Merge pull request #498 from wassup05/page-up-down

feat: add keys PageUp and PageDown for better navigation

src/internal/config_type.go

@@ -153,6 +153,8 @@ type HotkeysType struct {
 	// movement
 	ListUp   []string `toml:"list_up" comment:"movement"`
 	ListDown []string `toml:"list_down"`
+	PageUp   []string `toml:"page_up"`
+	PageDown []string `toml:"page_down"`
 
 	CloseFilePanel         []string `toml:"close_file_panel" comment:"file panel control"`
 	CreateNewFilePanel     []string `toml:"create_new_file_panel"`

src/internal/handle_panel_movement.go

@@ -279,6 +279,60 @@ func (m *model) controlFilePanelListDown(wheel bool) {
 
 }
 
+func (m *model) controlFilePanelPgUp(){
+  panel := m.fileModel.filePanels[m.filePanelFocusIndex]
+  panlen := len(panel.element)
+  panHeight := panelElementHeight(m.mainPanelHeight)
+  panCenter := panHeight / 2     // For making sure the cursor is at the center of the panel
+
+  if panlen == 0 {
+    return
+  }
+
+  if panHeight >= panlen {
+    panel.cursor = 0
+  } else {
+    if panel.cursor - panHeight <= 0 {
+      panel.cursor = 0
+      panel.render = 0
+    } else {
+      panel.cursor -= panHeight
+      panel.render = panel.cursor - panCenter
+
+      if panel.render < 0 {
+        panel.render = 0
+      }
+    }
+  }
+
+	m.fileModel.filePanels[m.filePanelFocusIndex] = panel
+}
+
+func (m *model) controlFilePanelPgDown(){
+  panel := m.fileModel.filePanels[m.filePanelFocusIndex]
+  panlen := len(panel.element)
+  panHeight := panelElementHeight(m.mainPanelHeight)
+  panCenter := panHeight / 2     // For making sure the cursor is at the center of the panel
+
+  if panlen == 0 {
+    return
+  }
+
+  if panHeight >= panlen {
+    panel.cursor = panlen - 1
+  } else {
+    if panel.cursor + panHeight >= panlen {
+      panel.cursor = panlen - 1
+      panel.render = panel.cursor - panCenter
+    } else {
+      panel.cursor += panHeight
+      panel.render = panel.cursor - panCenter
+    }
+  }
+
+	m.fileModel.filePanels[m.filePanelFocusIndex] = panel
+}
+
 // Handles the action of selecting an item in the file panel upwards. (only work on select mode)
 func (m *model) itemSelectUp(wheel bool) {
 	runTime := 1

src/internal/key_function.go

@@ -49,6 +49,12 @@ func (m *model) mainKey(msg string, cmd tea.Cmd) ( tea.Cmd) {
 			}()
 		}
 
+  case containsKey(msg, hotkeys.PageUp):
+    m.controlFilePanelPgUp()
+
+  case containsKey(msg, hotkeys.PageDown):
+    m.controlFilePanelPgDown()
+
 	case containsKey(msg, hotkeys.ChangePanelMode):
 		m.changeFilePanelMode()
 

src/superfile_config/hotkeys.toml

@@ -5,6 +5,8 @@ quit = ['q', 'esc']
 # movement
 list_up = ['up', 'k']
 list_down = ['down', 'j']
+page_up = ['pgup','']
+page_down = ['pgdown','']
 # file panel control
 create_new_file_panel = ['n', '']
 close_file_panel = ['w', '']

src/superfile_config/vimHotkeys.toml

@@ -7,6 +7,8 @@ quit = ['ctrl+c', ''] # also know as, theprimeagen troller
 # movement
 list_up = ['k', '']
 list_down = ['j', '']
+page_up = ['pgup','']
+page_down = ['pgdown','']
 # file panel control
 create_new_file_panel = ['n', '']
 close_file_panel = ['q', '']
@@ -53,4 +55,4 @@ search_bar = ['/', '']
 # Select mode hotkeys (can conflict with other modes, cannot conflict with global hotkeys)
 file_panel_select_mode_items_select_down = ['J', '']
 file_panel_select_mode_items_select_up = ['K', '']
-file_panel_select_all_items = ['A', '']
+file_panel_select_all_items = ['A', '']