blob: 821dd5c25ae772b26415a1ca0ed311683530fd1e [file] [log] [blame]
// Copyright 2014 PDFium Authors. All rights reserved.
// 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 "third_party/base/ptr_util.h"
#include "third_party/base/stl_util.h"
#include "xfa/fwl/cfwl_app.h"
#include "xfa/fwl/cfwl_eventtarget.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"
CFWL_NoteDriver::CFWL_NoteDriver() = default;
CFWL_NoteDriver::~CFWL_NoteDriver() = default;
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) {
uint32_t key = pListener->GetEventKey();
if (key == 0) {
do {
key = rand();
} while (key == 0 || pdfium::ContainsKey(m_eventTargets, key));
pListener->SetEventKey(key);
}
if (!m_eventTargets[key])
m_eventTargets[key] = pdfium::MakeUnique<CFWL_EventTarget>(pListener);
m_eventTargets[key]->SetEventSource(pEventSource);
}
void CFWL_NoteDriver::UnregisterEventTarget(CFWL_Widget* pListener) {
uint32_t key = pListener->GetEventKey();
if (key == 0)
return;
auto it = m_eventTargets.find(key);
if (it != m_eventTargets.end())
it->second->FlagInvalid();
}
bool CFWL_NoteDriver::SetFocus(CFWL_Widget* pFocus) {
if (m_pFocus == pFocus)
return true;
CFWL_Widget* pPrev = m_pFocus.Get();
m_pFocus = pFocus;
if (pPrev) {
if (IFWL_WidgetDelegate* pDelegate = pPrev->GetDelegate()) {
CFWL_MessageKillFocus ms(pPrev, pPrev);
pDelegate->OnProcessMessage(&ms);
}
}
if (pFocus) {
if (IFWL_WidgetDelegate* pDelegate = pFocus->GetDelegate()) {
CFWL_MessageSetFocus ms(nullptr, pFocus);
pDelegate->OnProcessMessage(&ms);
}
}
return true;
}
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(std::unique_ptr<CFWL_Message> pMessage) {
CFWL_Widget* pMessageForm = pMessage->GetDstTarget();
if (!pMessageForm)
return;
if (!DispatchMessage(pMessage.get(), pMessageForm))
return;
if (pMessage->GetType() == CFWL_Message::Type::Mouse)
MouseSecondary(pMessage.get());
}
bool CFWL_NoteDriver::DispatchMessage(CFWL_Message* pMessage,
CFWL_Widget* pMessageForm) {
switch (pMessage->GetType()) {
case CFWL_Message::Type::SetFocus: {
if (!DoSetFocus(pMessage, pMessageForm))
return false;
break;
}
case CFWL_Message::Type::KillFocus: {
if (!DoKillFocus(pMessage, pMessageForm))
return false;
break;
}
case CFWL_Message::Type::Key: {
if (!DoKey(pMessage, pMessageForm))
return false;
break;
}
case CFWL_Message::Type::Mouse: {
if (!DoMouse(pMessage, pMessageForm))
return false;
break;
}
case CFWL_Message::Type::MouseWheel: {
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 !defined(OS_MACOSX)
if (pMsg->m_dwCmd == FWL_KeyCommand::KeyDown &&
pMsg->m_dwKeyCode == XFA_FWL_VKEY_Tab) {
CFWL_WidgetMgr* pWidgetMgr = pMessageForm->GetOwnerApp()->GetWidgetMgr();
CFWL_Widget* pForm = GetMessageForm(pMsg->GetDstTarget());
CFWL_Widget* pFocus = m_pFocus.Get();
if (m_pFocus && pWidgetMgr->GetSystemFormWidget(m_pFocus.Get()) != pForm)
pFocus = nullptr;
CFWL_Widget* pNextTabStop = nullptr;
if (pForm) {
pNextTabStop = CFWL_WidgetMgr::NextTab(pForm, pFocus);
if (!pNextTabStop)
pNextTabStop = CFWL_WidgetMgr::NextTab(pForm, nullptr);
}
if (pNextTabStop == pFocus)
return true;
if (pNextTabStop)
SetFocus(pNextTabStop);
return true;
}
#endif
if (m_pFocus) {
pMsg->SetDstTarget(m_pFocus.Get());
return true;
}
if (pMsg->m_dwCmd == FWL_KeyCommand::KeyDown &&
pMsg->m_dwKeyCode == XFA_FWL_VKEY_Return) {
CFWL_WidgetMgr* pWidgetMgr = pMessageForm->GetOwnerApp()->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 == FWL_MouseCommand::Leave ||
pMsg->m_dwCmd == FWL_MouseCommand::Hover ||
pMsg->m_dwCmd == FWL_MouseCommand::Enter) {
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->GetOwnerApp()->GetWidgetMgr();
CFWL_MessageMouseWheel* pMsg = static_cast<CFWL_MessageMouseWheel*>(pMessage);
CFWL_Widget* pDst = pWidgetMgr->GetWidgetAtPoint(pMessageForm, pMsg->m_pos);
if (!pDst)
return false;
pMsg->m_pos = pMessageForm->TransformTo(pDst, pMsg->m_pos);
pMsg->SetDstTarget(pDst);
return true;
}
bool CFWL_NoteDriver::DoMouseEx(CFWL_Message* pMessage,
CFWL_Widget* pMessageForm) {
CFWL_WidgetMgr* pWidgetMgr = pMessageForm->GetOwnerApp()->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(), FWL_MouseCommand::Leave, 0,
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, FWL_MouseCommand::Hover, 0, pMsg->m_pos);
DispatchMessage(&msHover, nullptr);
}
CFWL_Widget* CFWL_NoteDriver::GetMessageForm(CFWL_Widget* pDstTarget) {
if (!pDstTarget)
return nullptr;
CFWL_WidgetMgr* pWidgetMgr = pDstTarget->GetOwnerApp()->GetWidgetMgr();
return pWidgetMgr->GetSystemFormWidget(pDstTarget);
}
void CFWL_NoteDriver::ClearEventTargets() {
auto it = m_eventTargets.begin();
while (it != m_eventTargets.end()) {
auto old = it++;
if (!old->second->IsValid())
m_eventTargets.erase(old);
}
}