From ddfc6efbeeda5d2b08888a7ae0f04df242326e26 Mon Sep 17 00:00:00 2001
From: richard <none@none>
Date: Fri, 5 Feb 2010 11:32:33 -0800
Subject: EXT-5025 - Tooltips block mouse clicks EXT-4547	[BSI] it is
 possible to highlight multiple layers of chat EXT-3844 	Mouse wheel
 camera zoom is not reflected on View popup slider EXT-3103 	Add an option
 to restrict entering non-ascii symbols in text editor.

reviewed by Leyla
---
 indra/llui/lltexteditor.cpp | 48 +++++++++++++++++++++++++++++++++++++++++++--
 1 file changed, 46 insertions(+), 2 deletions(-)

(limited to 'indra/llui/lltexteditor.cpp')

diff --git a/indra/llui/lltexteditor.cpp b/indra/llui/lltexteditor.cpp
index 3fdb48b3ca..e196abc89a 100644
--- a/indra/llui/lltexteditor.cpp
+++ b/indra/llui/lltexteditor.cpp
@@ -237,13 +237,16 @@ private:
 ///////////////////////////////////////////////////////////////////
 LLTextEditor::Params::Params()
 :	default_text("default_text"),
+	prevalidate_callback("prevalidate_callback"),
 	embedded_items("embedded_items", false),
 	ignore_tab("ignore_tab", true),
 	handle_edit_keys_directly("handle_edit_keys_directly", false),
 	show_line_numbers("show_line_numbers", false),
 	default_color("default_color"),
     commit_on_focus_lost("commit_on_focus_lost", false)
-{}
+{
+	addSynonym(prevalidate_callback, "text_type");
+}
 
 LLTextEditor::LLTextEditor(const LLTextEditor::Params& p) :
 	LLTextBase(p),
@@ -258,6 +261,7 @@ LLTextEditor::LLTextEditor(const LLTextEditor::Params& p) :
 	mMouseDownX(0),
 	mMouseDownY(0),
 	mTabsToNextField(p.ignore_tab),
+	mPrevalidateFunc(p.prevalidate_callback()),
 	mContextMenu(NULL)
 {
 	mDefaultFont = p.font;
@@ -318,9 +322,20 @@ LLTextEditor::~LLTextEditor()
 
 void LLTextEditor::setText(const LLStringExplicit &utf8str, const LLStyle::Params& input_params)
 {
+	// validate incoming text if necessary
+	if (mPrevalidateFunc)
+	{
+		LLWString test_text = utf8str_to_wstring(utf8str);
+		if (!mPrevalidateFunc(test_text))
+		{
+			// not valid text, nothing to do
+			return;
+		}
+	}
+
 	blockUndo();
 	deselect();
-
+	
 	LLTextBase::setText(utf8str, input_params);
 
 	resetDirty();
@@ -909,6 +924,21 @@ S32 LLTextEditor::execute( TextCmd* cmd )
 		// Push the new command is now on the top (front) of the undo stack.
 		mUndoStack.push_front(cmd);
 		mLastCmd = cmd;
+
+		bool need_to_rollback = mPrevalidateFunc 
+								&& !mPrevalidateFunc(getViewModel()->getDisplay());
+		if (need_to_rollback)
+		{
+			// get rid of this last command and clean up undo stack
+			undo();
+
+			// remove any evidence of this command from redo history
+			mUndoStack.pop_front();
+			delete cmd;
+
+			// failure, nothing changed
+			delta = 0;
+		}
 	}
 	else
 	{
@@ -1032,7 +1062,21 @@ S32 LLTextEditor::addChar(S32 pos, llwchar wc)
 	if (mLastCmd && mLastCmd->canExtend(pos))
 	{
 		S32 delta = 0;
+		if (mPrevalidateFunc)
+		{
+			// get a copy of current text contents
+			LLWString test_string(getViewModel()->getDisplay());
+
+			// modify text contents as if this addChar succeeded
+			llassert(pos <= (S32)test_string.size());
+			test_string.insert(pos, 1, wc);
+			if (!mPrevalidateFunc( test_string))
+			{
+				return 0;
+			}
+		}
 		mLastCmd->extendAndExecute(this, pos, wc, &delta);
+
 		return delta;
 	}
 	else
-- 
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