Merge pull request #4955

TriKriSta (12):
      feat: add a button to search
      feat: add form for search
      feat: add text search
      feat: edit load history for search
      feat: remove search button and add line in context menu
      feat: add search in text in group chats
      feat: optimise search in history
      feat: add hot keys for search
      style: change code in searchInText
      fix: add search symbol ' in history
      refactor: rename hideButton to searchHideButton
      refactor: add/delete checks in search code

CMakeLists.txt

@@ -341,6 +341,8 @@ set(${PROJECT_NAME}_SOURCES
   src/widget/emoticonswidget.h
   src/widget/flowlayout.cpp
   src/widget/flowlayout.h
+  src/widget/searchform.cpp
+  src/widget/searchform.h
   src/widget/form/addfriendform.cpp
   src/widget/form/addfriendform.h
   src/widget/form/chatform.cpp

res.qrc

@@ -51,18 +51,18 @@
         <file>ui/chatArea/scrollBarDownArrow.svg</file>
         <file>ui/chatArea/scrollBarLeftArrow.svg</file>
         <file>ui/chatArea/scrollBarRightArrow.svg</file>
-
         <file>ui/chatForm/buttons.css</file>
         <file>ui/chatForm/callButton.svg</file>
         <file>ui/chatForm/micButton.svg</file>
         <file>ui/chatForm/videoButton.svg</file>
         <file>ui/chatForm/volButton.svg</file>
-
         <file>ui/chatForm/emoteButton.svg</file>
         <file>ui/chatForm/fileButton.svg</file>
         <file>ui/chatForm/screenshotButton.svg</file>
+        <file>ui/chatForm/searchDownButton.svg</file>
+        <file>ui/chatForm/searchHideButton.svg</file>
+        <file>ui/chatForm/searchUpButton.svg</file>
         <file>ui/chatForm/sendButton.svg</file>
-
         <file>ui/emoticonWidget/dot_page.svg</file>
         <file>ui/emoticonWidget/dot_page_current.svg</file>
         <file>ui/emoticonWidget/dot_page_hover.svg</file>

src/chatlog/chatlog.cpp

@@ -815,6 +815,8 @@ void ChatLog::onWorkerTimeout()
 
         // hidden during busy screen
         verticalScrollBar()->show();
+
+        emit workerTimeoutFinished();
     }
 }
 

src/chatlog/chatlog.h

@@ -67,6 +67,7 @@ public:
 
 signals:
     void selectionChanged();
+    void workerTimeoutFinished();
 
 public slots:
     void forceRelayout();

src/chatlog/content/text.cpp

@@ -58,6 +58,38 @@ void Text::setText(const QString& txt)
     dirty = true;
 }
 
+void Text::selectText(const QString &txt, const int index)
+{
+    regenerate();
+
+    if (!doc) {
+        return;
+    }
+
+    auto cursor = doc->find(txt, index);
+
+    if (!cursor.isNull()) {
+        cursor.beginEditBlock();
+        cursor.setPosition(index);
+        cursor.setPosition(index + txt.size(), QTextCursor::KeepAnchor);
+        cursor.endEditBlock();
+
+        QTextCharFormat format;
+        format.setBackground(QBrush(QColor("#ff7626")));
+        cursor.mergeCharFormat(format);
+
+        regenerate();
+        update();
+    }
+}
+
+void Text::deselectText()
+{
+    dirty = true;
+    regenerate();
+    update();
+}
+
 void Text::setWidth(qreal w)
 {
     width = w;

src/chatlog/content/text.h

@@ -36,6 +36,8 @@ public:
     virtual ~Text();
 
     void setText(const QString& txt);
+    void selectText(const QString& txt, const int index);
+    void deselectText();
 
     virtual void setWidth(qreal width) final;
 

src/persistence/history.cpp

@@ -326,6 +326,37 @@ QList<History::DateMessages> History::getChatHistoryCounts(const ToxPk& friendPk
     return counts;
 }
 
+QDateTime History::getDateWhereFindPhrase(const QString& friendPk, const QDateTime& from, QString phrase)
+{
+    QList<QDateTime> counts;
+    auto rowCallback = [&counts](const QVector<QVariant>& row) {
+        counts.append(QDateTime::fromMSecsSinceEpoch(row[0].toLongLong()));
+    };
+
+    phrase.replace("'", "''");
+
+    QString queryText =
+        QString("SELECT timestamp "
+                "FROM history "
+                "LEFT JOIN faux_offline_pending ON history.id = faux_offline_pending.id "
+                "JOIN peers chat ON chat_id = chat.id "
+                "WHERE chat.public_key='%1' "
+                "AND message LIKE '%%2%' "
+                "AND timestamp < '%3' ORDER BY timestamp DESC LIMIT 1;")
+            .arg(friendPk)
+            .arg(phrase)
+            .arg(from.toMSecsSinceEpoch());
+
+
+    db->execNow({queryText, rowCallback});
+
+    if (!counts.isEmpty()) {
+        return counts[0];
+    }
+
+    return QDateTime();
+}
+
 /**
  * @brief Marks a message as sent.
  * Removing message from the faux-offline pending messages list.

src/persistence/history.h

@@ -82,6 +82,7 @@ public:
                                       const QDateTime& to);
 
     QList<DateMessages> getChatHistoryCounts(const ToxPk& friendPk, const QDate& from, const QDate& to);
+    QDateTime getDateWhereFindPhrase(const QString& friendPk, const QDateTime& from, QString phrase);
 
     void markAsSent(qint64 messageId);
 

src/widget/form/chatform.cpp

@@ -41,6 +41,7 @@
 #include "src/widget/tool/screenshotgrabber.h"
 #include "src/widget/translator.h"
 #include "src/widget/widget.h"
+#include "src/widget/searchform.h"
 
 #include <QClipboard>
 #include <QFileDialog>
@@ -488,6 +489,52 @@ void ChatForm::onVolMuteToggle()
     updateMuteVolButton();
 }
 
+void ChatForm::onSearchUp(const QString& phrase)
+{
+    if (phrase.isEmpty()) {
+        disableSearchText();
+    }
+
+    QVector<ChatLine::Ptr> lines = chatWidget->getLines();
+    int numLines = lines.size();
+
+    int startLine = numLines - searchPoint.x();
+
+    if (startLine == 0) {
+        QString pk = f->getPublicKey().toString();
+        QDateTime newBaseData = history->getDateWhereFindPhrase(pk, earliestMessage, phrase);
+
+        if (!newBaseData.isValid()) {
+            return;
+        }
+
+        searchAfterLoadHistory = true;
+        loadHistory(newBaseData);
+
+        return;
+    }
+
+    bool isSearch = searchInText(phrase, true);
+
+    if (!isSearch) {
+        QString pk = f->getPublicKey().toString();
+        QDateTime newBaseData = history->getDateWhereFindPhrase(pk, earliestMessage, phrase);
+
+        if (!newBaseData.isValid()) {
+            return;
+        }
+
+        searchPoint.setX(numLines);
+        searchAfterLoadHistory = true;
+        loadHistory(newBaseData);
+    }
+}
+
+void ChatForm::onSearchDown(const QString& phrase)
+{
+    searchInText(phrase, false);
+}
+
 void ChatForm::onFileSendFailed(uint32_t friendId, const QString& fname)
 {
     if (friendId != f->getId()) {
@@ -753,6 +800,10 @@ void ChatForm::loadHistory(const QDateTime& since, bool processUndelivered)
     chatWidget->insertChatlineOnTop(historyMessages);
     savedSliderPos = verticalBar->maximum() - savedSliderPos;
     verticalBar->setValue(savedSliderPos);
+
+    if (searchAfterLoadHistory && historyMessages.isEmpty()) {
+        onContinueSearch();
+    }
 }
 
 void ChatForm::onScreenshotClicked()

src/widget/form/chatform.h

@@ -72,6 +72,10 @@ public slots:
     void onAvatarChange(uint32_t friendId, const QPixmap& pic);
     void onAvatarRemoved(uint32_t friendId);
 
+protected slots:
+    void onSearchUp(const QString& phrase) override;
+    void onSearchDown(const QString& phrase) override;
+
 private slots:
     void clearChatArea(bool notInForm) override final;
     void onSendTriggered() override;

src/widget/form/genericchatform.cpp

@@ -39,6 +39,7 @@
 #include "src/widget/tool/flyoutoverlaywidget.h"
 #include "src/widget/translator.h"
 #include "src/widget/widget.h"
+#include "src/widget/searchform.h"
 
 #include <QClipboard>
 #include <QFileDialog>
@@ -135,8 +136,10 @@ GenericChatForm::GenericChatForm(QWidget* parent)
 {
     curRow = 0;
     headWidget = new ChatFormHeader();
+    searchForm = new SearchForm();
     chatWidget = new ChatLog(this);
     chatWidget->setBusyNotification(ChatMessage::createBusyNotification());
+    searchForm->hide();
 
     // settings
     const Settings& s = Settings::getInstance();
@@ -190,6 +193,7 @@ GenericChatForm::GenericChatForm(QWidget* parent)
     mainFootLayout->setSpacing(0);
 
     QVBoxLayout* contentLayout = new QVBoxLayout(contentWidget);
+    contentLayout->addWidget(searchForm);
     contentLayout->addWidget(chatWidget);
     contentLayout->addLayout(mainFootLayout);
 
@@ -198,6 +202,12 @@ GenericChatForm::GenericChatForm(QWidget* parent)
     addAction(quoteAction);
     menu.addSeparator();
 
+    searchAction = menu.addAction(QIcon(), QString(), this, SLOT(searchFormShow()),
+                                  QKeySequence(Qt::CTRL + Qt::Key_F));
+    addAction(searchAction);
+
+    menu.addSeparator();
+
     menu.addActions(chatWidget->actions());
     menu.addSeparator();
 
@@ -214,6 +224,13 @@ GenericChatForm::GenericChatForm(QWidget* parent)
     connect(chatWidget, &ChatLog::customContextMenuRequested, this,
             &GenericChatForm::onChatContextMenuRequested);
 
+    connect(searchForm, &SearchForm::searchInBegin, this, &GenericChatForm::searchInBegin);
+    connect(searchForm, &SearchForm::searchUp, this, &GenericChatForm::onSearchUp);
+    connect(searchForm, &SearchForm::searchDown, this, &GenericChatForm::onSearchDown);
+    connect(searchForm, &SearchForm::visibleChanged, this, &GenericChatForm::onSearchTriggered);
+
+    connect(chatWidget, &ChatLog::workerTimeoutFinished, this, &GenericChatForm::onContinueSearch);
+
     chatWidget->setStyleSheet(Style::getStylesheet(":/ui/chatArea/chatArea.css"));
     headWidget->setStyleSheet(Style::getStylesheet(":/ui/chatArea/chatHead.css"));
 
@@ -231,6 +248,7 @@ GenericChatForm::GenericChatForm(QWidget* parent)
 GenericChatForm::~GenericChatForm()
 {
     Translator::unregister(this);
+    delete searchForm;
 }
 
 void GenericChatForm::adjustFileMenuPosition()
@@ -296,8 +314,13 @@ bool GenericChatForm::event(QEvent* e)
     if (e->type() == QEvent::KeyRelease && !msgEdit->hasFocus()) {
         QKeyEvent* ke = static_cast<QKeyEvent*>(e);
         if ((ke->modifiers() == Qt::NoModifier || ke->modifiers() == Qt::ShiftModifier)
-            && !ke->text().isEmpty())
-            msgEdit->setFocus();
+                && !ke->text().isEmpty()) {
+            if (searchForm->isHidden()) {
+                msgEdit->setFocus();
+            } else {
+                searchForm->setFocusEditor();
+            }
+        }
     }
     return QWidget::event(e);
 }
@@ -519,6 +542,108 @@ void GenericChatForm::addSystemDateMessage()
     insertChatMessage(ChatMessage::createChatInfoMessage(dateText, ChatMessage::INFO, QDateTime()));
 }
 
+void GenericChatForm::disableSearchText()
+{
+    if (searchPoint != QPoint(1, -1)) {
+        QVector<ChatLine::Ptr> lines = chatWidget->getLines();
+        int numLines = lines.size();
+        int index = numLines - searchPoint.x();
+        if (index >= 0 && numLines > index) {
+            ChatLine::Ptr l = lines[index];
+            if (l->getColumnCount() >= 2) {
+                ChatLineContent* content = l->getContent(1);
+                Text* text = static_cast<Text*>(content);
+                text->deselectText();
+            }
+        }
+    }
+}
+
+bool GenericChatForm::searchInText(const QString& phrase, bool searchUp)
+{
+    bool isSearch = false;
+
+    if (phrase.isEmpty()) {
+        disableSearchText();
+    }
+
+    QVector<ChatLine::Ptr> lines = chatWidget->getLines();
+
+    if (lines.isEmpty()) {
+        return isSearch;
+    }
+
+    int numLines = lines.size();
+    int startLine = numLines - searchPoint.x();
+
+    if (startLine < 0 || startLine >= numLines) {
+        return isSearch;
+    }
+
+    for (int i = startLine; searchUp ? i >= 0 : i < numLines; searchUp ? --i : ++i) {
+        ChatLine::Ptr l = lines[i];
+
+        if (l->getColumnCount() < 2) {
+            continue;
+        }
+
+        ChatLineContent* content = l->getContent(1);
+        Text* text = static_cast<Text*>(content);
+
+        if (searchUp && searchPoint.y() == 0) {
+            text->deselectText();
+            searchPoint.setY(-1);
+
+            continue;
+        }
+
+        QString txt = content->getText();
+
+        if (!txt.contains(phrase, Qt::CaseInsensitive)) {
+            continue;
+        }
+
+        int index = indexForSearchInLine(txt, phrase, searchUp);
+        if ((index == -1 && searchPoint.y() > -1)) {
+            text->deselectText();
+            searchPoint.setY(-1);
+        } else {
+            chatWidget->scrollToLine(l);
+            text->deselectText();
+            text->selectText(phrase, index);
+            searchPoint = QPoint(numLines - i, index);
+            isSearch = true;
+
+            break;
+        }
+    }
+
+    return isSearch;
+}
+
+int GenericChatForm::indexForSearchInLine(const QString& txt, const QString& phrase, bool searchUp)
+{
+    int index = 0;
+
+    if (searchUp) {
+        int startIndex = -1;
+        if (searchPoint.y() > -1) {
+            startIndex = searchPoint.y() - 1;
+        }
+
+        index = txt.lastIndexOf(phrase, startIndex, Qt::CaseInsensitive);
+    } else {
+        int startIndex = 0;
+        if (searchPoint.y() > -1) {
+            startIndex = searchPoint.y() + 1;
+        }
+
+        index = txt.indexOf(phrase, startIndex, Qt::CaseInsensitive);
+    }
+
+    return index;
+}
+
 void GenericChatForm::clearChatArea()
 {
     clearChatArea(true);
@@ -662,6 +787,43 @@ void GenericChatForm::copyLink()
     QApplication::clipboard()->setText(linkText);
 }
 
+void GenericChatForm::searchFormShow()
+{
+    if (searchForm->isHidden()) {
+        searchForm->show();
+        searchForm->setFocusEditor();
+    }
+}
+
+void GenericChatForm::onSearchTriggered()
+{
+    if (searchForm->isHidden()) {
+        searchForm->removeSearchPhrase();
+
+        disableSearchText();
+    } else {
+        searchPoint = QPoint(1, -1);
+        searchAfterLoadHistory = false;
+    }
+}
+
+void GenericChatForm::searchInBegin(const QString& phrase)
+{
+    disableSearchText();
+
+    searchPoint = QPoint(1, -1);
+    onSearchUp(phrase);
+}
+
+void GenericChatForm::onContinueSearch()
+{
+    QString phrase = searchForm->getSearchPhrase();
+    if (!phrase.isEmpty() && searchAfterLoadHistory) {
+        searchAfterLoadHistory = false;
+        onSearchUp(phrase);
+    }
+}
+
 void GenericChatForm::retranslateUi()
 {
     sendButton->setToolTip(tr("Send message"));
@@ -672,6 +834,7 @@ void GenericChatForm::retranslateUi()
     clearAction->setText(tr("Clear displayed messages"));
     quoteAction->setText(tr("Quote selected text"));
     copyLinkAction->setText(tr("Copy link address"));
+    searchAction->setText(tr("Search in text"));
 }
 
 void GenericChatForm::showNetcam()

src/widget/form/genericchatform.h

@@ -40,6 +40,7 @@ class CroppingLabel;
 class FlyoutOverlayWidget;
 class GenericNetCamView;
 class MaskablePixmapWidget;
+class SearchForm;
 class Widget;
 
 class QLabel;
@@ -102,6 +103,13 @@ protected slots:
     void onSplitterMoved(int pos, int index);
     void quoteSelectedText();
     void copyLink();
+    void searchFormShow();
+    void onSearchTriggered();
+
+    void searchInBegin(const QString& phrase);
+    virtual void onSearchUp(const QString& phrase) = 0;
+    virtual void onSearchDown(const QString& phrase) = 0;
+    void onContinueSearch();
 
 private:
     void retranslateUi();
@@ -123,6 +131,9 @@ protected:
     virtual bool event(QEvent*) final override;
     virtual void resizeEvent(QResizeEvent* event) final override;
     virtual bool eventFilter(QObject* object, QEvent* event) final override;
+    void disableSearchText();
+    bool searchInText(const QString& phrase, bool searchUp);
+    int indexForSearchInLine(const QString& txt, const QString& phrase, bool searchUp);
 
 protected:
     bool audioInputFlag;
@@ -133,6 +144,7 @@ protected:
     QAction* clearAction;
     QAction* quoteAction;
     QAction* copyLinkAction;
+    QAction* searchAction;
 
     ToxPk previousId;
 
@@ -151,11 +163,15 @@ protected:
 
     ChatFormHeader* headWidget;
 
+    SearchForm *searchForm;
     ChatLog* chatWidget;
     ChatTextEdit* msgEdit;
     FlyoutOverlayWidget* fileFlyout;
     GenericNetCamView* netcam;
     Widget* parent;
+
+    QPoint searchPoint;
+    bool searchAfterLoadHistory;
 };
 
 #endif // GENERICCHATFORM_H

src/widget/form/groupchatform.cpp

@@ -22,6 +22,8 @@
 #include "tabcompleter.h"
 #include "src/core/core.h"
 #include "src/core/coreav.h"
+#include "src/chatlog/chatlog.h"
+#include "src/chatlog/content/text.h"
 #include "src/model/friend.h"
 #include "src/friendlist.h"
 #include "src/model/group.h"
@@ -189,6 +191,16 @@ void GroupChatForm::onTitleChanged(uint32_t groupId, const QString& author, cons
     addSystemInfoMessage(message, ChatMessage::INFO, curTime);
 }
 
+void GroupChatForm::onSearchUp(const QString& phrase)
+{
+    searchInText(phrase, true);
+}
+
+void GroupChatForm::onSearchDown(const QString& phrase)
+{
+    searchInText(phrase, false);
+}
+
 void GroupChatForm::onScreenshotClicked()
 {
     // Unsupported

src/widget/form/groupchatform.h

@@ -49,6 +49,8 @@ private slots:
     void onCallClicked();
     void onUserListChanged();
     void onTitleChanged(uint32_t groupId, const QString& author, const QString& title);
+    void onSearchUp(const QString& phrase)  override;
+    void onSearchDown(const QString& phrase)  override;
 
 protected:
     virtual GenericNetCamView* createNetcam() final override;

src/widget/searchform.cpp

@@ -0,0 +1,128 @@
+/*
+    Copyright © 2015-2016 by The qTox Project Contributors
+
+    This file is part of qTox, a Qt-based graphical interface for Tox.
+
+    qTox is libre software: you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    qTox is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with qTox.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#include "searchform.h"
+#include "src/widget/style.h"
+#include <QHBoxLayout>
+#include <QPushButton>
+#include <QKeyEvent>
+
+SearchForm::SearchForm(QWidget* parent) : QWidget(parent)
+{
+    QHBoxLayout *layout = new QHBoxLayout();
+    searchLine = new LineEdit();
+
+    upButton = createButton("searchUpButton", "green");
+    downButton = createButton("searchDownButton", "green");
+    hideButton = createButton("searchHideButton", "red");
+
+    layout->setMargin(0);
+    layout->addWidget(searchLine);
+    layout->addWidget(upButton);
+    layout->addWidget(downButton);
+    layout->addWidget(hideButton);
+
+    setLayout(layout);
+
+    connect(searchLine, &LineEdit::textChanged, this, &SearchForm::changedSearchPhrase);
+    connect(searchLine, &LineEdit::clickEnter, this, &SearchForm::clickedUp);
+    connect(searchLine, &LineEdit::clickShiftEnter, this, &SearchForm::clickedDown);
+    connect(searchLine, &LineEdit::clickEsc, this, &SearchForm::clickedHide);
+
+    connect(upButton, &QPushButton::clicked, this, &SearchForm::clickedUp);
+    connect(downButton, &QPushButton::clicked, this, &SearchForm::clickedDown);
+    connect(hideButton, &QPushButton::clicked, this, &SearchForm::clickedHide);
+}
+
+void SearchForm::removeSearchPhrase()
+{
+    searchLine->setText("");
+}
+
+QString SearchForm::getSearchPhrase() const
+{
+    return searchPhrase;
+}
+
+void SearchForm::setFocusEditor()
+{
+    searchLine->setFocus();
+}
+
+void SearchForm::showEvent(QShowEvent* event)
+{
+    QWidget::showEvent(event);
+    emit visibleChanged();
+}
+
+QPushButton *SearchForm::createButton(const QString& name, const QString& state)
+{
+    QPushButton* btn = new QPushButton();
+    btn->setAttribute(Qt::WA_LayoutUsesWidgetRect);
+    btn->setObjectName(name);
+    btn->setProperty("state", state);
+    btn->setStyleSheet(Style::getStylesheet(QStringLiteral(":/ui/chatForm/buttons.css")));
+
+    return btn;
+}
+
+void SearchForm::changedSearchPhrase(const QString& text)
+{
+    searchPhrase = text;
+    emit searchInBegin(searchPhrase);
+}
+
+void SearchForm::clickedUp()
+{
+    emit searchUp(searchPhrase);
+}
+
+void SearchForm::clickedDown()
+{
+    emit searchDown(searchPhrase);
+}
+
+void SearchForm::clickedHide()
+{
+    hide();
+    emit visibleChanged();
+}
+
+LineEdit::LineEdit(QWidget* parent) : QLineEdit(parent)
+{
+}
+
+void LineEdit::keyPressEvent(QKeyEvent* event)
+{
+    int key = event->key();
+
+    if ((key == Qt::Key_Enter || key == Qt::Key_Return)) {
+        if ((event->modifiers() & Qt::ShiftModifier)) {
+            emit clickShiftEnter();
+        } else {
+            emit clickEnter();
+        }
+    } else if (key == Qt::Key_Escape) {
+        emit clickEsc();
+    }
+
+    QLineEdit::keyPressEvent(event);
+}
+
+

src/widget/searchform.h

@@ -0,0 +1,81 @@
+/*
+    Copyright © 2015-2016 by The qTox Project Contributors
+
+    This file is part of qTox, a Qt-based graphical interface for Tox.
+
+    qTox is libre software: you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    qTox is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with qTox.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#ifndef SEARCHFORM_H
+#define SEARCHFORM_H
+
+#include <QWidget>
+#include <QLineEdit>
+
+class QPushButton;
+class LineEdit;
+
+class SearchForm final : public QWidget
+{
+    Q_OBJECT
+public:
+    explicit SearchForm(QWidget* parent = nullptr);
+    void removeSearchPhrase();
+    QString getSearchPhrase() const;
+    void setFocusEditor();
+
+protected:
+    virtual void showEvent(QShowEvent* event) final override;
+
+private:
+    // TODO: Merge with 'createButton' from chatformheader.cpp
+    QPushButton* createButton(const QString& name, const QString& state);
+
+    QPushButton* upButton;
+    QPushButton* downButton;
+    QPushButton* hideButton;
+    LineEdit* searchLine;
+
+    QString searchPhrase;
+
+private slots:
+    void changedSearchPhrase(const QString& text);
+    void clickedUp();
+    void clickedDown();
+    void clickedHide();
+
+signals:
+    void searchInBegin(const QString& phrase);
+    void searchUp(const QString& phrase);
+    void searchDown(const QString& phrase);
+    void visibleChanged();
+};
+
+class LineEdit : public QLineEdit
+{
+    Q_OBJECT
+
+public:
+    LineEdit(QWidget* parent = nullptr);
+
+protected:
+    virtual void keyPressEvent(QKeyEvent* event) final override;
+
+signals:
+    void clickEnter();
+    void clickShiftEnter();
+    void clickEsc();
+};
+
+#endif // SEARCHFORM_H

ui/chatForm/buttons.css

@@ -67,6 +67,33 @@ QAbstractButton#callButton
     height: 40px;
 }
 
+/* SearchLine */
+
+QAbstractButton#searchHideButton
+{
+    background-image: url(":/ui/chatForm/searchHideButton.svg");
+    border-radius: 5px;
+    width: 35px;
+    height: 35px;
+}
+
+
+QAbstractButton#searchUpButton
+{
+    background-image: url(":/ui/chatForm/searchUpButton.svg");
+    border-radius: 5px;
+    width: 35px;
+    height: 35px;
+}
+
+QAbstractButton#searchDownButton
+{
+    background-image: url(":/ui/chatForm/searchDownButton.svg");
+    border-radius: 5px;
+    width: 35px;
+    height: 35px;
+}
+
 /* Common */
 
 QAbstractButton

ui/chatForm/searchDownButton.svg

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+
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+  </g>
+</svg>

ui/chatForm/searchHideButton.svg

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+<!-- Created with Inkscape (http://www.inkscape.org/) -->
+
+<svg
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+   xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
+   xmlns:svg="http://www.w3.org/2000/svg"
+   xmlns="http://www.w3.org/2000/svg"
+   xmlns:sodipodi="http://sodipodi.sourceforge.net/DTD/sodipodi-0.dtd"
+   xmlns:inkscape="http://www.inkscape.org/namespaces/inkscape"
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+   height="5.5071211mm"
+   viewBox="0 0 5.5071209 5.5071212"
+   version="1.1"
+   id="svg8"
+   inkscape:version="0.92.2 5c3e80d, 2017-08-06"
+   sodipodi:docname="hideButton.svg">
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+     id="defs2" />
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+     id="base"
+     pagecolor="#ffffff"
+     bordercolor="#666666"
+     borderopacity="1.0"
+     inkscape:pageopacity="0.0"
+     inkscape:pageshadow="2"
+     inkscape:zoom="2.8"
+     inkscape:cx="186.40227"
+     inkscape:cy="-38.76831"
+     inkscape:document-units="mm"
+     inkscape:current-layer="layer1"
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+     fit-margin-top="0"
+     fit-margin-left="0"
+     fit-margin-right="0"
+     fit-margin-bottom="0"
+     inkscape:window-width="1920"
+     inkscape:window-height="1015"
+     inkscape:window-x="0"
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+        <dc:type
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ui/chatForm/searchUpButton.svg

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+<!-- Created with Inkscape (http://www.inkscape.org/) -->
+
+<svg
+   xmlns:dc="http://purl.org/dc/elements/1.1/"
+   xmlns:cc="http://creativecommons.org/ns#"
+   xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
+   xmlns:svg="http://www.w3.org/2000/svg"
+   xmlns="http://www.w3.org/2000/svg"
+   xmlns:sodipodi="http://sodipodi.sourceforge.net/DTD/sodipodi-0.dtd"
+   xmlns:inkscape="http://www.inkscape.org/namespaces/inkscape"
+   width="7.0183306mm"
+   height="4.1245208mm"
+   viewBox="0 0 7.0183304 4.1245209"
+   version="1.1"
+   id="svg8"
+   inkscape:version="0.92.2 5c3e80d, 2017-08-06"
+   sodipodi:docname="searchUpButton.svg">
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+     id="defs2" />
+  <sodipodi:namedview
+     id="base"
+     pagecolor="#ffffff"
+     bordercolor="#666666"
+     borderopacity="1.0"
+     inkscape:pageopacity="0.0"
+     inkscape:pageshadow="2"
+     inkscape:zoom="2.8"
+     inkscape:cx="185.76311"
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+     inkscape:document-units="mm"
+     inkscape:current-layer="layer1"
+     showgrid="false"
+     fit-margin-top="0"
+     fit-margin-left="0"
+     fit-margin-right="0"
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+     inkscape:window-width="1920"
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+     inkscape:window-x="0"
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+         rdf:about="">
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+</svg>