revert(chatlog): "edit function "Load chat history""

This reverts commit 6de1173c17.

src/widget/form/genericchatform.cpp

@@ -822,22 +822,12 @@ void GenericChatForm::onLoadHistory()
 {
     LoadHistoryDialog dlg(&chatLog);
     if (dlg.exec()) {
+        QDateTime time = dlg.getFromDate();
+        auto idx = firstItemAfterDate(dlg.getFromDate().date(), chatLog);
+        auto end = ChatLogIdx(idx.get() + 100);
         chatWidget->clear();
         messages.clear();
-
-        QDateTime time = dlg.getFromDate();
-        auto type = dlg.getLoadType();
-
-        auto begin = firstItemAfterDate(dlg.getFromDate().date(), chatLog);
-        auto end = ChatLogIdx(begin.get() + 1);
-
-        renderMessages(begin, end);
-
-        if (type == LoadHistoryDialog::from) {
-            loadHistoryUpper();
-        } else {
-            loadHistoryLower();
-        }
+        renderMessages(idx, end);
     }
 }
 
@@ -1044,13 +1034,15 @@ void GenericChatForm::renderMessages(ChatLogIdx begin, ChatLogIdx end,
 
 void GenericChatForm::loadHistoryLower()
 {
-    auto end = messages.begin()->first;
-    auto begin = ChatLogIdx(0);
-    if (end.get() > 100) {
-        begin = ChatLogIdx(end.get() - 100);
+    auto begin = messages.begin()->first;
+
+    if (begin.get() > 100) {
+        begin = ChatLogIdx(begin.get() - 100);
+    } else {
+        begin = ChatLogIdx(0);
     }
 
-    renderMessages(begin, end);
+    renderMessages(begin, chatLog.getNextIdx());
 }
 
 void GenericChatForm::loadHistoryUpper()

src/widget/form/loadhistorydialog.cpp

@@ -66,15 +66,6 @@ QDateTime LoadHistoryDialog::getFromDate()
     return res;
 }
 
-LoadHistoryDialog::LoadType LoadHistoryDialog::getLoadType()
-{
-    if (ui->loadTypeComboBox->currentIndex() == 0) {
-        return LoadType::from;
-    }
-
-    return LoadType::to;
-}
-
 void LoadHistoryDialog::setTitle(const QString& title)
 {
     setWindowTitle(title);

src/widget/form/loadhistorydialog.h

@@ -33,17 +33,11 @@ class LoadHistoryDialog : public QDialog
     Q_OBJECT
 
 public:
-    enum LoadType {
-        from,
-        to
-    };
-
     explicit LoadHistoryDialog(const IChatLog* chatLog, QWidget* parent = nullptr);
     explicit LoadHistoryDialog(QWidget* parent = nullptr);
     ~LoadHistoryDialog();
 
     QDateTime getFromDate();
-    LoadType getLoadType();
     void setTitle(const QString& title);
     void setInfoLabel(const QString& info);
 

src/widget/form/loadhistorydialog.ui

@@ -6,8 +6,8 @@
    <rect>
     <x>0</x>
     <y>0</y>
-    <width>410</width>
-    <height>332</height>
+    <width>347</width>
+    <height>264</height>
    </rect>
   </property>
   <property name="windowTitle">
@@ -16,60 +16,22 @@
   <property name="modal">
    <bool>true</bool>
   </property>
-  <layout class="QFormLayout" name="formLayout">
-   <item row="0" column="0">
-    <layout class="QHBoxLayout" name="horizontalLayout">
-     <item>
-      <widget class="QLabel" name="fromLabel">
-       <property name="text">
-        <string>Load history</string>
-       </property>
-      </widget>
-     </item>
-     <item>
-      <widget class="QComboBox" name="loadTypeComboBox">
-       <item>
-        <property name="text">
-         <string>from</string>
-        </property>
-       </item>
-       <item>
-        <property name="text">
-         <string>to</string>
-        </property>
-       </item>
-      </widget>
-     </item>
-     <item>
-      <widget class="QLabel" name="label">
-       <property name="text">
-        <string>(about 100 messages are loaded)</string>
-       </property>
-      </widget>
-     </item>
-     <item>
-      <spacer name="horizontalSpacer">
-       <property name="orientation">
-        <enum>Qt::Horizontal</enum>
-       </property>
-       <property name="sizeHint" stdset="0">
-        <size>
-         <width>17</width>
-         <height>20</height>
-        </size>
-       </property>
-      </spacer>
-     </item>
-    </layout>
+  <layout class="QVBoxLayout" name="verticalLayout_3">
+   <item>
+    <widget class="QLabel" name="fromLabel">
+     <property name="text">
+      <string>Load history from:</string>
+     </property>
+    </widget>
    </item>
-   <item row="1" column="0">
+   <item>
     <widget class="QCalendarWidget" name="fromDate">
      <property name="gridVisible">
       <bool>false</bool>
      </property>
     </widget>
    </item>
-   <item row="2" column="0">
+   <item>
     <widget class="QDialogButtonBox" name="buttonBox">
      <property name="orientation">
       <enum>Qt::Horizontal</enum>