blob: 35a110f3e6184870537eeaae450a4d9434423adc [file] [log] [blame]
// Copyright 2014 The PDFium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
// Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
#include "xfa/fwl/cfwl_notedriver.h"
#include <algorithm>
#include <utility>
#include "build/build_config.h"
#include "core/fxcrt/fx_extension.h"
#include "xfa/fwl/cfwl_app.h"
#include "xfa/fwl/cfwl_event.h"
#include "xfa/fwl/cfwl_messagekey.h"
#include "xfa/fwl/cfwl_messagekillfocus.h"
#include "xfa/fwl/cfwl_messagemouse.h"
#include "xfa/fwl/cfwl_messagemousewheel.h"
#include "xfa/fwl/cfwl_messagesetfocus.h"
#include "xfa/fwl/cfwl_widgetmgr.h"
#include "xfa/fwl/fwl_widgetdef.h"
namespace {
uint64_t g_next_listener_key = 1;
} // namespace
CFWL_NoteDriver::CFWL_NoteDriver() = default;
CFWL_NoteDriver::~CFWL_NoteDriver() = default;
void CFWL_NoteDriver::Trace(cppgc::Visitor* visitor) const {
for (const auto& item : m_eventTargets)
item.second->Trace(visitor);
visitor->Trace(m_pHover);
visitor->Trace(m_pFocus);
visitor->Trace(m_pGrab);
}
void CFWL_NoteDriver::SendEvent(CFWL_Event* pNote) {
for (const auto& pair : m_eventTargets) {
if (pair.second->IsValid())
pair.second->ProcessEvent(pNote);
}
}
void CFWL_NoteDriver::RegisterEventTarget(CFWL_Widget* pListener,
CFWL_Widget* pEventSource) {
uint64_t key = pListener->GetEventKey();
if (key == 0) {
key = g_next_listener_key++;
pListener->SetEventKey(key);
}
if (!m_eventTargets[key])
m_eventTargets[key] = std::make_unique<Target>(pListener);
m_eventTargets[key]->SetEventSource(pEventSource);
}
void CFWL_NoteDriver::UnregisterEventTarget(CFWL_Widget* pListener) {
uint64_t key = pListener->GetEventKey();
if (key == 0)
return;
auto it = m_eventTargets.find(key);
if (it != m_eventTargets.end())
it->second->Invalidate();
}
void CFWL_NoteDriver::NotifyTargetHide(CFWL_Widget* pNoteTarget) {
if (m_pFocus == pNoteTarget)
m_pFocus = nullptr;
if (m_pHover == pNoteTarget)
m_pHover = nullptr;
if (m_pGrab == pNoteTarget)
m_pGrab = nullptr;
}
void CFWL_NoteDriver::NotifyTargetDestroy(CFWL_Widget* pNoteTarget) {
if (m_pFocus == pNoteTarget)
m_pFocus = nullptr;
if (m_pHover == pNoteTarget)
m_pHover = nullptr;
if (m_pGrab == pNoteTarget)
m_pGrab = nullptr;
UnregisterEventTarget(pNoteTarget);
}
void CFWL_NoteDriver::ProcessMessage(CFWL_Message* pMessage) {
CFWL_Widget* pMessageForm = pMessage->GetDstTarget();
if (!pMessageForm)
return;
if (!DispatchMessage(pMessage, pMessageForm))
return;
if (pMessage->GetType() == CFWL_Message::Type::kMouse)
MouseSecondary(pMessage);
}
bool CFWL_NoteDriver::DispatchMessage(CFWL_Message* pMessage,
CFWL_Widget* pMessageForm) {
switch (pMessage->GetType()) {
case CFWL_Message::Type::kSetFocus: {
if (!DoSetFocus(pMessage, pMessageForm))
return false;
break;
}
case CFWL_Message::Type::kKillFocus: {
if (!DoKillFocus(pMessage, pMessageForm))
return false;
break;
}
case CFWL_Message::Type::kKey: {
if (!DoKey(pMessage, pMessageForm))
return false;
break;
}
case CFWL_Message::Type::kMouse: {
if (!DoMouse(pMessage, pMessageForm))
return false;
break;
}
case CFWL_Message::Type::kMouseWheel: {
if (!DoWheel(pMessage, pMessageForm))
return false;
break;
}
default:
break;
}
IFWL_WidgetDelegate* pDelegate = pMessage->GetDstTarget()->GetDelegate();
if (pDelegate)
pDelegate->OnProcessMessage(pMessage);
return true;
}
bool CFWL_NoteDriver::DoSetFocus(CFWL_Message* pMessage,
CFWL_Widget* pMessageForm) {
m_pFocus = pMessage->GetDstTarget();
return true;
}
bool CFWL_NoteDriver::DoKillFocus(CFWL_Message* pMessage,
CFWL_Widget* pMessageForm) {
if (m_pFocus == pMessage->GetDstTarget())
m_pFocus = nullptr;
return true;
}
bool CFWL_NoteDriver::DoKey(CFWL_Message* pMessage, CFWL_Widget* pMessageForm) {
CFWL_MessageKey* pMsg = static_cast<CFWL_MessageKey*>(pMessage);
#if !BUILDFLAG(IS_APPLE)
if (pMsg->m_dwCmd == CFWL_MessageKey::KeyCommand::kKeyDown &&
pMsg->m_dwKeyCodeOrChar == XFA_FWL_VKEY_Tab) {
return true;
}
#endif
if (m_pFocus) {
pMsg->SetDstTarget(m_pFocus.Get());
return true;
}
if (pMsg->m_dwCmd == CFWL_MessageKey::KeyCommand::kKeyDown &&
pMsg->m_dwKeyCodeOrChar == XFA_FWL_VKEY_Return) {
CFWL_WidgetMgr* pWidgetMgr = pMessageForm->GetFWLApp()->GetWidgetMgr();
CFWL_Widget* pDefButton = pWidgetMgr->GetDefaultButton(pMessageForm);
if (pDefButton) {
pMsg->SetDstTarget(pDefButton);
return true;
}
}
return false;
}
bool CFWL_NoteDriver::DoMouse(CFWL_Message* pMessage,
CFWL_Widget* pMessageForm) {
CFWL_MessageMouse* pMsg = static_cast<CFWL_MessageMouse*>(pMessage);
if (pMsg->m_dwCmd == CFWL_MessageMouse::MouseCommand::kLeave ||
pMsg->m_dwCmd == CFWL_MessageMouse::MouseCommand::kHover ||
pMsg->m_dwCmd == CFWL_MessageMouse::MouseCommand::kEnter) {
return !!pMsg->GetDstTarget();
}
if (pMsg->GetDstTarget() != pMessageForm)
pMsg->m_pos = pMsg->GetDstTarget()->TransformTo(pMessageForm, pMsg->m_pos);
if (!DoMouseEx(pMsg, pMessageForm))
pMsg->SetDstTarget(pMessageForm);
return true;
}
bool CFWL_NoteDriver::DoWheel(CFWL_Message* pMessage,
CFWL_Widget* pMessageForm) {
CFWL_WidgetMgr* pWidgetMgr = pMessageForm->GetFWLApp()->GetWidgetMgr();
CFWL_MessageMouseWheel* pMsg = static_cast<CFWL_MessageMouseWheel*>(pMessage);
CFWL_Widget* pDst = pWidgetMgr->GetWidgetAtPoint(pMessageForm, pMsg->pos());
if (!pDst)
return false;
pMsg->set_pos(pMessageForm->TransformTo(pDst, pMsg->pos()));
pMsg->SetDstTarget(pDst);
return true;
}
bool CFWL_NoteDriver::DoMouseEx(CFWL_Message* pMessage,
CFWL_Widget* pMessageForm) {
CFWL_WidgetMgr* pWidgetMgr = pMessageForm->GetFWLApp()->GetWidgetMgr();
CFWL_Widget* pTarget = nullptr;
if (m_pGrab)
pTarget = m_pGrab.Get();
CFWL_MessageMouse* pMsg = static_cast<CFWL_MessageMouse*>(pMessage);
if (!pTarget)
pTarget = pWidgetMgr->GetWidgetAtPoint(pMessageForm, pMsg->m_pos);
if (!pTarget)
return false;
if (pTarget && pMessageForm != pTarget)
pMsg->m_pos = pMessageForm->TransformTo(pTarget, pMsg->m_pos);
pMsg->SetDstTarget(pTarget);
return true;
}
void CFWL_NoteDriver::MouseSecondary(CFWL_Message* pMessage) {
CFWL_Widget* pTarget = pMessage->GetDstTarget();
if (pTarget == m_pHover)
return;
CFWL_MessageMouse* pMsg = static_cast<CFWL_MessageMouse*>(pMessage);
if (m_pHover) {
CFWL_MessageMouse msLeave(
m_pHover.Get(), CFWL_MessageMouse::MouseCommand::kLeave,
Mask<XFA_FWL_KeyFlag>(),
pTarget->TransformTo(m_pHover.Get(), pMsg->m_pos));
DispatchMessage(&msLeave, nullptr);
}
if (pTarget->GetClassID() == FWL_Type::Form) {
m_pHover = nullptr;
return;
}
m_pHover = pTarget;
CFWL_MessageMouse msHover(pTarget, CFWL_MessageMouse::MouseCommand::kHover,
Mask<XFA_FWL_KeyFlag>(), pMsg->m_pos);
DispatchMessage(&msHover, nullptr);
}
CFWL_NoteDriver::Target::Target(CFWL_Widget* pListener)
: m_pListener(pListener) {}
CFWL_NoteDriver::Target::~Target() = default;
void CFWL_NoteDriver::Target::Trace(cppgc::Visitor* visitor) const {
visitor->Trace(m_pListener);
for (auto& widget : m_widgets)
visitor->Trace(widget);
}
void CFWL_NoteDriver::Target::SetEventSource(CFWL_Widget* pSource) {
if (pSource)
m_widgets.insert(pSource);
}
bool CFWL_NoteDriver::Target::ProcessEvent(CFWL_Event* pEvent) {
IFWL_WidgetDelegate* pDelegate = m_pListener->GetDelegate();
if (!pDelegate)
return false;
if (!m_widgets.empty() && m_widgets.count(pEvent->GetSrcTarget()) == 0)
return false;
pDelegate->OnProcessEvent(pEvent);
return true;
}