk.TREE_VIEW_COLUMN_FIXED)
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column.set_fixed_width(name[2])
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cnum += 1
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self.cids.append(name[1])
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if name[0] != '':
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self.tree.append_column(column)
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def __toggled_cb(self, obj, path, col):
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"""
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Callback executed when the checkbox of the cell renderer is clicked
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"""
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new_value = not self.model[path][col]
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self.model[path][col] = new_value
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if col in self.function:
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self.function[col](int(path), new_value)
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def __edited_cb(self, cell, path, new_text, col):
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"""
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Callback executed when the text of the cell renderer has changed
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"""
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self.model[path][col] = new_text
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if col in self.function:
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self.function[col](int(path), new_text)
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def unselect(self):
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"""
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Remove the selection from the view
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"""
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self.selection.unselect_all()
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def set_reorderable(self, order):
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"""
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Enables or disables reordering of data
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"""
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self.tree.set_reorderable(order)
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def new_model(self):
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"""
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Create a new model instance
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"""
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if self.model:
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self.cid = self.model.get_sort_column_id()
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del self.model
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del self.selection
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self.count = 0
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self.model = gtk.ListStore(*self.mylist)
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self.selection = self.tree.get_selection()
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self.selection.set_mode(self.mode)
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self.sel_iter = None
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def connect_model(self):
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"""
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Connects the model to the associated tree
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"""
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self.tree.set_model(self.model)
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if self.sel_iter:
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self.selection.select_iter(self.sel_iter)
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# if the sort column has not been defined (val[0] == -2), set
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# the sort column to the first column
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val = self.model.get_sort_column_id()
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if val[0] == -2 and self.cid:
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self.model.set_sort_column_id(self.cid[0], self.cid[1])
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self.sort()
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def sort(self):
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"""
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Sorts the current view
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"""
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val = self.model.get_sort_column_id()
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col = val[0]
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if col < 0:
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return
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if col > 0:
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self.model.set_sort_column_id(col, val[1])
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else:
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self.model.set_sort_column_id(self.cids[0], val[1])
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self.model.sort_column_changed()
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def get_selected(self):
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"""
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Return the selected items
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"""
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return self.selection.get_selected()
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def get_row_at(self, xpos, ypos):
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"""
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Return the row at the specified (x,y) coordinates
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"""
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path = self.tree.get_path_at_pos(xpos, ypos)
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if path is None:
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return self.count -1
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else:
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return path[0][0]-1
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def get_selected_row(self):
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"""
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Get the selected row number
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"""
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store, node = self.selection.get_selected()
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if node:
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rows = store.get_path(node)
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return rows[0]
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else:
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return -1
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def get_selected_objects(self):
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"""
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Return the list of selected objects in the list
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"""
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if self.count == 0:
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return []
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elif self.mode == gtk.SELECTION_SINGLE:
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store, node = self.selection.get_selected()
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if node:
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return [self.model.get_value(node, self.data_index)]
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else:
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return []
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else:
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mlist = []
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self.selection.selected_foreach(self.__build_select_list, mlist)
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return mlist
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def get_icon(self):
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"""
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Return an icon to be used for Drag and drop.
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"""
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if self.mode == gtk.SELECTION_SINGLE:
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store, node = self.selection.get_selected()
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path = self.model.get_path(node)
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else:
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mlist = []
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self.selection.selected_foreach(self.__build_select_list, mlist)
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path = self.model.get_path(mlist[0])
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return self.tree.create_row_drag_icon(path)
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def __build_select_list(self, store, path, node, dlist):
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"""
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GTK callback function for walking a select list
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"""
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dlist.append(self.model.get_value(node, self.data_index))
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def clear(self):
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"""
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Clears all data in the list
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"""
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self.count = 0
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self.model.clear()
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def remove(self, node):
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"""
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Remove the item from the model
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"""
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self.model.remove(node)
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self.count -= 1
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def get_row(self, node):
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"""
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Return the row associated with the selected node
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"""
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row = self.model.get_path(node)
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return row[0]
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def select_row(self, row):
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"""
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Selects the item based on path
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"""
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self.selection.select_path(row)
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def select_iter(self, node):
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"""
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Selects the item based on iter
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"""
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self.selection.select_iter(node)
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def get_object(self, node):
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"""
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Return the object associated with the node. This is controlled
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by extracting the data from the associated data index
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"""
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return self.model.get_value(node, self.data_index)
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def insert(self, position, data, info=None, select=0):
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"""
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Inserts the item at the specified position in the model.
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"""
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self.count += 1
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node = self.model.insert(position)
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col = 0
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for obj in data:
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self.model.set_value(node, col, obj)
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col += 1
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self.model.set_value(node, col, info)
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if info:
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self.idmap[str(info)] = node
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if select:
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self.selection.select_iter(node)
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return node
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def get_data(self, node, cols):
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"""
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Return a list of data from the model associated with the node
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"""
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return [ self.model.get_value(node, c) for c in cols ]
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def add(self, data, info=None, select=0):
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"""
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Add the data to the model at the end of the model
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"""
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self.count += 1
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node = self.model.append()
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col = 0
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for obj in data:
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self.model.set_value(node, col, obj)
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col += 1
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self.model.set_value(node, col, info)
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if info is not None:
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self.idmap[str(info)] = node
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if select:
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self.sel_iter = node
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self.selection.select_iter(self.sel_iter)
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return node
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def set(self, node, data, info=None, select=0):
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"""
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Change the data associated with the specific node. It does not
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add any data, just alters an existing row.
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"""
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col = 0
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for obj in data:
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self.model.set_value(node, col, obj)
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col += 1
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self.model.set_value(node, col, info)
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if info:
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self.idmap[str(info)] = node
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if select:
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self.sel_iter = node
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return node
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def __button_press(self, obj, event):
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"""
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Called when a button press is executed
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"""
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if event.type == gtk.gdk._2BUTTON_PRESS and event.button == 1:
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self.double_click(obj)
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return True
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return False
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def find(self, info):
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"""
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Selects the item associated with the pass information.
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"""
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if info in self.idmap:
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node = self.idmap[str(info)]
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self.selection.select_iter(node)
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def move_up(self, row):
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"""
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Move the given row up one position.
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"""
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if row < 1 or row == -1:
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return False
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this_row = self.model.get_iter((row, ))
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prev_row = self.model.get_iter((row - 1, ))
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self.model.move_before(this_row, prev_row)
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return True
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def move_down(self, row):
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"""
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Move the given row down one position.
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"""
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if row >= self.count - 1 or row == -1:
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return False
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this_row = self.model.get_iter((row, ))
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next_row = self.model.get_iter((row + 1, ))
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self.model.move_after(this_row, next_row)
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return True
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