// Copyright 2018 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

module views_bridge_mac.mojom;

import "mojo/public/mojom/base/string16.mojom";
import "ui/base/mojo/ui_base_types.mojom";
import "ui/gfx/geometry/mojo/geometry.mojom";
import "ui/gfx/mojo/ca_layer_params.mojom";

// Ways of changing the visibility of the bridged NSWindow.
enum WindowVisibilityState {
  // Hides with -[NSWindow orderOut:].
  kHideWindow,
  // Shows with -[NSWindow makeKeyAndOrderFront:].
  kShowAndActivateWindow,
  // Shows with -[NSWindow orderWindow:..]. Orders the window above its parent
  // if it has one.
  kShowInactive
};

struct BridgedNativeWidgetInitParams {
  ui.mojom.ModalType modal_type;
  // If true, the underlying window potentially be seen through.
  bool is_translucent;
  // If true, then the NSWindow is set to have a shadow using
  // -[NSWindow setHasShadow:YES].
  bool has_window_server_shadow;
  // If true, the NSWindow's collection behavior is set to include
  // NSWindowCollectionBehaviorParticipatesInCycle (this is not the
  // default for NSWindows with NSBorderlessWindowMask).
  bool force_into_collection_cycle;
};

// The interface through which a NativeWidgetMac may interact with an NSWindow
// in another process.
interface BridgedNativeWidget {
  // Initialize the window's style.
  InitWindow(BridgedNativeWidgetInitParams params);

  // Initialize the view to display compositor output. This will send the
  // current visibility and dimensions (and any future updates) to the
  // BridgedNativeWidgetHost.
  InitCompositorView();

  // Create the NSView to be the content view for the window.
  CreateContentView(gfx.mojom.Rect bounds);

  // Destroy the content NSView for this window. Note that the window will
  // become blank once this has been called.
  DestroyContentView();

  // Initiate the closing of the window (the closing may be animated or posted
  // to be run later).
  CloseWindow();

  // Immediately close the window (which will have the consequence of deleting
  // |this| and its host).
  CloseWindowNow();

  // Specify initial bounds for the window via |new_bounds| in screen
  // coordinates. It is invalid for |new_bounds| to have an empty size and
  // non-zero position. The size of the window will be expanded so that the
  // content size will be at least |minimum_content_size|. The bounds are offset
  // by |parent_offset| (this isn't incorporated directly into |new_bounds| for
  // the aforementioned checks of |new_bounds|' position).
  SetInitialBounds(gfx.mojom.Rect new_bounds,
                   gfx.mojom.Size minimum_content_size,
                   gfx.mojom.Vector2d parent_offset);

  // Specify new bounds for the window via |new_bounds| in screen coordinates.
  // The size of the window will be expanded so that the content size will be
  // at least |minimum_content_size|.
  SetBounds(gfx.mojom.Rect new_bounds,
            gfx.mojom.Size minimum_content_size);

  // Sets the desired visibility of the window and updates the visibility of
  // descendant windows where necessary.
  SetVisibilityState(WindowVisibilityState new_state);

  // Sets the collection behavior so that the window will or will not be visible
  // on all spaces.
  SetVisibleOnAllSpaces(bool always_visible);

  // Called by NativeWidgetMac to initiate a transition to the specified target
  // fullscreen state.
  SetFullscreen(bool fullscreen);

  // Miniaturize or deminiaturize the window.
  SetMiniaturized(bool miniaturized);

  // Called by NativeWidgetMac when the window size constraints change.
  SetSizeConstraints(gfx.mojom.Size min_size,
                     gfx.mojom.Size max_size,
                     bool is_resizable,
                     bool is_maximizable);

  // Set the opacity of the NSWindow.
  SetOpacity(float opacity);

  // Set the content aspect ratio of the NSWindow.
  SetContentAspectRatio(gfx.mojom.SizeF aspect_ratio);

  // Specify the content to draw in the NSView.
  SetCALayerParams(gfx.mojom.CALayerParams ca_layer_params);

  // Set the NSWindow's title text.
  SetWindowTitle(mojo_base.mojom.String16 title);

  // Make the content view be the first responder for the NSWindow.
  MakeFirstResponder();

  // Clear the touchbar.
  ClearTouchBar();

  // Acquiring mouse capture first steals capture from any existing
  // CocoaMouseCaptureDelegate, then captures all mouse events until released.
  AcquireCapture();
  ReleaseCapture();
};