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// Copyright 2016 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_combolist.h"
#include <memory>
#include <utility>
#include "xfa/fwl/cfwl_combobox.h"
#include "xfa/fwl/cfwl_comboedit.h"
#include "xfa/fwl/cfwl_listbox.h"
#include "xfa/fwl/cfwl_messagekey.h"
#include "xfa/fwl/cfwl_messagekillfocus.h"
#include "xfa/fwl/cfwl_messagemouse.h"
CFWL_ComboList::CFWL_ComboList(
const CFWL_App* app,
std::unique_ptr<CFWL_WidgetProperties> properties,
CFWL_Widget* pOuter)
: CFWL_ListBox(app, std::move(properties), pOuter), m_bNotifyOwner(true) {
ASSERT(pOuter);
}
int32_t CFWL_ComboList::MatchItem(const WideString& wsMatch) {
if (wsMatch.IsEmpty())
return -1;
int32_t iCount = CountItems(this);
for (int32_t i = 0; i < iCount; i++) {
CFWL_ListItem* hItem = GetItem(this, i);
WideString wsText = hItem ? hItem->GetText() : L"";
auto pos = wsText.Find(wsMatch.c_str());
if (pos.has_value() && pos.value() == 0)
return i;
}
return -1;
}
void CFWL_ComboList::ChangeSelected(int32_t iSel) {
CFWL_ListItem* hItem = GetItem(this, iSel);
CFWL_ListItem* hOld = GetSelItem(0);
int32_t iOld = GetItemIndex(this, hOld);
if (iOld == iSel)
return;
CFX_RectF rtInvalidate;
if (iOld > -1) {
if (CFWL_ListItem* hOldItem = GetItem(this, iOld))
rtInvalidate = hOldItem->GetRect();
SetSelItem(hOld, false);
}
if (hItem) {
if (CFWL_ListItem* hOldItem = GetItem(this, iSel))
rtInvalidate.Union(hOldItem->GetRect());
CFWL_ListItem* hSel = GetItem(this, iSel);
SetSelItem(hSel, true);
}
if (!rtInvalidate.IsEmpty())
RepaintRect(rtInvalidate);
}
CFX_PointF CFWL_ComboList::ClientToOuter(const CFX_PointF& point) {
CFX_PointF ret = point + CFX_PointF(m_pProperties->m_rtWidget.left,
m_pProperties->m_rtWidget.top);
CFWL_Widget* pOwner = GetOwner();
return pOwner ? pOwner->TransformTo(m_pOuter, ret) : ret;
}
void CFWL_ComboList::OnProcessMessage(CFWL_Message* pMessage) {
if (!pMessage)
return;
CFWL_Message::Type type = pMessage->GetType();
bool backDefault = true;
if (type == CFWL_Message::Type::SetFocus ||
type == CFWL_Message::Type::KillFocus) {
OnDropListFocusChanged(pMessage, type == CFWL_Message::Type::SetFocus);
} else if (type == CFWL_Message::Type::Mouse) {
CFWL_MessageMouse* pMsg = static_cast<CFWL_MessageMouse*>(pMessage);
CFWL_ScrollBar* vertSB = GetVertScrollBar();
if (IsShowScrollBar(true) && vertSB) {
CFX_RectF rect = vertSB->GetWidgetRect();
if (rect.Contains(pMsg->m_pos)) {
pMsg->m_pos -= rect.TopLeft();
vertSB->GetDelegate()->OnProcessMessage(pMsg);
return;
}
}
switch (pMsg->m_dwCmd) {
case FWL_MouseCommand::Move: {
backDefault = false;
OnDropListMouseMove(pMsg);
break;
}
case FWL_MouseCommand::LeftButtonDown: {
backDefault = false;
OnDropListLButtonDown(pMsg);
break;
}
case FWL_MouseCommand::LeftButtonUp: {
backDefault = false;
OnDropListLButtonUp(pMsg);
break;
}
default:
break;
}
} else if (type == CFWL_Message::Type::Key) {
backDefault = !OnDropListKey(static_cast<CFWL_MessageKey*>(pMessage));
}
if (backDefault)
CFWL_ListBox::OnProcessMessage(pMessage);
}
void CFWL_ComboList::OnDropListFocusChanged(CFWL_Message* pMsg, bool bSet) {
if (bSet)
return;
CFWL_MessageKillFocus* pKill = static_cast<CFWL_MessageKillFocus*>(pMsg);
CFWL_ComboBox* pOuter = static_cast<CFWL_ComboBox*>(m_pOuter);
if (pKill->IsFocusedOnWidget(m_pOuter) ||
pKill->IsFocusedOnWidget(pOuter->GetComboEdit())) {
pOuter->ShowDropList(false);
}
}
void CFWL_ComboList::OnDropListMouseMove(CFWL_MessageMouse* pMsg) {
if (GetRTClient().Contains(pMsg->m_pos)) {
if (m_bNotifyOwner)
m_bNotifyOwner = false;
CFWL_ScrollBar* vertSB = GetVertScrollBar();
if (IsShowScrollBar(true) && vertSB) {
CFX_RectF rect = vertSB->GetWidgetRect();
if (rect.Contains(pMsg->m_pos))
return;
}
CFWL_ListItem* hItem = GetItemAtPoint(pMsg->m_pos);
if (!hItem)
return;
ChangeSelected(GetItemIndex(this, hItem));
} else if (m_bNotifyOwner) {
pMsg->m_pos = ClientToOuter(pMsg->m_pos);
CFWL_ComboBox* pOuter = static_cast<CFWL_ComboBox*>(m_pOuter);
pOuter->GetDelegate()->OnProcessMessage(pMsg);
}
}
void CFWL_ComboList::OnDropListLButtonDown(CFWL_MessageMouse* pMsg) {
if (GetRTClient().Contains(pMsg->m_pos))
return;
CFWL_ComboBox* pOuter = static_cast<CFWL_ComboBox*>(m_pOuter);
pOuter->ShowDropList(false);
}
void CFWL_ComboList::OnDropListLButtonUp(CFWL_MessageMouse* pMsg) {
CFWL_ComboBox* pOuter = static_cast<CFWL_ComboBox*>(m_pOuter);
if (m_bNotifyOwner) {
pMsg->m_pos = ClientToOuter(pMsg->m_pos);
pOuter->GetDelegate()->OnProcessMessage(pMsg);
return;
}
CFWL_ScrollBar* vertSB = GetVertScrollBar();
if (IsShowScrollBar(true) && vertSB) {
CFX_RectF rect = vertSB->GetWidgetRect();
if (rect.Contains(pMsg->m_pos))
return;
}
pOuter->ShowDropList(false);
CFWL_ListItem* hItem = GetItemAtPoint(pMsg->m_pos);
if (hItem)
pOuter->ProcessSelChanged(true);
}
bool CFWL_ComboList::OnDropListKey(CFWL_MessageKey* pKey) {
CFWL_ComboBox* pOuter = static_cast<CFWL_ComboBox*>(m_pOuter);
bool bPropagate = false;
if (pKey->m_dwCmd == FWL_KeyCommand::KeyDown) {
uint32_t dwKeyCode = pKey->m_dwKeyCode;
switch (dwKeyCode) {
case FWL_VKEY_Return:
case FWL_VKEY_Escape: {
pOuter->ShowDropList(false);
return true;
}
case FWL_VKEY_Up:
case FWL_VKEY_Down: {
OnDropListKeyDown(pKey);
pOuter->ProcessSelChanged(false);
return true;
}
default: {
bPropagate = true;
break;
}
}
} else if (pKey->m_dwCmd == FWL_KeyCommand::Char) {
bPropagate = true;
}
if (bPropagate) {
pKey->SetDstTarget(m_pOuter);
pOuter->GetDelegate()->OnProcessMessage(pKey);
return true;
}
return false;
}
void CFWL_ComboList::OnDropListKeyDown(CFWL_MessageKey* pKey) {
uint32_t dwKeyCode = pKey->m_dwKeyCode;
switch (dwKeyCode) {
case FWL_VKEY_Up:
case FWL_VKEY_Down:
case FWL_VKEY_Home:
case FWL_VKEY_End: {
CFWL_ComboBox* pOuter = static_cast<CFWL_ComboBox*>(m_pOuter);
CFWL_ListItem* hItem = GetItem(this, pOuter->GetCurrentSelection());
hItem = GetListItem(hItem, dwKeyCode);
if (!hItem)
break;
SetSelection(hItem, hItem, true);
ScrollToVisible(hItem);
CFX_RectF rtInvalidate(0, 0, m_pProperties->m_rtWidget.width,
m_pProperties->m_rtWidget.height);
RepaintRect(rtInvalidate);
break;
}
default:
break;
}
}
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