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#include "cru/ui/controls/Control.h"
#include "cru/platform/gui/Cursor.h"
#include "cru/platform/gui/UiApplication.h"
#include "cru/ui/host/WindowHost.h"
#include "cru/ui/render/RenderObject.h"
#include "cru/ui/style/StyleRuleSet.h"
namespace cru::ui::controls {
using platform::gui::ICursor;
using platform::gui::IUiApplication;
using platform::gui::SystemCursorType;
Control::Control() {
style_rule_set_ = std::make_shared<style::StyleRuleSet>();
style_rule_set_bind_ =
std::make_unique<style::StyleRuleSetBind>(this, style_rule_set_);
MouseEnterEvent()->Direct()->AddHandler([this](events::MouseEventArgs&) {
this->is_mouse_over_ = true;
this->OnMouseHoverChange(true);
});
MouseLeaveEvent()->Direct()->AddHandler([this](events::MouseEventArgs&) {
this->is_mouse_over_ = false;
this->OnMouseHoverChange(true);
});
}
Control::~Control() { RemoveFromParent(); }
void Control::SetParent(Control* parent) {
if (parent_ == parent) return;
auto old_parent = parent_;
parent_ = parent;
OnParentChangedCore(old_parent, parent);
}
void Control::RemoveFromParent() {
if (parent_) {
parent_->RemoveChild(this);
}
}
bool Control::HasFocus() {
auto host = GetWindowHost();
if (host == nullptr) return false;
return host->GetFocusControl() == this;
}
bool Control::CaptureMouse() {
auto host = GetWindowHost();
if (host == nullptr) return false;
return host->CaptureMouseFor(this);
}
void Control::SetFocus() {
auto host = GetWindowHost();
if (host == nullptr) return;
host->SetFocusControl(this);
}
bool Control::ReleaseMouse() {
auto host = GetWindowHost();
if (host == nullptr) return false;
return host->CaptureMouseFor(nullptr);
}
bool Control::IsMouseCaptured() {
auto host = GetWindowHost();
if (host == nullptr) return false;
return host->GetMouseCaptureControl() == this;
}
std::shared_ptr<ICursor> Control::GetCursor() { return cursor_; }
std::shared_ptr<ICursor> Control::GetInheritedCursor() {
Control* control = this;
while (control != nullptr) {
const auto cursor = control->GetCursor();
if (cursor != nullptr) return cursor;
control = control->GetParent();
}
return IUiApplication::GetInstance()->GetCursorManager()->GetSystemCursor(
SystemCursorType::Arrow);
}
void Control::SetCursor(std::shared_ptr<ICursor> cursor) {
cursor_ = std::move(cursor);
const auto host = GetWindowHost();
if (host != nullptr) {
host->UpdateCursor();
}
}
std::shared_ptr<style::StyleRuleSet> Control::GetStyleRuleSet() {
return style_rule_set_;
}
void Control::OnParentChangedCore(Control* old_parent, Control* new_parent) {
auto new_window_host =
new_parent == nullptr ? nullptr : new_parent->GetWindowHost();
if (window_host_ != new_window_host) {
auto old_host = window_host_;
window_host_ = new_window_host;
OnWindowHostChangedCore(old_host, new_window_host);
}
OnParentChanged(old_parent, new_parent);
}
void Control::OnWindowHostChangedCore(host::WindowHost* old_host,
host::WindowHost* new_host) {
if (old_host != nullptr) {
if (old_host->GetMouseCaptureControl() == this) {
old_host->CaptureMouseFor(nullptr);
}
if (old_host->GetMouseHoverControl() == this) {
old_host->mouse_hover_control_ = nullptr;
}
}
ForEachChild([old_host, new_host](Control* child) {
child->window_host_ = new_host;
child->OnWindowHostChangedCore(old_host, new_host);
});
OnWindowHostChanged(old_host, new_host);
}
} // namespace cru::ui::controls
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