#include "mojo/services/public/cpp/view_manager/view.h"
+#include "mojo/public/cpp/application/service_provider_impl.h"
#include "mojo/services/public/cpp/view_manager/lib/view_manager_client_impl.h"
#include "mojo/services/public/cpp/view_manager/lib/view_private.h"
-#include "mojo/services/public/cpp/view_manager/node.h"
#include "mojo/services/public/cpp/view_manager/view_observer.h"
#include "ui/gfx/canvas.h"
namespace mojo {
-namespace view_manager {
namespace {
-class ScopedDestructionNotifier {
+
+void NotifyViewTreeChangeAtReceiver(
+ View* receiver,
+ const ViewObserver::TreeChangeParams& params,
+ bool change_applied) {
+ ViewObserver::TreeChangeParams local_params = params;
+ local_params.receiver = receiver;
+ if (change_applied) {
+ FOR_EACH_OBSERVER(ViewObserver,
+ *ViewPrivate(receiver).observers(),
+ OnTreeChanged(local_params));
+ } else {
+ FOR_EACH_OBSERVER(ViewObserver,
+ *ViewPrivate(receiver).observers(),
+ OnTreeChanging(local_params));
+ }
+}
+
+void NotifyViewTreeChangeUp(
+ View* start_at,
+ const ViewObserver::TreeChangeParams& params,
+ bool change_applied) {
+ for (View* current = start_at; current; current = current->parent())
+ NotifyViewTreeChangeAtReceiver(current, params, change_applied);
+}
+
+void NotifyViewTreeChangeDown(
+ View* start_at,
+ const ViewObserver::TreeChangeParams& params,
+ bool change_applied) {
+ NotifyViewTreeChangeAtReceiver(start_at, params, change_applied);
+ View::Children::const_iterator it = start_at->children().begin();
+ for (; it != start_at->children().end(); ++it)
+ NotifyViewTreeChangeDown(*it, params, change_applied);
+}
+
+void NotifyViewTreeChange(
+ const ViewObserver::TreeChangeParams& params,
+ bool change_applied) {
+ NotifyViewTreeChangeDown(params.target, params, change_applied);
+ if (params.old_parent)
+ NotifyViewTreeChangeUp(params.old_parent, params, change_applied);
+ if (params.new_parent)
+ NotifyViewTreeChangeUp(params.new_parent, params, change_applied);
+}
+
+class ScopedTreeNotifier {
+ public:
+ ScopedTreeNotifier(View* target, View* old_parent, View* new_parent) {
+ params_.target = target;
+ params_.old_parent = old_parent;
+ params_.new_parent = new_parent;
+ NotifyViewTreeChange(params_, false);
+ }
+ ~ScopedTreeNotifier() {
+ NotifyViewTreeChange(params_, true);
+ }
+
+ private:
+ ViewObserver::TreeChangeParams params_;
+
+ DISALLOW_COPY_AND_ASSIGN(ScopedTreeNotifier);
+};
+
+void RemoveChildImpl(View* child, View::Children* children) {
+ View::Children::iterator it =
+ std::find(children->begin(), children->end(), child);
+ if (it != children->end()) {
+ children->erase(it);
+ ViewPrivate(child).ClearParent();
+ }
+}
+
+class ScopedOrderChangedNotifier {
public:
- explicit ScopedDestructionNotifier(View* view)
- : view_(view) {
- FOR_EACH_OBSERVER(
- ViewObserver,
- *ViewPrivate(view_).observers(),
- OnViewDestroy(view_, ViewObserver::DISPOSITION_CHANGING));
+ ScopedOrderChangedNotifier(View* view,
+ View* relative_view,
+ OrderDirection direction)
+ : view_(view),
+ relative_view_(relative_view),
+ direction_(direction) {
+ FOR_EACH_OBSERVER(ViewObserver,
+ *ViewPrivate(view_).observers(),
+ OnViewReordering(view_, relative_view_, direction_));
}
- ~ScopedDestructionNotifier() {
- FOR_EACH_OBSERVER(
- ViewObserver,
- *ViewPrivate(view_).observers(),
- OnViewDestroy(view_, ViewObserver::DISPOSITION_CHANGED));
+ ~ScopedOrderChangedNotifier() {
+ FOR_EACH_OBSERVER(ViewObserver,
+ *ViewPrivate(view_).observers(),
+ OnViewReordered(view_, relative_view_, direction_));
}
private:
View* view_;
+ View* relative_view_;
+ OrderDirection direction_;
- DISALLOW_COPY_AND_ASSIGN(ScopedDestructionNotifier);
+ DISALLOW_COPY_AND_ASSIGN(ScopedOrderChangedNotifier);
};
+
+// Returns true if the order actually changed.
+bool ReorderImpl(View::Children* children,
+ View* view,
+ View* relative,
+ OrderDirection direction) {
+ DCHECK(relative);
+ DCHECK_NE(view, relative);
+ DCHECK_EQ(view->parent(), relative->parent());
+
+ const size_t child_i =
+ std::find(children->begin(), children->end(), view) - children->begin();
+ const size_t target_i =
+ std::find(children->begin(), children->end(), relative) -
+ children->begin();
+ if ((direction == ORDER_DIRECTION_ABOVE && child_i == target_i + 1) ||
+ (direction == ORDER_DIRECTION_BELOW && child_i + 1 == target_i)) {
+ return false;
+ }
+
+ ScopedOrderChangedNotifier notifier(view, relative, direction);
+
+ const size_t dest_i = direction == ORDER_DIRECTION_ABOVE
+ ? (child_i < target_i ? target_i : target_i + 1)
+ : (child_i < target_i ? target_i - 1 : target_i);
+ children->erase(children->begin() + child_i);
+ children->insert(children->begin() + dest_i, view);
+
+ return true;
+}
+
+class ScopedSetBoundsNotifier {
+ public:
+ ScopedSetBoundsNotifier(View* view,
+ const gfx::Rect& old_bounds,
+ const gfx::Rect& new_bounds)
+ : view_(view),
+ old_bounds_(old_bounds),
+ new_bounds_(new_bounds) {
+ FOR_EACH_OBSERVER(ViewObserver,
+ *ViewPrivate(view_).observers(),
+ OnViewBoundsChanging(view_, old_bounds_, new_bounds_));
+ }
+ ~ScopedSetBoundsNotifier() {
+ FOR_EACH_OBSERVER(ViewObserver,
+ *ViewPrivate(view_).observers(),
+ OnViewBoundsChanged(view_, old_bounds_, new_bounds_));
+ }
+
+ private:
+ View* view_;
+ const gfx::Rect old_bounds_;
+ const gfx::Rect new_bounds_;
+
+ DISALLOW_COPY_AND_ASSIGN(ScopedSetBoundsNotifier);
+};
+
+// Some operations are only permitted in the connection that created the view.
+bool OwnsView(ViewManager* manager, View* view) {
+ return !manager ||
+ static_cast<ViewManagerClientImpl*>(manager)->OwnsView(view->id());
+}
+
} // namespace
+////////////////////////////////////////////////////////////////////////////////
+// View, public:
+
// static
-View* View::Create(ViewManager* manager) {
- View* view = new View(manager);
- static_cast<ViewManagerClientImpl*>(manager)->AddView(view);
+View* View::Create(ViewManager* view_manager) {
+ View* view = new View(view_manager);
+ static_cast<ViewManagerClientImpl*>(view_manager)->AddView(view);
return view;
}
void View::Destroy() {
+ if (!OwnsView(manager_, this))
+ return;
+
if (manager_)
static_cast<ViewManagerClientImpl*>(manager_)->DestroyView(id_);
+ while (!children_.empty()) {
+ View* child = children_.front();
+ if (!OwnsView(manager_, child)) {
+ ViewPrivate(child).ClearParent();
+ children_.erase(children_.begin());
+ } else {
+ child->Destroy();
+ DCHECK(std::find(children_.begin(), children_.end(), child) ==
+ children_.end());
+ }
+ }
LocalDestroy();
}
+void View::SetBounds(const gfx::Rect& bounds) {
+ if (!OwnsView(manager_, this))
+ return;
+
+ if (manager_)
+ static_cast<ViewManagerClientImpl*>(manager_)->SetBounds(id_, bounds);
+ LocalSetBounds(bounds_, bounds);
+}
+
+void View::SetVisible(bool value) {
+ if (manager_)
+ static_cast<ViewManagerClientImpl*>(manager_)->SetVisible(id_, value);
+}
+
void View::AddObserver(ViewObserver* observer) {
observers_.AddObserver(observer);
}
observers_.RemoveObserver(observer);
}
+void View::AddChild(View* child) {
+ // TODO(beng): not necessarily valid to all connections, but possibly to the
+ // embeddee in an embedder-embeddee relationship.
+ if (manager_)
+ CHECK_EQ(ViewPrivate(child).view_manager(), manager_);
+ LocalAddChild(child);
+ if (manager_)
+ static_cast<ViewManagerClientImpl*>(manager_)->AddChild(child->id(), id_);
+}
+
+void View::RemoveChild(View* child) {
+ // TODO(beng): not necessarily valid to all connections, but possibly to the
+ // embeddee in an embedder-embeddee relationship.
+ if (manager_)
+ CHECK_EQ(ViewPrivate(child).view_manager(), manager_);
+ LocalRemoveChild(child);
+ if (manager_) {
+ static_cast<ViewManagerClientImpl*>(manager_)->RemoveChild(child->id(),
+ id_);
+ }
+}
+
+void View::MoveToFront() {
+ Reorder(parent_->children_.back(), ORDER_DIRECTION_ABOVE);
+}
+
+void View::MoveToBack() {
+ Reorder(parent_->children_.front(), ORDER_DIRECTION_BELOW);
+}
+
+void View::Reorder(View* relative, OrderDirection direction) {
+ if (!LocalReorder(relative, direction))
+ return;
+ if (manager_) {
+ static_cast<ViewManagerClientImpl*>(manager_)->Reorder(id_,
+ relative->id(),
+ direction);
+ }
+}
+
+bool View::Contains(View* child) const {
+ if (manager_)
+ CHECK_EQ(ViewPrivate(child).view_manager(), manager_);
+ for (View* p = child->parent(); p; p = p->parent()) {
+ if (p == this)
+ return true;
+ }
+ return false;
+}
+
+View* View::GetChildById(Id id) {
+ if (id == id_)
+ return this;
+ // TODO(beng): this could be improved depending on how we decide to own views.
+ Children::const_iterator it = children_.begin();
+ for (; it != children_.end(); ++it) {
+ View* view = (*it)->GetChildById(id);
+ if (view)
+ return view;
+ }
+ return NULL;
+}
+
void View::SetContents(const SkBitmap& contents) {
if (manager_) {
static_cast<ViewManagerClientImpl*>(manager_)->SetViewContents(id_,
- contents);
+ contents);
}
}
void View::SetColor(SkColor color) {
- gfx::Canvas canvas(node_->bounds().size(), 1.0f, true);
+ gfx::Canvas canvas(bounds_.size(), 1.0f, true);
canvas.DrawColor(color);
SetContents(skia::GetTopDevice(*canvas.sk_canvas())->accessBitmap(true));
}
-View::View(ViewManager* manager)
- : id_(static_cast<ViewManagerClientImpl*>(manager)->CreateView()),
- node_(NULL),
- manager_(manager) {}
+void View::SetFocus() {
+ if (manager_)
+ static_cast<ViewManagerClientImpl*>(manager_)->SetFocus(id_);
+}
+
+void View::Embed(const String& url) {
+ static_cast<ViewManagerClientImpl*>(manager_)->Embed(url, id_);
+}
+
+scoped_ptr<ServiceProvider>
+ View::Embed(const String& url,
+ scoped_ptr<ServiceProviderImpl> exported_services) {
+ scoped_ptr<ServiceProvider> imported_services;
+ // BindToProxy() takes ownership of |exported_services|.
+ ServiceProviderImpl* registry = exported_services.release();
+ ServiceProviderPtr sp;
+ if (registry) {
+ BindToProxy(registry, &sp);
+ imported_services.reset(registry->CreateRemoteServiceProvider());
+ }
+ static_cast<ViewManagerClientImpl*>(manager_)->Embed(url, id_, sp.Pass());
+ return imported_services.Pass();
+}
+
+////////////////////////////////////////////////////////////////////////////////
+// View, protected:
View::View()
- : id_(-1),
- node_(NULL),
- manager_(NULL) {}
+ : manager_(NULL),
+ id_(static_cast<Id>(-1)),
+ parent_(NULL) {}
View::~View() {
- ScopedDestructionNotifier notifier(this);
+ FOR_EACH_OBSERVER(ViewObserver, observers_, OnViewDestroying(this));
+ if (parent_)
+ parent_->LocalRemoveChild(this);
// TODO(beng): It'd be better to do this via a destruction observer in the
// ViewManagerClientImpl.
if (manager_)
static_cast<ViewManagerClientImpl*>(manager_)->RemoveView(id_);
+ FOR_EACH_OBSERVER(ViewObserver, observers_, OnViewDestroyed(this));
}
+////////////////////////////////////////////////////////////////////////////////
+// View, private:
+
+View::View(ViewManager* manager)
+ : manager_(manager),
+ id_(static_cast<ViewManagerClientImpl*>(manager_)->CreateView()),
+ parent_(NULL) {}
+
void View::LocalDestroy() {
delete this;
}
-} // namespace view_manager
+void View::LocalAddChild(View* child) {
+ ScopedTreeNotifier notifier(child, child->parent(), this);
+ if (child->parent())
+ RemoveChildImpl(child, &child->parent_->children_);
+ children_.push_back(child);
+ child->parent_ = this;
+}
+
+void View::LocalRemoveChild(View* child) {
+ DCHECK_EQ(this, child->parent());
+ ScopedTreeNotifier notifier(child, this, NULL);
+ RemoveChildImpl(child, &children_);
+}
+
+bool View::LocalReorder(View* relative, OrderDirection direction) {
+ return ReorderImpl(&parent_->children_, this, relative, direction);
+}
+
+void View::LocalSetBounds(const gfx::Rect& old_bounds,
+ const gfx::Rect& new_bounds) {
+ DCHECK(old_bounds == bounds_);
+ ScopedSetBoundsNotifier notifier(this, old_bounds, new_bounds);
+ bounds_ = new_bounds;
+}
+
} // namespace mojo
projects / platform / framework / web / crosswalk.git / blobdiff