laydi/workflows/gobrowser.py

import gtk
from fluents import dataset, logger, plots, workflow, fluents, project
import geneontology
from scipy import array, randn, log, ones, zeros
import networkx
import re

EVIDENCE_CODES=[('IMP', 'Inferred from mutant phenotype'),
                ('IGI', 'Inferred from genetic interaction'),
                ('IPI', 'Inferred from physical interaction'),
                ('ISS', 'Inferred from sequence or structure similarity'),
                ('IDA', 'Inferred from direct assay'),
                ('IEP', 'Inferred on expression pattern'),
                ('IEA', 'Inferred from electronic annotation'),
                ('TAS', 'Traceable author statement'),
                ('NAS', 'Non-traceable author statement'),
                ('ND', 'No biological data available'),
                ('RCA', 'Inferred from reviewed computational analysis'),
                ('IC', 'Inferred by curator')]
            
DISTANCE_METRICS = [('resnik', 'Resnik'), 
                    ('jiang', 'Jiang & Conrath'),
                    ('fussimeg', 'FuSSiMeG')]

GO_DATA_DIR = '/home/einarr/data'

evidence = None
go = None

class GoTermView (gtk.Frame):

    def __init__(self):
        gtk.Frame.__init__(self)
        tab = gtk.Table(2, 2, False)
        self._table = tab
        
        self._name = gtk.Label('')
        self._name.set_line_wrap(True)
        self._name.set_alignment(0, 0)
        name_label = gtk.Label('Name:')
        name_label.set_alignment(0, 0)
        tab.attach(name_label, 0, 1, 0, 1, gtk.FILL, gtk.FILL, 5, 5)
        tab.attach(self._name, 1, 2, 0, 1, gtk.FILL|gtk.EXPAND, gtk.FILL, 5, 5)
        
        self._def = gtk.TextBuffer()
        textview = gtk.TextView(self._def)
        textview.set_wrap_mode(gtk.WRAP_WORD)
        scrolled_window = gtk.ScrolledWindow()
        scrolled_window.add(textview)
        def_label = gtk.Label('Def:')
        def_label.set_alignment(0.0, 0.0)
        tab.attach(def_label, 0, 1, 1, 2, gtk.FILL, gtk.FILL, 5, 5)
        tab.attach(scrolled_window, 1, 2, 1, 2, gtk.FILL|gtk.EXPAND, gtk.FILL|gtk.EXPAND, 5, 5)
        
        self.add(tab)
        self.set_go_term(None)

    def set_go_term(self, term):
        if term:
            self.set_label(term['id'])
            self._name.set_text(term['name'])
            self._def.set_text(term['def'])
        else:
            self.set_label('GO Term')
            self._name.set_text('')
            self._def.set_text('')

        
class GeneOntologyTree (gtk.HPaned):
    
    def __init__(self, network):
        gtk.HPaned.__init__(self)
    
        treemodel = geneontology.get_go_treestore(network)
        self._treemodel = treemodel
        self._tree_view = gtk.TreeView(treemodel)

        self._selected_terms = set()

        self._tree_view.set_fixed_height_mode(True)

        # Set up context menu
        self._context_menu = GoTermContextMenu(treemodel, self._tree_view)
        self._tree_view.connect('popup_menu', self._popup_menu)
        self._tree_view.connect('button_press_event', self._on_button_press)

        renderer = gtk.CellRendererText()
        go_column = gtk.TreeViewColumn('GO ID', renderer, text=0)
        go_column.set_sizing(gtk.TREE_VIEW_COLUMN_FIXED)
        go_column.set_fixed_width(200)
        go_column.set_resizable(True)
        self._tree_view.insert_column(go_column, 0)

        renderer = gtk.CellRendererToggle()
        renderer.set_property('activatable', True)
        renderer.connect('toggled', self._toggle_selected)
        renderer.set_active(True)
        renderer.set_property('mode', gtk.CELL_RENDERER_MODE_ACTIVATABLE)
        go_column = gtk.TreeViewColumn('T', renderer, active=2)
        go_column.set_fixed_width(20)
        go_column.set_sizing(gtk.TREE_VIEW_COLUMN_FIXED)
        go_column.set_resizable(True)
        self._tree_view.insert_column(go_column, 1)

        renderer = gtk.CellRendererText()
        go_column = gtk.TreeViewColumn('Name', renderer, text=1)
        go_column.set_fixed_width(200)
        go_column.set_sizing(gtk.TREE_VIEW_COLUMN_FIXED)
        go_column.set_resizable(True)
        self._tree_view.insert_column(go_column, 2)

        self._desc_view = GoTermView()

        self._tree_view.connect('cursor-changed', self._on_cursor_changed)

        scrolled_window = gtk.ScrolledWindow()
        scrolled_window.add(self._tree_view)
        self.add1(scrolled_window)
        self.add2(self._desc_view)
        self.show_all()

    def _on_cursor_changed(self, tree):
        path, col = self._tree_view.get_cursor()
        current = self._treemodel.get_iter(path)
        term = self._treemodel.get_value(current, 3)
        self._desc_view.set_go_term(term)        
        

    ##
    ## GTK Callback functions
    ##
    def _popup_menu(self, *rest):
        self.menu.popup(None, None, None, 0, 0)

    def _on_button_press(self, widget, event):
        path = widget.get_path_at_pos(int(event.x), int(event.y))
        iter = None

        if path:
            iter = self._treemodel.get_iter(path[0])
            obj = self._treemodel.get_value(iter, 3)
        else:
            obj = None

        self._context_menu.set_current_term(obj, iter)

        if event.button == 3:
            self._context_menu.popup(None, None, None, event.button, event.time)

    def _toggle_selected(self, renderer, path):
        iter = self._treemodel.get_iter(path)
        
        selected = self._treemodel.get_value(iter, 2)
        id = self._treemodel.get_value(iter, 0)

        self._treemodel.set_value(iter, 2, not selected)

        if selected:
            self._selected_terms.remove(id)
        else:
            self._selected_terms.add(id)


class GoTermContextMenu (gtk.Menu):
    """Context menu for GO terms in the gene ontology browser"""

    def __init__(self, treemodel, treeview):
        self._treemodel = treemodel
        self._treeview = treeview
        self._current_term = None
        self._current_iter = None

        gtk.Menu.__init__(self)

        # Popuplate tree
        self._expand_item = i = gtk.MenuItem('Expand')
        i.connect('activate', self._on_expand_subtree, treemodel, treeview)
        self.append(i)
        i.show()

        self._collapse_item = i = gtk.MenuItem('Collapse')
        i.connect('activate', self._on_collapse_subtree, treemodel, treeview)
        self.append(i)
        i.show()

        self._select_subtree_item = i = gtk.MenuItem('Select subtree')
        i.connect('activate', self._on_select_subtree, treemodel, treeview)
        self.append(i)
        i.show()

    def set_current_term(self, term, it):
        self._current_term = term
        self._current_iter = it

    def _on_expand_subtree(self, item, treemodel, treeview):
        path = treemodel.get_path(self._current_iter)
        treeview.expand_row(path, True)

    def _on_collapse_subtree(self, item, treemodel, treeview):
        treeview.collapse_row(treemodel.get_path(self._current_iter))

    def _on_select_subtree(self, item, treemodel, treeview):
        logger.log('notice', 'Selecting subtree from GO id: %s (%s)' %
                   (self._current_term['id'], self._current_term['name']))
        ids = [x['id'] for x in networkx.bfs(go, self._current_term)]
        project.project.set_selection('go-terms', set(ids))


class LoadGOFunction(workflow.Function): 
    def __init__(self):
        workflow.Function.__init__(self, 'load-go', 'Load Gene Ontology')

    def run(self):
        global go
        if go:
            return

        go = geneontology.read_default_go()
        browser = GeneOntologyTree(go)
        label = gtk.Label('_Gene Ontology')
        label.set_use_underline(True)
        fluents.app['bottom_notebook'].append_page(browser, label)

class LoadAnnotationsFunction(workflow.Function):

    def __init__(self):
        workflow.Function.__init__(self, 'load-go-ann', 'Load Annotations')
        self.annotations = None
    
    def run(self):
        global evidence
        f = open(GO_DATA_DIR + '/goa-condensed')
        ev_codes = f.readline().split()
        go_terms = []
    
        lines = f.readlines()
        m = zeros((len(lines), len(ev_codes)))

        for i, l in enumerate(lines):
            values = l.split()
            go_terms.append(values[0])
            for j, v in enumerate(values[1:]):
                m[i,j] = float(v.strip())
        
        d = dataset.Dataset(m, 
                            [['go-terms', go_terms], ['evidence', ev_codes]],
                            name='GO evidence')

        evidence = d
        return [d]
            

class GOWeightDialog(gtk.Dialog):
    def __init__(self):
        gtk.Dialog.__init__(self, 'GO Gene List Influence',
                            None,
                            gtk.DIALOG_MODAL | gtk.DIALOG_DESTROY_WITH_PARENT,
                            (gtk.STOCK_OK, gtk.RESPONSE_OK,
                             gtk.STOCK_CANCEL, gtk.RESPONSE_CANCEL))

        table = gtk.Table(2, 2)
        
        sim_lbl = gtk.Label('Similarity threshold: ')
        table.attach(sim_lbl, 0, 1, 0, 1)
        adjustment = gtk.Adjustment(0, 0, 10, 0.1, 1.0, 1.0)
        sim_spin = gtk.SpinButton(adjustment, 0.0, 2)
        table.attach(sim_spin, 1, 2, 0, 1)

        rank_lbl = gtk.Label('Rank threshold: ')
        table.attach(rank_lbl, 0, 1, 1, 2)
        rank_adj = gtk.Adjustment(0, 0, 10, 0.1, 1.0, 1.0)
        rank_spin = gtk.SpinButton(rank_adj, 0.0, 2)
        table.attach(rank_spin, 1, 2, 1, 2)
        
        sim_lbl.show()
        sim_spin.show()
        rank_lbl.show()
        rank_spin.show()
        
        table.show()
        self.vbox.add(table)
        self._sim_spin = sim_spin
        self._rank_spin = rank_spin

    def set_options(self, options):
        self._sim_spin.set_value(options['similarity_threshold'])
        self._rank_spin.set_value(options['rank_threshold'])

    def set_editable(self, editable):
        self._sim_spin.set_sensitive(editable)
        self._rank_spin.set_sensitive(editable)

    def update_options(self, options):
        options['similarity_threshold'] = self._sim_spin.get_value()
        options['rank_threshold'] = self._rank_spin.get_value()
        

class GOWeightFunction(workflow.Function):
    def __init__(self):
        workflow.Function.__init__(self, 'load-go-ann', 'GO Influence')
        self.options = GOWeightOptions()
    
    def run(self, genelist, similarity):
        ## Show dialog box
        self.show_gui(self.options)

        ## assure that data is "correct", i.e., that we can perform
        ## the desired operations.
        common_dims = genelist.common_dims(similarity)
        if len(common_dims) == 0:
            logger.log('error', 'No common dimension in the selected datasets.')
        elif len(common_dims) > 1:
            logger.log('error', "More than one common dimension in the " +
                       "selected datasets. Don't know what to do.")
        gene_dim = common_dims[0]
        logger.log('debug', 'Assuming genes are in dimension: %s' % gene_dim)

        ## Do the calculations.
        d = {}
        
        
    def show_gui(self, options, edit=True):
        dialog = GOWeightDialog()
        dialog.set_options(self.options)
        dialog.show_all()
        dialog.set_editable(edit)
        response = dialog.run()
        dialog.hide()
        if response == gtk.RESPONSE_OK:
            return dialog.update_options(self.options)
        else:
            return options


class Options(dict):
    def __init__(self):
        dict.__init__(self)


class GOWeightOptions(Options):
    def __init__(self):
        Options.__init__(self)
        self['similarity_threshold'] = 0.0
        self['rank_threshold'] = 0.0