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Fix System.ArgumentOutOfRangeException while get-tab #704

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Merged
lzybkr merged 8 commits into from
Aug 21, 2018
Merged

Fix System.ArgumentOutOfRangeException while get-tab #704

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5d11156
Fix System.ArgumentOutOfRangeException while get-tab
jianyunt Jun 6, 2018
6aedc7d
Merge branch 'master' into tabissue
jianyunt Jul 27, 2018
c08e171
Updated
jianyunt Jul 31, 2018
3c72b87
Disabled tooltips if it won't fix into the the screen
jianyunt Aug 16, 2018
a395af3
Merge branch 'master' of https://github.com/lzybkr/PSReadLine into ta…
jianyunt Aug 16, 2018
33b2ba6
Fixed potential the last line gets overwritten
jianyunt Aug 17, 2018
2f57fe5
Address CR
jianyunt Aug 20, 2018
88976f0
Fixed an issue when console is reduced to oneline height.
jianyunt Aug 21, 2018
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51 changes: 35 additions & 16 deletions PSReadLine/Completion.cs
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Original file line number Diff line number Diff line change
Expand Up @@ -483,17 +483,25 @@ void EnsureMenuAndInputIsVisible(IConsole console, int tooltipLineCount)
}
}

public void DrawMenu(Menu previousMenu)
public void DrawMenu(Menu previousMenu, bool menuSelect)
{
IConsole console = Singleton._console;

// Move cursor to the start of the first line after our input.
this.Top = Singleton.ConvertOffsetToPoint(Singleton._buffer.Length).Y + 1;
EnsureMenuAndInputIsVisible(console, tooltipLineCount: 0);
if (menuSelect)
{
// Move cursor to the start of the first line after our input.
this.Top = Singleton.ConvertOffsetToPoint(Singleton._buffer.Length).Y + 1;
EnsureMenuAndInputIsVisible(console, tooltipLineCount: 0);

console.CursorVisible = false;
console.SaveCursor();
console.SetCursorPosition(0, this.Top);
console.CursorVisible = false;
console.SaveCursor();
console.SetCursorPosition(0, this.Top);
}
else
{
// Start a new line to show the menu contents
console.Write("\n");
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@lzybkr lzybkr Aug 16, 2018

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This could write over some of the buffer if you press Tab anywhere that is not the last line, e.g.:

PS> & { Get-C<Tab><Tab>
>> }

After pressing Tab Tab, the screen might look like:

PS> & { Get-C<Tab><Tab>
Get-C1   Get-C2    Get-C3
PS> & { Get-C
>> }

When it should look like:

PS> & { Get-C<Tab><Tab>
>> }
Get-C1   Get-C2    Get-C3
PS> & { Get-C
>> }

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@jianyunt jianyunt Aug 17, 2018 •
edited
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Jason, I submitted the fix and tested it. It seems working fine now. Please take a look it again. Thanks!

}

var bufferWidth = console.BufferWidth;
var columnWidth = this.ColumnWidth;
Expand Down Expand Up @@ -532,8 +540,18 @@ public void DrawMenu(Menu previousMenu)
}
}

console.RestoreCursor();
console.CursorVisible = true;
if (menuSelect)
{
console.RestoreCursor();
console.CursorVisible = true;
}
else
{
// Update the cursor coordinates after showing the menu.
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@lzybkr lzybkr Aug 19, 2018

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Is this block necessary? InvokePrompt is called immediately after the call site that passes menuSelect: false and InvokePrompt is correctly updating these fields.

I tested briefly with these commented out and didn't see any problems.

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@jianyunt jianyunt Aug 20, 2018

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You are right. We do not need it. I added it because I used Console.Write("\n") before. Removed it now. Thanks.

_singleton._initialX = console.CursorLeft;
_singleton._initialY = console.CursorTop;
_singleton._previousRender = _initialPrevRender;
}
}

public void Clear()
Expand Down Expand Up @@ -591,7 +609,8 @@ public void UpdateMenuSelection(int selectedItem, bool select, bool showTooltips
}
}

if (BufferLines + Rows + toolTipLines > console.WindowHeight)
// The +1 is for a new line after showing the tool tips
if ((Top + Rows + toolTipLines + 1) > console.WindowHeight)
{
showTooltips = false;
}
Expand Down Expand Up @@ -742,8 +761,8 @@ private void PossibleCompletionsImpl(CommandCompletion completions, bool menuSel
}
else
{
menu.DrawMenu(null);
InvokePrompt(key: null, arg: menu.Top + menu.Rows);
menu.DrawMenu(null, menuSelect:false);
InvokePrompt(key: null, arg: _console.CursorTop);
}
}

Expand Down Expand Up @@ -790,7 +809,7 @@ private void MenuCompleteImpl(Menu menu, CommandCompletion completions)
var userInitialCompletionLength = userCompletionText.Length;

completions.CurrentMatchIndex = 0;
menu.DrawMenu(null);
menu.DrawMenu(null, menuSelect:true);

bool processingKeys = true;
int previousSelection = -1;
Expand Down Expand Up @@ -821,7 +840,7 @@ private void MenuCompleteImpl(Menu menu, CommandCompletion completions)
if (topAdjustment != 0)
{
menu.Top += topAdjustment;
menu.DrawMenu(null);
menu.DrawMenu(null, menuSelect:true);
}
if (topAdjustment > 0)
{
Expand Down Expand Up @@ -898,7 +917,7 @@ private void MenuCompleteImpl(Menu menu, CommandCompletion completions)
{
var newMenu = menuStack.Pop();

newMenu.DrawMenu(menu);
newMenu.DrawMenu(menu, menuSelect:true);
previousSelection = -1;

menu = newMenu;
Expand Down Expand Up @@ -960,7 +979,7 @@ private void MenuCompleteImpl(Menu menu, CommandCompletion completions)
{
var newMenu = CreateCompletionMenu(newMatches);

newMenu.DrawMenu(menu);
newMenu.DrawMenu(menu, menuSelect:true);
previousSelection = -1;

// Remember the current menu for when we see Backspace.
Expand Down