Украшательства интерфейса - Реакция на нажатие кнопки в панели инструментов теперь зависит от контекста

lib/files.tcl

@@ -167,12 +167,27 @@ namespace eval FileOper {
                     Close
                 }
             }
-            $tree delete $treeItem
-        }
-        set activeProject ""
+            set nextProj [$tree next $treeItem]
+            # puts $nextProj
+            set prevProj [$tree prev $treeItem]
+            # puts $prevProj
+            if {$nextProj ne ""} {
+                set activeProject [$tree item $nextProj -values]
+                puts $activeProject
+            } elseif {$prevProj ne ""} {
+                set activeProject [$tree item $prevProj -values]
+                puts $activeProject
+            } else {
+                unset activeProject
                 .frmStatus.lblGitLogo configure -image pixel
                 .frmStatus.lblGit configure -text ""
             }
+            $tree delete $treeItem
+            unset nextProj
+            unset prevProj
+        }
+
+    }
 
     proc CloseAll {} {
         global nbEditor modified

lib/gui.tcl

@@ -135,7 +135,7 @@ grid .frmBody.panel -row 0 -column 1 -sticky nesw
 grid columnconfigure .frmBody .frmBody.panel -weight 1
 grid rowconfigure .frmBody .frmBody.panel -weight 1
 
-ttk::button $frmTool.btn_tree  -command  "ViewFilesTree true" -image tree_24x24
+ttk::button $frmTool.btn_tree  -command ToolBtnTreePress -image tree_24x24
 ttk::button $frmTool.btn_search  -command FileOper::FindInFiles -image search_24x24
 ttk::button $frmTool.btn_git -command Git::Dialog -image git_24x24
 

lib/procedure.tcl

@@ -112,6 +112,68 @@ proc ViewHelper {helper} {
         set cfgVariables($helper) true
     }
 }
+proc WelcomeDialog {} {
+    set win .welcome
+    set x [winfo rootx .frmWork]
+    set y [winfo rooty .frmWork]
+
+    if { [winfo exists $win] } {
+        destroy $win
+        return
+    }
+    toplevel $win
+    wm transient $win .
+    wm overrideredirect $win 1
+    
+    ttk::button $win.btnOpenFolder -text [::msgcat::mc "Open folder"] -command {
+        destroy .welcome
+        set folderPath [FileOper::OpenFolderDialog]
+        if {$folderPath != ""} {
+            set activeProject $folderPath
+            FileOper::ReadFolder $folderPath
+            ReadFilesFromDirectory $folderPath $folderPath
+        }
+    }
+    ttk::button $win.btnOpenFile -text [::msgcat::mc "Open file"] -command {
+        destroy .welcome
+        set filePath [FileOper::OpenDialog]
+        if {$filePath != ""} {
+            FileOper::Edit $filePath
+        }
+    }
+    ttk::button $win.btnNewFile -compound center -text [::msgcat::mc "New file"] \
+        -command {
+            destroy .welcome
+            Editor::New
+        }
+    
+    pack $win.btnOpenFolder -expand true -fill x -side top -padx 3 -pady 3
+    pack $win.btnOpenFile -expand true -fill x -side top -padx 3 -pady 3
+    pack $win.btnNewFile -expand true -fill x -side top -padx 3 -pady 3
+
+    bind $win <Escape> "destroy $win"
+    # Определям расстояние до края экрана (основного окна) и если
+    # оно меньше размера окна со списком то сдвигаем его вверх
+    set winGeom [winfo reqheight $win]
+    set topHeight [winfo height .]
+    # puts "$x, $y, $winGeom, $topHeight"
+    if [expr [expr $topHeight - $y] < $winGeom] {
+        set y [expr $topHeight - $winGeom]
+    }
+    wm geom $win +$x+$y
+    focus $win.btnOpenFolder
+}    
+
+proc ToolBtnTreePress {} {
+    global cfgVariables activeProject
+    if [info exists activeProject] {
+        if {$activeProject ne ""} {
+            ViewFilesTree true
+        }
+    } else {
+        WelcomeDialog
+    }
+}
 
 proc Del {} {
     return