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