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diff --git a/indra/llcommon/llkeybind.cpp b/indra/llcommon/llkeybind.cpp
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+/**
+ * @file llkeybind.cpp
+ * @brief Information about key combinations.
+ *
+ * $LicenseInfo:firstyear=2019&license=viewerlgpl$
+ * Second Life Viewer Source Code
+ * Copyright (C) 2019, Linden Research, Inc.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation;
+ * version 2.1 of the License only.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ *
+ * Linden Research, Inc., 945 Battery Street, San Francisco, CA 94111 USA
+ * $/LicenseInfo$
+ */
+
+#include "linden_common.h"
+
+#include "llkeybind.h"
+
+#include "llsd.h"
+#include "llsdutil.h"
+
+LLKeyData::LLKeyData()
+ :
+ mMouse(CLICK_NONE),
+ mKey(KEY_NONE),
+ mMask(MASK_NONE),
+ mIgnoreMasks(false)
+{
+}
+
+LLKeyData::LLKeyData(EMouseClickType mouse, KEY key, MASK mask)
+ :
+ mMouse(mouse),
+ mKey(key),
+ mMask(mask),
+ mIgnoreMasks(false)
+{
+}
+
+LLKeyData::LLKeyData(EMouseClickType mouse, KEY key, bool ignore_mask)
+ :
+ mMouse(mouse),
+ mKey(key),
+ mMask(MASK_NONE),
+ mIgnoreMasks(ignore_mask)
+{
+}
+
+LLKeyData::LLKeyData(EMouseClickType mouse, KEY key, MASK mask, bool ignore_mask)
+ :
+ mMouse(mouse),
+ mKey(key),
+ mMask(mask),
+ mIgnoreMasks(ignore_mask)
+{
+}
+
+LLKeyData::LLKeyData(const LLSD &key_data)
+{
+ if (key_data.has("mouse"))
+ {
+ mMouse = (EMouseClickType)key_data["mouse"].asInteger();
+ }
+ if (key_data.has("key"))
+ {
+ mKey = key_data["key"].asInteger();
+ }
+ if (key_data.has("ignore_accelerators"))
+ {
+ mIgnoreMasks = key_data["ignore_accelerators"];
+ }
+ if (key_data.has("mask"))
+ {
+ mMask = key_data["mask"].asInteger();
+ }
+}
+
+LLSD LLKeyData::asLLSD() const
+{
+ LLSD data;
+ data["mouse"] = (LLSD::Integer)mMouse;
+ data["key"] = (LLSD::Integer)mKey;
+ data["mask"] = (LLSD::Integer)mMask;
+ if (mIgnoreMasks)
+ {
+ data["ignore_accelerators"] = (LLSD::Boolean)mIgnoreMasks;
+ }
+ return data;
+}
+
+bool LLKeyData::isEmpty() const
+{
+ return mMouse == CLICK_NONE && mKey == KEY_NONE;
+}
+
+void LLKeyData::reset()
+{
+ mMouse = CLICK_NONE;
+ mKey = KEY_NONE;
+ mMask = MASK_NONE;
+ mIgnoreMasks = false;
+}
+
+LLKeyData& LLKeyData::operator=(const LLKeyData& rhs)
+{
+ mMouse = rhs.mMouse;
+ mKey = rhs.mKey;
+ mMask = rhs.mMask;
+ mIgnoreMasks = rhs.mIgnoreMasks;
+ return *this;
+}
+
+bool LLKeyData::operator==(const LLKeyData& rhs)
+{
+ if (mMouse != rhs.mMouse) return false;
+ if (mKey != rhs.mKey) return false;
+ if (mMask != rhs.mMask) return false;
+ if (mIgnoreMasks != rhs.mIgnoreMasks) return false;
+ return true;
+}
+
+bool LLKeyData::operator!=(const LLKeyData& rhs)
+{
+ if (mMouse != rhs.mMouse) return true;
+ if (mKey != rhs.mKey) return true;
+ if (mMask != rhs.mMask) return true;
+ if (mIgnoreMasks != rhs.mIgnoreMasks) return true;
+ return false;
+}
+
+bool LLKeyData::canHandle(const LLKeyData& data) const
+{
+ if (data.mKey == mKey
+ && data.mMouse == mMouse
+ && ((mIgnoreMasks && (data.mMask & mMask) == data.mMask) || data.mMask == mMask))
+ {
+ return true;
+ }
+ return false;
+}
+
+bool LLKeyData::canHandle(EMouseClickType mouse, KEY key, MASK mask) const
+{
+ if (mouse == mMouse
+ && key == mKey
+ && ((mIgnoreMasks && (mask & mMask) == mask) || mask == mMask))
+ {
+ return true;
+ }
+ return false;
+}
+
+// LLKeyBind
+
+LLKeyBind::LLKeyBind(const LLSD &key_bind)
+{
+ if (key_bind.isArray())
+ {
+ for (LLSD::array_const_iterator data = key_bind.beginArray(), endLists = key_bind.endArray();
+ data != endLists;
+ data++
+ )
+ {
+ mData.push_back(LLKeyData(*data));
+ }
+ }
+}
+
+bool LLKeyBind::operator==(const LLKeyBind& rhs)
+{
+ U32 size = mData.size();
+ if (size != rhs.mData.size()) return false;
+
+ for (U32 i = 0; i < size; i++)
+ {
+ if (mData[i] != rhs.mData[i]) return false;
+ }
+
+ return true;
+}
+
+bool LLKeyBind::operator!=(const LLKeyBind& rhs)
+{
+ U32 size = mData.size();
+ if (size != rhs.mData.size()) return true;
+
+ for (U32 i = 0; i < size; i++)
+ {
+ if (mData[i] != rhs.mData[i]) return true;
+ }
+
+ return false;
+}
+
+bool LLKeyBind::isEmpty() const
+{
+ for (data_vector_t::const_iterator iter = mData.begin(); iter != mData.end(); iter++)
+ {
+ if (!iter->isEmpty()) return false;
+ }
+ return true;
+}
+
+LLSD LLKeyBind::asLLSD() const
+{
+ S32 last = mData.size() - 1;
+ while (mData[last].empty())
+ {
+ last--;
+ }
+
+ LLSD data;
+ for (S32 i = 0; i <= last; ++i)
+ {
+ // append even if empty to not affect visual representation
+ data.append(mData[i].asLLSD());
+ }
+ return data;
+}
+
+bool LLKeyBind::canHandle(EMouseClickType mouse, KEY key, MASK mask) const
+{
+ if (mouse == CLICK_NONE && key == KEY_NONE)
+ {
+ // assume placeholder
+ return false;
+ }
+
+ for (data_vector_t::const_iterator iter = mData.begin(); iter != mData.end(); iter++)
+ {
+ if (iter->canHandle(mouse, key, mask))
+ {
+ return true;
+ }
+ }
+ return false;
+}
+
+bool LLKeyBind::canHandleKey(KEY key, MASK mask) const
+{
+ return canHandle(CLICK_NONE, key, mask);
+}
+
+bool LLKeyBind::canHandleMouse(EMouseClickType mouse, MASK mask) const
+{
+ return canHandle(mouse, KEY_NONE, mask);
+}
+
+bool LLKeyBind::hasKeyData(EMouseClickType mouse, KEY key, MASK mask, bool ignore) const
+{
+ if (mouse != CLICK_NONE || key != KEY_NONE)
+ {
+ for (data_vector_t::const_iterator iter = mData.begin(); iter != mData.end(); iter++)
+ {
+ if (iter->mKey == key
+ && iter->mMask == mask
+ && iter->mMouse == mouse
+ && iter->mIgnoreMasks == ignore)
+ {
+ return true;
+ }
+ }
+ }
+ return false;
+}
+
+bool LLKeyBind::hasKeyData(const LLKeyData& data) const
+{
+ return hasKeyData(data.mMouse, data.mKey, data.mMask, data.mIgnoreMasks);
+}
+
+bool LLKeyBind::hasKeyData(U32 index) const
+{
+ return mData.size() > index;
+}
+
+S32 LLKeyBind::findKeyData(EMouseClickType mouse, KEY key, MASK mask, bool ignore) const
+{
+ if (mouse != CLICK_NONE || key != KEY_NONE)
+ {
+ for (S32 i = 0; i < mData.size(); ++i)
+ {
+ if (mData[i].mKey == key
+ && mData[i].mMask == mask
+ && mData[i].mMouse == mouse
+ && mData[i].mIgnoreMasks == ignore)
+ {
+ return i;
+ }
+ }
+ }
+ return -1;
+}
+
+S32 LLKeyBind::findKeyData(const LLKeyData& data) const
+{
+ return findKeyData(data.mMouse, data.mKey, data.mMask, data.mIgnoreMasks);
+}
+
+LLKeyData LLKeyBind::getKeyData(U32 index) const
+{
+ if (mData.size() > index)
+ {
+ return mData[index];
+ }
+ return LLKeyData();
+}
+
+bool LLKeyBind::addKeyData(EMouseClickType mouse, KEY key, MASK mask, bool ignore)
+{
+ if (!hasKeyData(mouse, key, mask, ignore))
+ {
+ mData.push_back(LLKeyData(mouse, key, mask, ignore));
+ return true;
+ }
+ return false;
+}
+
+bool LLKeyBind::addKeyData(const LLKeyData& data)
+{
+ if (!hasKeyData(data))
+ {
+ mData.push_back(data);
+ return true;
+ }
+ return false;
+}
+
+void LLKeyBind::replaceKeyData(EMouseClickType mouse, KEY key, MASK mask, bool ignore, U32 index)
+{
+ replaceKeyData(LLKeyData(mouse, key, mask, ignore), index);
+}
+
+void LLKeyBind::replaceKeyData(const LLKeyData& data, U32 index)
+{
+ if (!data.isEmpty())
+ {
+ // if both click and key are none (isEmpty()), we are inserting a placeholder, we don't want to reset anything
+ // otherwise reset identical key
+ for (data_vector_t::iterator iter = mData.begin(); iter != mData.end(); iter++)
+ {
+ if (iter->mKey == data.mKey
+ && iter->mMouse == data.mMouse
+ && iter->mIgnoreMasks == data.mIgnoreMasks
+ && iter->mMask == data.mMask)
+ {
+ // Replacing only fully equal combinations even in case 'ignore' is set
+ // Reason: Simplicity and user might decide to do a 'move' command as W and Shift+Ctrl+W, and 'run' as Shift+W
+ iter->reset();
+ break;
+ }
+ }
+ }
+ if (mData.size() <= index)
+ {
+ mData.resize(index + 1);
+ }
+ mData[index] = data;
+}
+
+void LLKeyBind::resetKeyData(S32 index)
+{
+ if (mData.size() > index)
+ {
+ mData[index].reset();
+ }
+}
+
+void LLKeyBind::trimEmpty()
+{
+ S32 last = mData.size() - 1;
+ while (last >= 0 && mData[last].empty())
+ {
+ mData.erase(mData.begin() + last);
+ last--;
+ }
+}
+
+U32 LLKeyBind::getDataCount()
+{
+ return mData.size();
+}
+
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