From e0c049eb429e54aff555a49a8aa2be3f39ab2f5f Mon Sep 17 00:00:00 2001
From: Sobottasgithub <Sobotta2008@outlook.de>
Date: Sun, 4 Feb 2024 23:10:41 +0100
Subject: [PATCH] [MLV] Add switching to first/last widget in viewport

---
 src/LogViewer/ui/main_window.py | 30 ++++++++++++++++++++++++++++++
 src/LogViewer/ui/main_window.ui | 18 ++++++++++++++++++
 2 files changed, 48 insertions(+)

diff --git a/src/LogViewer/ui/main_window.py b/src/LogViewer/ui/main_window.py
index 7351c7c..c7e94d6 100644
--- a/src/LogViewer/ui/main_window.py
+++ b/src/LogViewer/ui/main_window.py
@@ -61,6 +61,8 @@ def __init__(self):
         self.uiAction_goToRow.triggered.connect(self.openGoToRowWidget)
         self.uiAction_firstRow.triggered.connect(self.goToFirstRow)
         self.uiAction_lastRow.triggered.connect(self.goToLastRow)
+        self.uiAction_firstRowInViewport.triggered.connect(self.goToFirstRowInViewport)
+        self.uiAction_lastRowInViewport.triggered.connect(self.goToLastRowInViewport)
 
         self.uiWidget_listView.doubleClicked.connect(self.inspectLine)
         self.uiWidget_listView.clicked.connect(self.listViewClicked)
@@ -124,6 +126,8 @@ def toggleUiItems(self):
         self.uiSpinBox_goToRow.setEnabled(self.file != None)
         self.uiCombobox_searchInput.setEnabled(self.file != None)
         self.uiCombobox_filterInput.setEnabled(self.file != None)
+        self.uiAction_lastRowInViewport.setEnabled(self.file != None)
+        self.uiAction_firstRowInViewport.setEnabled(self.file != None)
 
     def export(self):
         if self.rawlog:
@@ -628,6 +632,32 @@ def goToLastRow(self, *args):
             self.uiWidget_listView.setCurrentRow(index)
             self.statusbar.showDynamicText(str("Done ✓ | Switched to last row: %d" % index))
             break
+
+    @catch_exceptions(logger=logger)
+    def goToFirstRowInViewport(self, *args):
+        lastIndex = self.uiWidget_listView.selectedIndexes()[0].row()
+        # Counts backwards from the current entry
+        for index in range(self.uiWidget_listView.selectedIndexes()[0].row(), -1, -1):
+            # The entry height is added to the Y position of the entry to see if that line is still in the viewport
+            if self.uiWidget_listView.visualItemRect(self.rawlog[index]["uiItem"]).height() + self.uiWidget_listView.visualItemRect(self.rawlog[index]["uiItem"]).y() < 0:
+                self.uiWidget_listView.setCurrentRow(lastIndex)
+                self.statusbar.showDynamicText(str("Done ✓ | Switched to the first line in the viewport: %d" % lastIndex))
+                break
+            else:
+                lastIndex = index
+
+    @catch_exceptions(logger=logger)
+    def goToLastRowInViewport(self, *args):
+        lastIndex = self.uiWidget_listView.selectedIndexes()[0].row()
+        # Counts upwards from the current entry
+        for index in range(self.uiWidget_listView.selectedIndexes()[0].row(), 32):
+            # If the item position is larger than the listview-height, it must be the last one in our viewport
+            if self.uiWidget_listView.visualItemRect(self.rawlog[index]["uiItem"]).y() > self.uiWidget_listView.height():
+                self.uiWidget_listView.setCurrentRow(lastIndex)
+                self.statusbar.showDynamicText(str("Done ✓ | Switched to the last line in the viewport: %d" % lastIndex))
+                break
+            else:
+                lastIndex = index
     
     def cancelFilter(self):
         for index in range(len(self.rawlog)):
diff --git a/src/LogViewer/ui/main_window.ui b/src/LogViewer/ui/main_window.ui
index b84b14a..5cda4c3 100755
--- a/src/LogViewer/ui/main_window.ui
+++ b/src/LogViewer/ui/main_window.ui
@@ -277,6 +277,8 @@
     <addaction name="uiAction_goToRow"/>
     <addaction name="uiAction_firstRow"/>
     <addaction name="uiAction_lastRow"/>
+    <addaction name="uiAction_firstRowInViewport"/>
+    <addaction name="uiAction_lastRowInViewport"/>
    </widget>
    <widget class="QMenu" name="menuHelp">
     <property name="title">
@@ -437,6 +439,22 @@
     <string>Ctrl+End</string>
    </property>
   </action>
+  <action name="uiAction_firstRowInViewport">
+   <property name="text">
+    <string>First row in viewport</string>
+   </property>
+   <property name="shortcut">
+    <string>Home</string>
+   </property>
+  </action>
+  <action name="uiAction_lastRowInViewport">
+   <property name="text">
+    <string>Last row in viewport</string>
+   </property>
+   <property name="shortcut">
+    <string>End</string>
+   </property>
+  </action>
  </widget>
  <resources/>
  <connections/>