#! /usr/bin/python

import gobject
import gtk

import bitbake_rb_parser
from models import *

class PackageDepView(gtk.TreeView):
    def __init__(self, model, dep_type, label):
        gtk.TreeView.__init__(self)
        self.current = None
        self.dep_type = dep_type
        self.filter_model = model.filter_new()
        self.filter_model.set_visible_func(self._filter)
        self.set_model(self.filter_model)
        #self.connect("row-activated", self.on_package_activated, COL_DEP_PACKAGE)
        self.append_column(gtk.TreeViewColumn(label, gtk.CellRendererText(), text=COL_DEP_PACKAGE))

    def _filter(self, model, iter):
        (this_type, package) = model.get(iter, COL_DEP_TYPE, COL_DEP_PARENT)
        if this_type != self.dep_type: return False
        return package == self.current

    def set_current_package(self, package):
        self.current = package
        self.filter_model.refilter()

class PackageReverseDepView(gtk.TreeView):
    def __init__(self, model, label):
        gtk.TreeView.__init__(self)
        self.current = None
        self.filter_model = model.filter_new()
        self.filter_model.set_visible_func(self._filter)
        self.set_model(self.filter_model)
        self.append_column(gtk.TreeViewColumn(label, gtk.CellRendererText(), text=COL_DEP_PARENT))

    def _filter(self, model, iter):
        package = model.get_value(iter, COL_DEP_PACKAGE)
        return package == self.current

    def set_current_package(self, package):
        self.current = package
        self.filter_model.refilter()


class DepExplorer(gtk.Window):
    def __init__(self):
        gtk.Window.__init__(self)
        self.set_title("Dependency Explorer")
        self.set_default_size(500, 500)
        self.connect("delete-event", gtk.main_quit)

        # Create the data models
        self.pkg_model = gtk.ListStore(gobject.TYPE_STRING)
        self.depends_model = gtk.ListStore(gobject.TYPE_INT, gobject.TYPE_STRING, gobject.TYPE_STRING)

        pane = gtk.HPaned()
        pane.set_position(250)
        self.add(pane)

        # The master list of packages
        scrolled = gtk.ScrolledWindow()
        scrolled.set_policy(gtk.POLICY_AUTOMATIC, gtk.POLICY_AUTOMATIC)
        scrolled.set_shadow_type(gtk.SHADOW_IN)
        self.pkg_treeview = gtk.TreeView(self.pkg_model)
        self.pkg_treeview.get_selection().connect("changed", self.on_cursor_changed)
        self.pkg_treeview.append_column(gtk.TreeViewColumn("Package", gtk.CellRendererText(), text=COL_PKG_NAME))
        pane.add1(scrolled)
        scrolled.add(self.pkg_treeview)

        box = gtk.VBox(homogeneous=True, spacing=4)

        # Runtime Depends
        scrolled = gtk.ScrolledWindow()
        scrolled.set_policy(gtk.POLICY_AUTOMATIC, gtk.POLICY_AUTOMATIC)
        scrolled.set_shadow_type(gtk.SHADOW_IN)
        self.rdep_treeview = PackageDepView(self.depends_model, TYPE_RDEP, "Runtime Depends")
        self.rdep_treeview.connect("row-activated", self.on_package_activated, COL_DEP_PACKAGE)
        scrolled.add(self.rdep_treeview)
        box.add(scrolled)

        # Build Depends
        scrolled = gtk.ScrolledWindow()
        scrolled.set_policy(gtk.POLICY_AUTOMATIC, gtk.POLICY_AUTOMATIC)
        scrolled.set_shadow_type(gtk.SHADOW_IN)
        self.dep_treeview = PackageDepView(self.depends_model, TYPE_DEP, "Build Depends")
        self.dep_treeview.connect("row-activated", self.on_package_activated, COL_DEP_PACKAGE)
        scrolled.add(self.dep_treeview)
        box.add(scrolled)
        pane.add2(box)

        # Reverse Depends
        scrolled = gtk.ScrolledWindow()
        scrolled.set_policy(gtk.POLICY_AUTOMATIC, gtk.POLICY_AUTOMATIC)
        scrolled.set_shadow_type(gtk.SHADOW_IN)
        self.revdep_treeview = PackageReverseDepView(self.depends_model, "Reverse Depends")
        self.revdep_treeview.connect("row-activated", self.on_package_activated, COL_DEP_PARENT)
        scrolled.add(self.revdep_treeview)
        box.add(scrolled)
        pane.add2(box)

        self.show_all()

    def on_package_activated(self, treeview, path, column, data_col):
        model = treeview.get_model()
        package = model.get_value(model.get_iter(path), data_col)

        pkg_path = []
        def finder(model, path, iter, needle):
            package = model.get_value(iter, COL_PKG_NAME)
            if package == needle:
                pkg_path.append(path)
                return True
            else:
                return False
        self.pkg_model.foreach(finder, package)
        if pkg_path:
            self.pkg_treeview.get_selection().select_path(pkg_path[0])
            self.pkg_treeview.scroll_to_cell(pkg_path[0])

    def on_cursor_changed(self, selection):
        (model, it) = selection.get_selected()
        if iter is None:
            current_package = None
        else:
            current_package = model.get_value(it, COL_PKG_NAME)
        self.rdep_treeview.set_current_package(current_package)
        self.dep_treeview.set_current_package(current_package)
        self.revdep_treeview.set_current_package(current_package)


if __name__ == "__main__":
    dep = DepExplorer()
    bitbake_rb_parser.parse("alldepends.rb", dep.pkg_model, dep.depends_model)
    gtk.main()