this.toolWindow = descriptor.getToolWindow();
this.resourceManager = descriptor.getResourceManager();
dockedContainer.addPropertyChangeListener("active", new GradientActivationListener(descriptor));
animBackStart = new MutableColor(resourceManager.getColor(ResourceManager.TWTB_BACKGROUND_DISABLED_START));
animBackEnd = new MutableColor(0, 0, 0);
animTextColor = new MutableColor(0, 0, 0);
flashingAnimation = new GradientAnimation(700f);
animation = new GradientAnimation();