From 3bffa6b04a0e4a75de8c66270e3e1918e52c9f75 Mon Sep 17 00:00:00 2001
From: TheSumm <sum9900@web.de>
Date: Sat, 7 Mar 2015 16:32:45 +0100
Subject: [PATCH] Terminal new line (Shift+Enter) functionality

---
 modules/client_terminal/terminal.lua  | 32 ++++++++++++++++++++++-----
 modules/client_terminal/terminal.otui | 17 +++++++++++---
 2 files changed, 40 insertions(+), 9 deletions(-)

diff --git a/modules/client_terminal/terminal.lua b/modules/client_terminal/terminal.lua
index 861cbf35..38d74dde 100644
--- a/modules/client_terminal/terminal.lua
+++ b/modules/client_terminal/terminal.lua
@@ -30,6 +30,10 @@ local allLines = {}
 
 -- private functions
 local function navigateCommand(step)
+  if commandTextEdit:isMultiline() then
+    return
+  end
+
   local numCommands = #commandHistory
   if numCommands > 0 then
     currentHistoryIndex = math.min(math.max(currentHistoryIndex + step, 0), numCommands)
@@ -96,14 +100,27 @@ local function completeCommand()
   end
 end
 
-local function doCommand()
-  local currentCommand = commandTextEdit:getText()
+local function doCommand(textWidget)
+  local currentCommand = textWidget:getText()
   executeCommand(currentCommand)
+  textWidget:clearText()
+  return true
+end
 
-  if commandTextEdit then
-    commandTextEdit:clearText()
+local function addNewline(textWidget)
+  if not textWidget:isOn() then
+    textWidget:setOn(true)
+  end
+  textWidget:appendText('\n')
+end
+
+local function onCommandChange(textWidget, newText, oldText)
+  local _, newLineCount = string.gsub(newText, '\n', '\n')
+  textWidget:setHeight((newLineCount + 1) * textWidget.baseHeight)
+
+  if newLineCount == 0 and textWidget:isOn() then
+    textWidget:setOn(false)
   end
-  return true
 end
 
 local function onLog(level, message, time)
@@ -129,6 +146,8 @@ function init()
   commandHistory = g_settings.getList('terminal-history')
 
   commandTextEdit = terminalWindow:getChildById('commandTextEdit')
+  commandTextEdit:setHeight(commandTextEdit.baseHeight)
+  connect(commandTextEdit, {onTextChange = onCommandChange})
   g_keyboard.bindKeyPress('Up', function() navigateCommand(1) end, commandTextEdit)
   g_keyboard.bindKeyPress('Down', function() navigateCommand(-1) end, commandTextEdit)
   g_keyboard.bindKeyPress('Ctrl+C',
@@ -138,6 +157,7 @@ function init()
     return true
     end, commandTextEdit)
   g_keyboard.bindKeyDown('Tab', completeCommand, commandTextEdit)
+  g_keyboard.bindKeyPress('Shift+Enter', addNewline, commandTextEdit)
   g_keyboard.bindKeyDown('Enter', doCommand, commandTextEdit)
   g_keyboard.bindKeyDown('Escape', hide, terminalWindow)
 
@@ -293,7 +313,7 @@ function addLine(text, color)
 end
 
 function executeCommand(command)
-  if command == nil or #command == 0 then return end
+  if command == nil or #string.gsub(command, '\n', '') == 0 then return end
 
   -- add command line
   addLine("> " .. command, "#ffffff")
diff --git a/modules/client_terminal/terminal.otui b/modules/client_terminal/terminal.otui
index afcd0a26..67b8ba06 100644
--- a/modules/client_terminal/terminal.otui
+++ b/modules/client_terminal/terminal.otui
@@ -47,7 +47,7 @@ UIWindow
     anchors.left: parent.left
     anchors.right: terminalScroll.left
     anchors.top: terminalScroll.top
-    anchors.bottom: commandSymbolLabel.top
+    anchors.bottom: commandTextEdit.top
     layout:
       type: verticalBox
       align-bottom: true
@@ -80,14 +80,25 @@ UIWindow
 
   UITextEdit
     id: commandTextEdit
-    height: 12
+    background: #aaaaaa11
+    border-color: #aaaaaa88
+    &baseHeight: 12
     anchors.bottom: parent.bottom
     anchors.left: commandSymbolLabel.right
-    anchors.right: parent.right
+    anchors.right: terminalScroll.left
     margin-left: 1
+    padding-left: 2
     font: terminus-10px
     selection-color: black
     selection-background-color: white
+    border-width-left: 0
+    border-width-top: 0
+    multiline: false
+
+    $on:
+      border-width-left: 1
+      border-width-top: 1
+      multiline: true
 
   ResizeBorder
     id: bottomResizeBorder