public void CommandBindByNameWireup()
{
var vm = new WinformCommandBindViewModel();
var view = new WinformCommandBindView {
ViewModel = vm
};
var fixture = new CommandBinderImplementation();
var invokeCount = 0;
vm.Command1.Subscribe(_ => invokeCount += 1);
var disp = fixture.BindCommand(vm, view, x => x.Command1, x => x.Command1);
view.Command1.PerformClick();
Assert.Equal(1, invokeCount);
var newCmd = ReactiveCommand.Create(() => { });
vm.Command1 = newCmd;
view.Command1.PerformClick();
Assert.Equal(1, invokeCount);
disp.Dispose();
}
public void CommandBindToExplicitEventWireup()
{
var vm = new CommandBindViewModel();
var view = new CommandBindView()
{
ViewModel = vm
};
var fixture = new CommandBinderImplementation();
int invokeCount = 0;
vm.Command2.Subscribe(_ => invokeCount += 1);
var disp = fixture.BindCommand(vm, view, x => x.Command2, x => x.Command2, "MouseUp");
view.Command2.RaiseEvent(new MouseButtonEventArgs(Mouse.PrimaryDevice, 0, MouseButton.Left)
{
RoutedEvent = Image.MouseUpEvent
});
disp.Dispose();
view.Command2.RaiseEvent(new MouseButtonEventArgs(Mouse.PrimaryDevice, 0, MouseButton.Left)
{
RoutedEvent = Image.MouseUpEvent
});
Assert.Equal(1, invokeCount);
}
public void CommandBindRaisesCanExecuteChangedOnBind()
{
var vm = new CommandBindViewModel();
var view = new CommandBindView()
{
ViewModel = vm
};
var fixture = new CommandBinderImplementation();
var canExecute1 = new BehaviorSubject <bool>(true);
var cmd1 = new ReactiveCommand(canExecute1);
vm.Command1 = cmd1;
var disp = fixture.BindCommand(vm, view, x => x.Command1, x => x.Command1);
Assert.True(view.Command1.IsEnabled);
// Now change to a disabled cmd
var canExecute2 = new BehaviorSubject <bool>(false);
var cmd2 = new ReactiveCommand(canExecute2);
vm.Command1 = cmd2;
Assert.False(view.Command1.IsEnabled);
}
public void CommandBindToExplicitEventWireupWithParameter()
{
var vm = new WinformCommandBindViewModel();
var view = new WinformCommandBindView {
ViewModel = vm
};
var fixture = new CommandBinderImplementation();
var invokeCount = 0;
vm.Command3.Subscribe(_ => ++ invokeCount);
var disp = CommandBinderImplementationMixins.BindCommand(fixture, vm, view, x => x.Command3, x => x.Command2, vm => vm.Parameter, "MouseUp");
view.Command2.RaiseMouseUpEvent(new MouseEventArgs(MouseButtons.Left, 1, 0, 0, 0));
Assert.Equal(10, vm.ParameterResult);
Assert.Equal(1, invokeCount);
vm.Parameter = 2;
view.Command2.RaiseMouseUpEvent(new MouseEventArgs(MouseButtons.Left, 1, 0, 0, 0));
Assert.Equal(20, vm.ParameterResult);
Assert.Equal(2, invokeCount);
disp.Dispose();
view.Command2.RaiseMouseUpEvent(new MouseEventArgs(MouseButtons.Left, 1, 0, 0, 0));
Assert.Equal(2, invokeCount);
}
public void CommandBindViewModelToViewWithFunc()
{
var vm = new CommandBindingViewModel();
var view = new CommandBindingView {
ViewModel = vm
};
// Create a paramenter feed
vm.Command2.Subscribe(_ =>
{
vm.Value++;
});
view.BindCommand(vm, x => x.Command2, x => x.Command2, "MouseUp");
// Bind the command and the Func<T> parameter.
var fixture = new CommandBinderImplementation().BindCommand(vm, view, vm => vm.Command1, v => v.Command3, vm => vm.Value, "MouseUp");
Assert.Equal(0, vm.Value);
// Confirm that the values update as expected.
var parameter = 0;
vm.Command1.Subscribe(i => parameter = i);
view.Command2.RaiseEvent(new MouseButtonEventArgs(Mouse.PrimaryDevice, 0, MouseButton.Left)
{
RoutedEvent = UIElement.MouseUpEvent
});
Assert.Equal(1, vm.Value);
Assert.Equal(0, parameter);
view.Command3.RaiseEvent(new MouseButtonEventArgs(Mouse.PrimaryDevice, 0, MouseButton.Left)
{
RoutedEvent = UIElement.MouseUpEvent
});
Assert.Equal(1, parameter);
view.Command2.RaiseEvent(new MouseButtonEventArgs(Mouse.PrimaryDevice, 0, MouseButton.Left)
{
RoutedEvent = UIElement.MouseUpEvent
});
Assert.Equal(2, vm.Value);
Assert.Equal(1, parameter);
view.Command3.RaiseEvent(new MouseButtonEventArgs(Mouse.PrimaryDevice, 0, MouseButton.Left)
{
RoutedEvent = UIElement.MouseUpEvent
});
Assert.Equal(2, parameter);
Assert.Equal(2, vm.Value);
}
public void CommandBindNestedCommandWireup()
{
var vm = new CommandBindViewModel()
{
NestedViewModel = new FakeNestedViewModel()
};
var view = new CommandBindView {
ViewModel = vm
};
var fixture = new CommandBinderImplementation();
var disp = fixture.BindCommand(vm, view, m => m.NestedViewModel.NestedCommand, x => x.Command1);
Assert.Equal(vm.NestedViewModel.NestedCommand, view.Command1.Command);
}
public void CommandBindSetsInitialEnabledState_False()
{
var vm = new CommandBindViewModel();
var view = new CommandBindView()
{
ViewModel = vm
};
var fixture = new CommandBinderImplementation();
var canExecute1 = new BehaviorSubject <bool>(false);
var cmd1 = new ReactiveCommand(canExecute1);
vm.Command1 = cmd1;
var disp = fixture.BindCommand(vm, view, x => x.Command1, x => x.Command1);
Assert.False(view.Command1.IsEnabled);
}
public void CommandBindToExplicitEventWireup()
{
var vm = new WinformCommandBindViewModel();
var view = new WinformCommandBindView {
ViewModel = vm
};
var fixture = new CommandBinderImplementation();
var invokeCount = 0;
vm.Command2.Subscribe(_ => invokeCount += 1);
var disp = fixture.BindCommand(vm, view, x => x.Command2, x => x.Command2, "MouseUp");
view.Command2.RaiseMouseUpEvent(new MouseEventArgs(MouseButtons.Left, 1, 0, 0, 0));
disp.Dispose();
view.Command2.RaiseMouseUpEvent(new MouseEventArgs(MouseButtons.Left, 1, 0, 0, 0));
Assert.Equal(1, invokeCount);
}
public void CommandBindByNameWireup()
{
var vm = new CommandBindViewModel();
var view = new CommandBindView()
{
ViewModel = vm
};
var fixture = new CommandBinderImplementation();
Assert.Null(view.Command1.Command);
var disp = fixture.BindCommand(vm, view, x => x.Command1, x => x.Command1);
Assert.Equal(vm.Command1, view.Command1.Command);
var newCmd = new ReactiveCommand();
vm.Command1 = newCmd;
Assert.Equal(newCmd, view.Command1.Command);
disp.Dispose();
Assert.Null(view.Command1.Command);
}
public void CommandBindSetsDisablesCommandWhenCanExecuteChanged()
{
var vm = new CommandBindViewModel();
var view = new CommandBindView()
{
ViewModel = vm
};
var fixture = new CommandBinderImplementation();
var canExecute1 = new BehaviorSubject <bool>(true);
var cmd1 = new ReactiveCommand(canExecute1);
vm.Command1 = cmd1;
var disp = fixture.BindCommand(vm, view, x => x.Command1, x => x.Command1);
Assert.True(view.Command1.IsEnabled);
canExecute1.OnNext(false);
Assert.False(view.Command1.IsEnabled);
}
public void CommandBindByNameWireupWithParameter()
{
var vm = new WinformCommandBindViewModel();
var view = new WinformCommandBindView {
ViewModel = vm
};
ICommandBinderImplementation fixture = new CommandBinderImplementation();
var invokeCount = 0;
vm.Command3.Subscribe(_ => ++ invokeCount);
var disp = CommandBinderImplementationMixins.BindCommand(fixture, vm, view, vm => vm.Command3, v => v.Command1, vm => vm.Parameter);
view.Command1.PerformClick();
Assert.Equal(1, invokeCount);
Assert.Equal(10, vm.ParameterResult);
// update the parameter to ensure its updated when the command is executed
vm.Parameter = 2;
view.Command1.PerformClick();
Assert.Equal(2, invokeCount);
Assert.Equal(20, vm.ParameterResult);
// break the Command3 subscription
var newCmd = ReactiveCommand.Create <int>(i => vm.ParameterResult = i * 2);
vm.Command3 = newCmd;
// ensure that the invoke count does not update and that the Command3 is now using the new math
view.Command1.PerformClick();
Assert.Equal(2, invokeCount);
Assert.Equal(4, vm.ParameterResult);
disp.Dispose();
}
