write shit

UI/TASViewer.cs

@@ -10,30 +10,35 @@ using System.Windows;
 
 namespace BallanceTASEditor.UI {
     public class TASViewer : IDisposable {
-        public TASViewer(TASFile file, Slider slider, TASFlow datagrid) {
+        public TASViewer(TASFile file, Slider slider, TASFlow datagrid, TextBlock statusbar) {
             mFile = file;
             mSlider = slider;
             mDataGrid = datagrid;
+            mStatusbar = statusbar;
 
             // restore slider
             mSlider.Minimum = 0;
             updateSliderRange();
 
+            // init selection
+            mSelectionHelp = new SelectionHelp();
+            mSelectionHelp.SelectionChanged += funcSelectionHelp_SelectionChanged;
+
             // init data
             mPosition = 0;
-            mDataSource = new List<FrameDataDisplay>();
             INVALID_FRAME_DATA = new FrameData(-1f, 0);
-            for (int i = 0; i < DATA_LIST_LENGTH; i++) {
-                mDataSource.Add(new FrameDataDisplay(0, INVALID_FRAME_DATA));
-            }
-            mFile.Get(mDataSource, 0, DATA_LIST_LENGTH);
+            mDataSource = new List<FrameDataDisplay>();
+            mListLength = 0;
 
             // bind event and source
-            mDataGrid.SetItemCount(DATA_LIST_LENGTH);
             mDataGrid.DataSources = mDataSource;
-            mDataGrid.RefreshDataSources();
+            mDataGrid.SelectionHelp = mSelectionHelp;
             mSlider.ValueChanged += sliderValueChanged;
+
+            // display data
+            ChangeListLength(DATA_LIST_LENGTH);
         }
+
         public void Dispose() {
             mDataGrid.DataSources = null;
             mSlider.ValueChanged -= sliderValueChanged;
@@ -43,18 +48,20 @@ namespace BallanceTASEditor.UI {
         FrameData INVALID_FRAME_DATA;
         TASFile mFile;
         Slider mSlider;
+        TextBlock mStatusbar;
         TASFlow mDataGrid;
+        SelectionHelp mSelectionHelp;
         long mPosition;
+        int mListLength;
         List<FrameDataDisplay> mDataSource;
 
         private void sliderValueChanged(object sender, RoutedPropertyChangedEventArgs<double> e) {
             long pos = Convert.ToInt64(Math.Floor(e.NewValue));
             long offset = pos - mPosition;
             mFile.Shift(offset);
-            mFile.Get(mDataSource, pos, DATA_LIST_LENGTH);
 
+            RefreshDisplay(pos);
             mPosition = pos;
-            mDataGrid.RefreshDataSources();
         }
 
         private void updateSliderRange() {
@@ -63,5 +70,76 @@ namespace BallanceTASEditor.UI {
                 mSlider.Value = newSize;
             mSlider.Maximum = newSize;
         }
+
+        private void funcSelectionHelp_SelectionChanged() {
+            mDataGrid.RefreshDataMenu();
+            mDataGrid.RefreshSelectionHighlight();
+            OnStatusbarSelectionChanged();
+        }
+
+        private void OnStatusbarSelectionChanged() {
+            var mode = mSelectionHelp.GetToolMode();
+
+            switch (mode) {
+                case ToolMode.Cursor:
+                    if (mSelectionHelp.IsDataReady()) {
+                        var data = mSelectionHelp.GetRange();
+                        mStatusbar.Text = $"{data.start} - {data.end}";
+                    } else if (mSelectionHelp.IsDataPartialReady()) {
+                        var data2 = mSelectionHelp.GetPoint();
+                        mStatusbar.Text = data2.ToString();
+                    } else mStatusbar.Text = "-";
+                    break;
+                case ToolMode.Fill:
+                    if (mSelectionHelp.IsDataReady()) {
+                        var data3 = mSelectionHelp.GetRange();
+                        mStatusbar.Text = $"{data3.start} - {data3.end}";
+                    } else mStatusbar.Text = "-";
+                    break;
+                case ToolMode.Overwrite:
+                    if (mSelectionHelp.IsDataReady()) {
+                        var data4 = mSelectionHelp.GetPoint();
+                        mStatusbar.Text = data4.ToString();
+                    } else mStatusbar.Text = "-";
+                    break;
+            }
+        }
+
+        public void ChangeListLength(int newLen) {
+            if (newLen < 5 || newLen > 30) return;
+            int offset = newLen - mListLength;
+            int abs = Math.Abs(offset);
+            if (offset == 0) return;
+
+            // change mDataSource first
+
+            if (offset > 0) {
+                for (int i = 0; i < abs; i++) {
+                    mDataSource.Add(new FrameDataDisplay(0, INVALID_FRAME_DATA));
+                }
+            } else {
+                mDataSource.RemoveRange(newLen, abs);
+            }
+
+            // then change viewer control
+            mDataGrid.SetItemCount(newLen);
+
+            // apply new value
+            mListLength = newLen;
+
+            // then refresh
+            RefreshDisplay(mPosition);
+        }
+
+        public void RefreshDisplay(long pos) {
+            mFile.Get(mDataSource, pos, mListLength);
+            mDataGrid.RefreshDataSources();
+            mDataGrid.RefreshSelectionHighlight();
+        }
+    
+        public void ChangeToolMode(ToolMode mode) {
+            mSelectionHelp.SetMode(mode);
+        }
+
     }
 }