Example #1
0
    def testUndoOnDeletedElement(self):
        b1 = Box()

        b2 = Box()
        line = Line()

        canvas = Canvas()
        canvas.add(b1)
        self.assertEquals(6, len(canvas.solver.constraints))

        canvas.add(b2)
        self.assertEquals(12, len(canvas.solver.constraints))

        canvas.add(line)

        sink = ConnectionSink(b1, b1.ports()[0])
        connector = Connector(line, line.handles()[0])
        connector.connect(sink)

        sink = ConnectionSink(b2, b2.ports()[0])
        connector = Connector(line, line.handles()[-1])
        connector.connect(sink)

        self.assertEquals(14, len(canvas.solver.constraints))
        self.assertEquals(2, len(list(canvas.get_connections(item=line))))

        del undo_list[:]

        # Here disconnect is not invoked!
        canvas.remove(b2)

        self.assertEquals(7, len(canvas.solver.constraints))
        self.assertEquals(1, len(list(canvas.get_connections(item=line))))

        cinfo = canvas.get_connection(line.handles()[0])
        self.assertEquals(b1, cinfo.connected)

        cinfo = canvas.get_connection(line.handles()[-1])
        self.assertEquals(None, cinfo)

        self.assertEquals([], list(canvas.solver.constraints_with_variable(line.handles()[-1].pos.x)))
        self.assertEquals([], list(canvas.solver.constraints_with_variable(line.handles()[-1].pos.y)))

        undo()

        self.assertEquals(14, len(canvas.solver.constraints))
        self.assertEquals(2, len(list(canvas.get_connections(item=line))))

        cinfo = canvas.get_connection(line.handles()[0])
        self.assertEquals(b1, cinfo.connected)

        cinfo = canvas.get_connection(line.handles()[-1])
        self.assertEquals(b2, cinfo.connected)
Example #2
0
def test_undo_on_delete_element(revert_undo, undo_fixture):
    b1 = Box()
    b2 = Box()
    line = Line()

    canvas = Canvas()
    canvas.add(b1)
    assert 2 == len(canvas.solver.constraints)

    canvas.add(b2)
    assert 4 == len(canvas.solver.constraints)

    canvas.add(line)

    sink = ConnectionSink(b1, b1.ports()[0])
    connector = Connector(line, line.handles()[0])
    connector.connect(sink)

    sink = ConnectionSink(b2, b2.ports()[0])
    connector = Connector(line, line.handles()[-1])
    connector.connect(sink)

    assert 6 == len(canvas.solver.constraints)
    assert 2 == len(list(canvas.get_connections(item=line)))

    del undo_fixture[2][:]  # Clear undo_list

    # Here disconnect is not invoked!
    canvas.remove(b2)

    assert 3 == len(canvas.solver.constraints)
    assert 1 == len(list(canvas.get_connections(item=line)))

    cinfo = canvas.get_connection(line.handles()[0])
    assert b1 == cinfo.connected

    cinfo = canvas.get_connection(line.handles()[-1])
    assert cinfo is None

    assert [] == list(canvas.solver.constraints_with_variable(line.handles()[-1].pos.x))
    assert [] == list(canvas.solver.constraints_with_variable(line.handles()[-1].pos.y))

    undo_fixture[0]()  # Call undo

    assert 6 == len(canvas.solver.constraints)
    assert 2 == len(list(canvas.get_connections(item=line)))

    cinfo = canvas.get_connection(line.handles()[0])
    assert b1 == cinfo.connected

    cinfo = canvas.get_connection(line.handles()[-1])
    assert b2 == cinfo.connected
Example #3
0
    def test_connect_item(self):
        b1 = Box()
        b2 = Box()
        l = Line()
        c = Canvas()
        c.add(b1)
        c.add(b2)
        c.add(l)

        c.connect_item(l, l.handles()[0], b1, b1.ports()[0])
        assert count(c.get_connections(handle=l.handles()[0])) == 1

        # Add the same
        self.assertRaises(ConnectionError, c.connect_item, l, l.handles()[0], b1, b1.ports()[0])
        assert count(c.get_connections(handle=l.handles()[0])) == 1
Example #4
0
def test_connect_item():
    b1 = Box()
    b2 = Box()
    line = Line()
    c = Canvas()
    c.add(b1)
    c.add(b2)
    c.add(line)

    c.connect_item(line, line.handles()[0], b1, b1.ports()[0])
    assert count(c.get_connections(handle=line.handles()[0])) == 1

    # Add the same
    with pytest.raises(ConnectionError):
        c.connect_item(line, line.handles()[0], b1, b1.ports()[0])
    assert count(c.get_connections(handle=line.handles()[0])) == 1
Example #5
0
    def test_connect_item(self):
        b1 = Box()
        b2 = Box()
        l = Line()
        c = Canvas()
        c.add(b1)
        c.add(b2)
        c.add(l)

        c.connect_item(l, l.handles()[0], b1, b1.ports()[0])
        assert count(c.get_connections(handle=l.handles()[0])) == 1

        # Add the same
        self.assertRaises(ConnectionError, c.connect_item, l,
                          l.handles()[0], b1,
                          b1.ports()[0])
        assert count(c.get_connections(handle=l.handles()[0])) == 1
Example #6
0
    def test_disconnect_item_with_callback(self):
        b1 = Box()
        b2 = Box()
        l = Line()
        c = Canvas()
        c.add(b1)
        c.add(b2)
        c.add(l)

        events = []
        def callback():
            events.append('called')

        c.connect_item(l, l.handles()[0], b1, b1.ports()[0], callback=callback)
        assert count(c.get_connections(handle=l.handles()[0])) == 1

        c.disconnect_item(l, l.handles()[0])
        assert count(c.get_connections(handle=l.handles()[0])) == 0
        assert events == ['called']
Example #7
0
def test_disconnect_item_with_callback():
    b1 = Box()
    b2 = Box()
    line = Line()
    c = Canvas()
    c.add(b1)
    c.add(b2)
    c.add(line)

    events = []

    def callback():
        events.append("called")

    c.connect_item(line, line.handles()[0], b1, b1.ports()[0], callback=callback)
    assert count(c.get_connections(handle=line.handles()[0])) == 1

    c.disconnect_item(line, line.handles()[0])
    assert count(c.get_connections(handle=line.handles()[0])) == 0
    assert events == ["called"]
Example #8
0
    def test_disconnect_item_with_constraint(self):
        b1 = Box()
        b2 = Box()
        l = Line()
        c = Canvas()
        c.add(b1)
        c.add(b2)
        c.add(l)

        cons = b1.ports()[0].constraint(c, l, l.handles()[0], b1)

        c.connect_item(l, l.handles()[0], b1, b1.ports()[0], constraint=cons)
        assert count(c.get_connections(handle=l.handles()[0])) == 1

        ncons = len(c.solver.constraints)
        assert ncons == 5

        c.disconnect_item(l, l.handles()[0])
        assert count(c.get_connections(handle=l.handles()[0])) == 0

        assert len(c.solver.constraints) == 4
Example #9
0
    def test_disconnect_item_with_constraint_by_deleting_element(self):
        b1 = Box()
        b2 = Box()
        l = Line()
        c = Canvas()
        c.add(b1)
        c.add(b2)
        c.add(l)

        cons = b1.ports()[0].constraint(c, l, l.handles()[0], b1)

        c.connect_item(l, l.handles()[0], b1, b1.ports()[0], constraint=cons)
        assert count(c.get_connections(handle=l.handles()[0])) == 1

        ncons = len(c.solver.constraints)
        assert ncons == 5

        c.remove(b1)

        assert count(c.get_connections(handle=l.handles()[0])) == 0

        self.assertEquals(2, len(c.solver.constraints))
Example #10
0
    def test_disconnect_item_with_constraint_by_deleting_element(self):
        b1 = Box()
        b2 = Box()
        l = Line()
        c = Canvas()
        c.add(b1)
        c.add(b2)
        c.add(l)

        cons = b1.ports()[0].constraint(c, l, l.handles()[0], b1)

        c.connect_item(l, l.handles()[0], b1, b1.ports()[0], constraint=cons)
        assert count(c.get_connections(handle=l.handles()[0])) == 1

        ncons = len(c.solver.constraints)
        assert ncons == 5

        c.remove(b1)

        assert count(c.get_connections(handle=l.handles()[0])) == 0

        self.assertEquals(2, len(c.solver.constraints))
Example #11
0
def test_disconnect_item_with_constraint_by_deleting_element():
    b1 = Box()
    b2 = Box()
    line = Line()
    c = Canvas()
    c.add(b1)
    c.add(b2)
    c.add(line)

    cons = b1.ports()[0].constraint(c, line, line.handles()[0], b1)

    c.connect_item(line, line.handles()[0], b1, b1.ports()[0], constraint=cons)
    assert count(c.get_connections(handle=line.handles()[0])) == 1

    ncons = len(c.solver.constraints)
    assert ncons == 5

    c.remove(b1)

    assert count(c.get_connections(handle=line.handles()[0])) == 0

    assert 2 == len(c.solver.constraints)