SL-10297: merge up to master at 6.4.3

1 files changed, 1178 insertions, 0 deletions

diff --git a/indra/newview/llpanelenvironment.cpp b/indra/newview/llpanelenvironment.cpp
new file mode 100644
index 0000000000..2ad7a23278
--- /dev/null
+++ b/indra/newview/llpanelenvironment.cpp
@@ -0,0 +1,1178 @@
+/** 
+ * @file llpanelenvironment.cpp
+ * @brief LLPanelExperiences class implementation
+ *
+ * $LicenseInfo:firstyear=2013&license=viewerlgpl$
+ * Second Life Viewer Source Code
+ * Copyright (C) 2013, 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 "llviewerprecompiledheaders.h"
+
+
+#include "llpanelprofile.h"
+#include "lluictrlfactory.h"
+#include "llexperiencecache.h"
+#include "llagent.h"
+#include "llparcel.h"
+
+#include "llviewerregion.h"
+#include "llpanelenvironment.h"
+#include "llslurl.h"
+#include "lllayoutstack.h"
+
+#include "llfloater.h"
+#include "llfloaterreg.h"
+#include "llfloatereditextdaycycle.h"
+#include "llmultisliderctrl.h"
+#include "llnotificationsutil.h"
+#include "llsettingsvo.h"
+
+#include "llappviewer.h"
+#include "llcallbacklist.h"
+#include "llviewerparcelmgr.h"
+
+#include "llinventorymodel.h"
+
+//=========================================================================
+namespace 
+{
+    const std::string FLOATER_DAY_CYCLE_EDIT("env_edit_extdaycycle");
+    const std::string STRING_REGION_ENV("str_region_env");
+    const std::string STRING_EMPTY_NAME("str_empty");
+
+    inline bool ends_with(std::string const & value, std::string const & ending)
+    {
+        if (ending.size() > value.size())
+            return false;
+        return std::equal(ending.rbegin(), ending.rend(), value.rbegin());
+    }
+
+}
+
+//=========================================================================
+const std::string LLPanelEnvironmentInfo::BTN_SELECTINV("btn_select_inventory");
+const std::string LLPanelEnvironmentInfo::BTN_EDIT("btn_edit");
+const std::string LLPanelEnvironmentInfo::BTN_USEDEFAULT("btn_usedefault");
+const std::string LLPanelEnvironmentInfo::BTN_RST_ALTITUDES("btn_rst_altitudes");
+const std::string LLPanelEnvironmentInfo::SLD_DAYLENGTH("sld_day_length");
+const std::string LLPanelEnvironmentInfo::SLD_DAYOFFSET("sld_day_offset");
+const std::string LLPanelEnvironmentInfo::SLD_ALTITUDES("sld_altitudes");
+const std::string LLPanelEnvironmentInfo::ICN_GROUND("icon_ground");
+const std::string LLPanelEnvironmentInfo::ICN_WATER("icon_water");
+const std::string LLPanelEnvironmentInfo::CHK_ALLOWOVERRIDE("chk_allow_override");
+const std::string LLPanelEnvironmentInfo::LBL_TIMEOFDAY("lbl_apparent_time");
+const std::string LLPanelEnvironmentInfo::PNL_SETTINGS("pnl_environment_config");
+const std::string LLPanelEnvironmentInfo::PNL_ENVIRONMENT_ALTITUDES("pnl_environment_altitudes");
+const std::string LLPanelEnvironmentInfo::PNL_BUTTONS("pnl_environment_buttons");
+const std::string LLPanelEnvironmentInfo::PNL_DISABLED("pnl_environment_disabled");
+const std::string LLPanelEnvironmentInfo::TXT_DISABLED("txt_environment_disabled");
+const std::string LLPanelEnvironmentInfo::PNL_REGION_MSG("pnl_environment_region_msg");
+const std::string LLPanelEnvironmentInfo::SDT_DROP_TARGET("sdt_drop_target");
+
+const std::string LLPanelEnvironmentInfo::STR_LABEL_USEDEFAULT("str_label_use_default");
+const std::string LLPanelEnvironmentInfo::STR_LABEL_USEREGION("str_label_use_region");
+const std::string LLPanelEnvironmentInfo::STR_ALTITUDE_DESCRIPTION("str_altitude_desription");
+const std::string LLPanelEnvironmentInfo::STR_NO_PARCEL("str_no_parcel");
+const std::string LLPanelEnvironmentInfo::STR_CROSS_REGION("str_cross_region");
+const std::string LLPanelEnvironmentInfo::STR_LEGACY("str_legacy");
+const std::string LLPanelEnvironmentInfo::STR_DISALLOWED("str_disallowed");
+const std::string LLPanelEnvironmentInfo::STR_TOO_SMALL("str_too_small");
+
+const S32 LLPanelEnvironmentInfo::MINIMUM_PARCEL_SIZE(128);
+
+const U32 LLPanelEnvironmentInfo::DIRTY_FLAG_DAYCYCLE(0x01 << 0);
+const U32 LLPanelEnvironmentInfo::DIRTY_FLAG_DAYLENGTH(0x01 << 1);
+const U32 LLPanelEnvironmentInfo::DIRTY_FLAG_DAYOFFSET(0x01 << 2);
+const U32 LLPanelEnvironmentInfo::DIRTY_FLAG_ALTITUDES(0x01 << 3);
+
+const U32 LLPanelEnvironmentInfo::DIRTY_FLAG_MASK(
+        LLPanelEnvironmentInfo::DIRTY_FLAG_DAYCYCLE | 
+        LLPanelEnvironmentInfo::DIRTY_FLAG_DAYLENGTH | 
+        LLPanelEnvironmentInfo::DIRTY_FLAG_DAYOFFSET |
+        LLPanelEnvironmentInfo::DIRTY_FLAG_ALTITUDES);
+
+const U32 ALTITUDE_SLIDER_COUNT = 3;
+const F32 ALTITUDE_DEFAULT_HEIGHT_STEP = 1000;
+const U32 ALTITUDE_MARKERS_COUNT = 3;
+const U32 ALTITUDE_PREFIXERS_COUNT = 5;
+
+const std::string slider_marker_base = "mark";
+
+const std::string alt_sliders[] = {
+    "sld1",
+    "sld2",
+    "sld3",
+};
+
+const std::string alt_prefixes[] = {
+    "alt1",
+    "alt2",
+    "alt3",
+    "ground",
+    "water",
+};
+
+const std::string alt_panels[] = {
+    "pnl_alt1",
+    "pnl_alt2",
+    "pnl_alt3",
+    "pnl_ground",
+    "pnl_water",
+};
+
+static LLDefaultChildRegistry::Register<LLSettingsDropTarget> r("settings_drop_target");
+
+//=========================================================================
+LLPanelEnvironmentInfo::LLPanelEnvironmentInfo(): 
+    mCurrentEnvironment(),
+    mDirtyFlag(0),
+    mEditorLastParcelId(INVALID_PARCEL_ID),
+    mCrossRegion(false),
+    mNoSelection(false),
+    mNoEnvironment(false),
+    mCurEnvVersion(INVALID_PARCEL_ENVIRONMENT_VERSION),
+    mSettingsFloater(),
+    mEditFloater(),
+    mAllowOverride(true)
+{
+}
+
+LLPanelEnvironmentInfo::~LLPanelEnvironmentInfo()
+{
+    if (mChangeMonitor.connected())
+        mChangeMonitor.disconnect();
+    if (mCommitConnection.connected())
+        mCommitConnection.disconnect();
+    if (mUpdateConnection.connected())
+        mUpdateConnection.disconnect();
+}
+
+BOOL LLPanelEnvironmentInfo::postBuild()
+{
+
+    getChild<LLUICtrl>(BTN_USEDEFAULT)->setCommitCallback([this](LLUICtrl *, const LLSD &){ onBtnDefault(); });
+    getChild<LLUICtrl>(BTN_SELECTINV)->setCommitCallback([this](LLUICtrl *, const LLSD &){ onBtnSelect(); });
+    getChild<LLUICtrl>(BTN_EDIT)->setCommitCallback([this](LLUICtrl *, const LLSD &){ onBtnEdit(); });
+    getChild<LLUICtrl>(BTN_RST_ALTITUDES)->setCommitCallback([this](LLUICtrl *, const LLSD &){ onBtnRstAltitudes(); });
+
+    getChild<LLUICtrl>(SLD_DAYLENGTH)->setCommitCallback([this](LLUICtrl *, const LLSD &value) { onSldDayLengthChanged(value.asReal()); });
+    getChild<LLSliderCtrl>(SLD_DAYLENGTH)->setSliderMouseUpCallback([this](LLUICtrl *, const LLSD &) { onDayLenOffsetMouseUp(); });
+    getChild<LLSliderCtrl>(SLD_DAYLENGTH)->setSliderEditorCommitCallback([this](LLUICtrl *, const LLSD &) { onDayLenOffsetMouseUp(); });
+    getChild<LLUICtrl>(SLD_DAYOFFSET)->setCommitCallback([this](LLUICtrl *, const LLSD &value) { onSldDayOffsetChanged(value.asReal()); });
+    getChild<LLSliderCtrl>(SLD_DAYOFFSET)->setSliderMouseUpCallback([this](LLUICtrl *, const LLSD &) { onDayLenOffsetMouseUp(); });
+    getChild<LLSliderCtrl>(SLD_DAYOFFSET)->setSliderEditorCommitCallback([this](LLUICtrl *, const LLSD &) { onDayLenOffsetMouseUp(); });
+
+    getChild<LLMultiSliderCtrl>(SLD_ALTITUDES)->setCommitCallback([this](LLUICtrl *cntrl, const LLSD &value) { onAltSliderCallback(cntrl, value); });
+    getChild<LLMultiSliderCtrl>(SLD_ALTITUDES)->setSliderMouseUpCallback([this](LLUICtrl *, const LLSD &) { onAltSliderMouseUp(); });
+
+    mChangeMonitor = LLEnvironment::instance().setEnvironmentChanged([this](LLEnvironment::EnvSelection_t env, S32 version) { onEnvironmentChanged(env, version); });
+
+    for (U32 idx = 0; idx < ALTITUDE_SLIDER_COUNT; idx++)
+    {
+        LLSettingsDropTarget* drop_target = findChild<LLSettingsDropTarget>("sdt_" + alt_prefixes[idx]);
+        if (drop_target)
+        {
+            drop_target->setPanel(this, alt_sliders[idx]);
+        }
+        // set initial values to prevent [ALTITUDE] from displaying
+        updateAltLabel(alt_prefixes[idx], idx + 2, idx * 1000);
+    }
+    getChild<LLSettingsDropTarget>("sdt_" + alt_prefixes[3])->setPanel(this, alt_prefixes[3]);
+    getChild<LLSettingsDropTarget>("sdt_" + alt_prefixes[4])->setPanel(this, alt_prefixes[4]);
+
+    return TRUE;
+}
+
+// virtual
+void LLPanelEnvironmentInfo::onOpen(const LLSD& key)
+{
+    refreshFromSource();
+}
+
+// virtual
+void LLPanelEnvironmentInfo::onVisibilityChange(BOOL new_visibility)
+{
+    if (new_visibility)
+    {
+        gIdleCallbacks.addFunction(onIdlePlay, this);
+    }
+    else
+    {
+        commitDayLenOffsetChanges(false); // arrow-key changes
+
+        LLFloaterSettingsPicker *picker = getSettingsPicker(false);
+        if (picker)
+        {
+            picker->closeFloater();
+        }
+
+        gIdleCallbacks.deleteFunction(onIdlePlay, this);
+        LLFloaterEditExtDayCycle *dayeditor = getEditFloater(false);
+        if (mCommitConnection.connected())
+            mCommitConnection.disconnect();
+
+        if (dayeditor)
+        {
+            if (dayeditor->isDirty())
+                dayeditor->refresh();
+            else
+            {
+                dayeditor->closeFloater();
+                mEditFloater.markDead();
+            }
+        }
+    }
+
+}
+
+void LLPanelEnvironmentInfo::refresh()
+{
+    if (gDisconnected)
+        return;
+
+    if (!setControlsEnabled(canEdit()))
+        return;
+
+    if (!mCurrentEnvironment)
+    {
+        return;
+    }
+
+    F32Hours daylength(mCurrentEnvironment->mDayLength);
+    F32Hours dayoffset(mCurrentEnvironment->mDayOffset);
+
+    if (dayoffset.value() > 12.0f)
+        dayoffset -= F32Hours(24.0);
+
+    getChild<LLSliderCtrl>(SLD_DAYLENGTH)->setValue(daylength.value());
+    getChild<LLSliderCtrl>(SLD_DAYOFFSET)->setValue(dayoffset.value());
+   
+    udpateApparentTimeOfDay();
+
+    updateEditFloater(mCurrentEnvironment, canEdit());
+
+    LLEnvironment::altitude_list_t altitudes = mCurrentEnvironment->mAltitudes;
+
+    if (altitudes.size() > 0)
+    {
+        LLMultiSliderCtrl *sld = getChild<LLMultiSliderCtrl>(SLD_ALTITUDES);
+        sld->clear();
+
+        for (S32 idx = 0; idx < ALTITUDE_SLIDER_COUNT; ++idx)
+        {
+            // make sure values are in range, server is supposed to validate them,
+            // but issues happen, try to fix values in such case
+            F32 altitude = llclamp(altitudes[idx + 1], sld->getMinValue(), sld->getMaxValue());
+            bool res = sld->addSlider(altitude, alt_sliders[idx]);
+            if (!res)
+            {
+                LL_WARNS_ONCE("ENVPANEL") << "Failed to validate altitude from server for parcel id" << getParcelId() << LL_ENDL;
+                // Find a spot to insert altitude.
+                // Assuming everything alright with slider, we should find new place in 11 steps top (step 25m, no overlap 100m)
+                F32 alt_step = (altitude > (sld->getMaxValue() / 2)) ? -sld->getIncrement() : sld->getIncrement();
+                for (U32 i = 0; i < 30; i++)
+                {
+                    altitude += alt_step;
+                    if (altitude > sld->getMaxValue())
+                    {
+                        altitude = sld->getMinValue();
+                    }
+                    else if (altitude < sld->getMinValue())
+                    {
+                        altitude = sld->getMaxValue();
+                    }
+                    res = sld->addSlider(altitude, alt_sliders[idx]);
+                    if (res) break;
+                }
+            }
+            if (res)
+            {
+                // slider has some auto correction that might have kicked in
+                altitude = sld->getSliderValue(alt_sliders[idx]);
+            }
+            else
+            {
+                // Something is very very wrong
+                LL_WARNS_ONCE("ENVPANEL") << "Failed to set up altitudes for parcel id " << getParcelId() << LL_ENDL;
+            }
+            updateAltLabel(alt_prefixes[idx], idx + 2, altitude);
+            mAltitudes[alt_sliders[idx]] = AltitudeData(idx + 2, idx, altitude);
+        }
+        if (sld->getCurNumSliders() != ALTITUDE_SLIDER_COUNT)
+        {
+            LL_WARNS("ENVPANEL") << "Failed to add altitude sliders!" << LL_ENDL;
+        }
+        readjustAltLabels();
+        sld->resetCurSlider();
+    }
+
+    updateAltLabel(alt_prefixes[3], 1, 0); // ground
+    updateAltLabel(alt_prefixes[4], 0, 0); // water
+
+}
+
+void LLPanelEnvironmentInfo::refreshFromEstate()
+{
+    LLViewerRegion *pRegion = gAgent.getRegion();
+
+    bool oldAO = mAllowOverride;
+    mAllowOverride = (isRegion() && LLEstateInfoModel::instance().getAllowEnvironmentOverride()) || pRegion->getAllowEnvironmentOverride();
+    if (oldAO != mAllowOverride)
+        refresh();
+}
+
+std::string LLPanelEnvironmentInfo::getNameForTrackIndex(S32 index)
+{
+    std::string invname;
+    if (!mCurrentEnvironment || index < LLSettingsDay::TRACK_WATER || index >= LLSettingsDay::TRACK_MAX)
+    {
+        invname = getString(STRING_EMPTY_NAME);
+    }
+    else if (mCurrentEnvironment->mDayCycleName.empty())
+    {
+        invname = mCurrentEnvironment->mNameList[index];
+
+        if (invname.empty())
+        {
+            if (index <= LLSettingsDay::TRACK_GROUND_LEVEL)
+                invname = getString(isRegion() ? STRING_EMPTY_NAME : STRING_REGION_ENV);
+        }
+    }
+    else if (!mCurrentEnvironment->mDayCycle->isTrackEmpty(index))
+    {
+        invname = mCurrentEnvironment->mDayCycleName;
+    }
+
+
+    if (invname.empty())
+    {
+        invname = getNameForTrackIndex(index - 1);
+        if (invname[0] != '(')
+            invname = "(" + invname + ")";
+    }
+
+    return invname;
+}
+
+LLFloaterSettingsPicker * LLPanelEnvironmentInfo::getSettingsPicker(bool create)
+{
+    LLFloaterSettingsPicker *picker = static_cast<LLFloaterSettingsPicker *>(mSettingsFloater.get());
+
+    // Show the dialog
+    if (!picker && create)
+    {
+        picker = new LLFloaterSettingsPicker(this,
+            LLUUID::null);
+
+        mSettingsFloater = picker->getHandle();
+
+        picker->setCommitCallback([this](LLUICtrl *, const LLSD &data){ onPickerCommitted(data["ItemId"].asUUID()); });
+    }
+
+    return picker;
+}
+
+LLFloaterEditExtDayCycle * LLPanelEnvironmentInfo::getEditFloater(bool create)
+{
+    static const S32 FOURHOURS(4 * 60 * 60);
+    LLFloaterEditExtDayCycle *editor = static_cast<LLFloaterEditExtDayCycle *>(mEditFloater.get());
+
+    // Show the dialog
+    if (!editor && create)
+    {
+        LLSD params(LLSDMap(LLFloaterEditExtDayCycle::KEY_EDIT_CONTEXT, isRegion() ? LLFloaterEditExtDayCycle::CONTEXT_REGION : LLFloaterEditExtDayCycle::CONTEXT_PARCEL)
+            (LLFloaterEditExtDayCycle::KEY_DAY_LENGTH, mCurrentEnvironment ? (S32)(mCurrentEnvironment->mDayLength.value()) : FOURHOURS));
+
+        editor = (LLFloaterEditExtDayCycle *)LLFloaterReg::getInstance(FLOATER_DAY_CYCLE_EDIT, params);
+
+        if (!editor)
+            return nullptr;
+        mEditFloater = editor->getHandle();
+    }
+
+    if (editor && !mCommitConnection.connected())
+        mCommitConnection = editor->setEditCommitSignal([this](LLSettingsDay::ptr_t pday) { onEditCommitted(pday); });
+
+    return editor;
+}
+
+
+void LLPanelEnvironmentInfo::updateEditFloater(const LLEnvironment::EnvironmentInfo::ptr_t &nextenv, bool enable)
+{
+    LLFloaterEditExtDayCycle *dayeditor(getEditFloater(false));
+
+    if (!dayeditor || !dayeditor->isInVisibleChain())
+        return;
+
+    if (!nextenv || !nextenv->mDayCycle || !enable)
+    {
+        if (mCommitConnection.connected())
+            mCommitConnection.disconnect();
+
+        if (dayeditor->isDirty())
+            dayeditor->refresh();
+        else
+            dayeditor->closeFloater();
+    }
+    else if (dayeditor->getEditingAssetId() != nextenv->mDayCycle->getAssetId()
+            || mEditorLastParcelId != nextenv->mParcelId
+            || mEditorLastRegionId != nextenv->mRegionId)
+    {
+        // Ignore dirty
+        // If parcel selection changed whatever we do except saving to inventory with
+        // old settings will be invalid.
+        mEditorLastParcelId = nextenv->mParcelId;
+        mEditorLastRegionId = nextenv->mRegionId;
+
+        dayeditor->setEditDayCycle(nextenv->mDayCycle);
+    }
+}
+
+bool LLPanelEnvironmentInfo::setControlsEnabled(bool enabled)
+{
+    bool is_unavailable(false);
+    bool is_legacy = (mCurrentEnvironment) ? mCurrentEnvironment->mIsLegacy : true;
+    bool is_bigenough = isLargeEnough();
+
+    if (mNoEnvironment || (!LLEnvironment::instance().isExtendedEnvironmentEnabled() && !isRegion()))
+    {
+        is_unavailable = true;
+        getChild<LLTextBox>(TXT_DISABLED)->setText(getString(STR_LEGACY));
+    }
+    else if (mNoSelection)
+    {
+        is_unavailable = true;
+        getChild<LLTextBox>(TXT_DISABLED)->setText(getString(STR_NO_PARCEL));
+    }
+    else if (mCrossRegion)
+    {
+        is_unavailable = true;
+        getChild<LLTextBox>(TXT_DISABLED)->setText(getString(STR_CROSS_REGION));
+    }
+    else if (!isRegion() && !mAllowOverride)
+    {
+        is_unavailable = true;
+        getChild<LLTextBox>(TXT_DISABLED)->setText(getString(STR_DISALLOWED));
+    }
+    else if (!is_bigenough)
+    {
+        is_unavailable = true;
+        getChild<LLTextBox>(TXT_DISABLED)->setText(getString(STR_TOO_SMALL));
+    }
+
+    if (is_unavailable)
+    {
+        getChild<LLUICtrl>(PNL_SETTINGS)->setVisible(false);
+        getChild<LLUICtrl>(PNL_BUTTONS)->setVisible(false);
+        getChild<LLUICtrl>(PNL_DISABLED)->setVisible(true);
+        getChild<LLUICtrl>(PNL_ENVIRONMENT_ALTITUDES)->setVisible(false);
+        getChild<LLUICtrl>(PNL_REGION_MSG)->setVisible(false);
+        updateEditFloater(mCurrentEnvironment, false);
+
+        return false;
+    }
+    getChild<LLUICtrl>(PNL_SETTINGS)->setVisible(true);
+    getChild<LLUICtrl>(PNL_BUTTONS)->setVisible(true);
+    getChild<LLUICtrl>(PNL_DISABLED)->setVisible(false);
+    getChild<LLUICtrl>(PNL_REGION_MSG)->setVisible(isRegion());
+
+    getChild<LLUICtrl>(PNL_ENVIRONMENT_ALTITUDES)->setVisible(LLEnvironment::instance().isExtendedEnvironmentEnabled());
+    getChild<LLUICtrl>(BTN_RST_ALTITUDES)->setVisible(isRegion());
+
+    bool can_enable = enabled && !is_legacy && mCurrentEnvironment && (mCurEnvVersion != INVALID_PARCEL_ENVIRONMENT_VERSION);
+    getChild<LLUICtrl>(BTN_SELECTINV)->setEnabled(can_enable);
+    getChild<LLUICtrl>(BTN_USEDEFAULT)->setEnabled(can_enable);
+    getChild<LLUICtrl>(BTN_EDIT)->setEnabled(can_enable);
+    getChild<LLUICtrl>(SLD_DAYLENGTH)->setEnabled(can_enable);
+    getChild<LLUICtrl>(SLD_DAYOFFSET)->setEnabled(can_enable);
+    getChild<LLUICtrl>(SLD_ALTITUDES)->setEnabled(can_enable && isRegion());
+    getChild<LLUICtrl>(ICN_GROUND)->setColor((can_enable && isRegion()) ? LLColor4::white : LLColor4::grey % 0.8f);
+    getChild<LLUICtrl>(ICN_WATER)->setColor((can_enable && isRegion()) ? LLColor4::white : LLColor4::grey % 0.8f);
+    getChild<LLUICtrl>(BTN_RST_ALTITUDES)->setEnabled(can_enable && isRegion());
+    getChild<LLUICtrl>(PNL_ENVIRONMENT_ALTITUDES)->setEnabled(can_enable);
+    getChild<LLUICtrl>(CHK_ALLOWOVERRIDE)->setEnabled(can_enable && isRegion());
+
+    for (U32 idx = 0; idx < ALTITUDE_MARKERS_COUNT; idx++)
+    {
+        LLUICtrl* marker = findChild<LLUICtrl>(slider_marker_base + llformat("%u", idx));
+        if (marker)
+        {
+            static LLColor4 marker_color(0.75f, 0.75f, 0.75f, 1.f);
+            marker->setColor((can_enable && isRegion()) ? marker_color : marker_color % 0.3f);
+        }
+    }
+
+    for (U32 idx = 0; idx < ALTITUDE_PREFIXERS_COUNT; idx++)
+    {
+        LLSettingsDropTarget* drop_target = findChild<LLSettingsDropTarget>("sdt_" + alt_prefixes[idx]);
+        if (drop_target)
+        {
+            drop_target->setDndEnabled(can_enable);
+        }
+    }
+
+    return true;
+}
+
+void LLPanelEnvironmentInfo::setDirtyFlag(U32 flag)
+{
+    mDirtyFlag |= flag;
+}
+
+void LLPanelEnvironmentInfo::clearDirtyFlag(U32 flag)
+{
+    mDirtyFlag &= ~flag;
+}
+
+void LLPanelEnvironmentInfo::updateAltLabel(const std::string &alt_prefix, U32 sky_index, F32 alt_value)
+{
+    LLMultiSliderCtrl *sld = findChild<LLMultiSliderCtrl>(SLD_ALTITUDES);
+    if (!sld)
+    {
+        LL_WARNS() << "Failed to find slider " << SLD_ALTITUDES << LL_ENDL;
+        return;
+    }
+    LLRect sld_rect = sld->getRect();
+    S32 sld_range = sld_rect.getHeight();
+    S32 sld_bottom = sld_rect.mBottom;
+    S32 sld_offset = sld_rect.getWidth(); // Roughly identical to thumb's width in slider.
+    S32 pos = (sld_range - sld_offset) * ((alt_value - 100) / (4000 - 100));
+
+    // get related views
+    LLTextBox* text = findChild<LLTextBox>("txt_" + alt_prefix);
+    LLLineEditor *field = findChild<LLLineEditor>("edt_invname_" + alt_prefix);
+    LLView *alt_panel = findChild<LLView>("pnl_" + alt_prefix);
+
+    if (text && (sky_index > 1))
+    {
+        // update text
+        std::ostringstream convert;
+        convert << alt_value;
+        text->setTextArg("[ALTITUDE]", convert.str());
+        convert.str("");
+        convert.clear();
+        convert << sky_index;
+        text->setTextArg("[INDEX]", convert.str());
+    }
+
+    if (field)
+    {
+        field->setText(getNameForTrackIndex(sky_index));
+    }
+
+    if (alt_panel && (sky_index > 1))
+    {
+        // move containing panel
+        LLRect rect = alt_panel->getRect();
+        S32 height = rect.getHeight();
+        rect.mBottom = sld_bottom + (sld_offset / 2 + 1) + pos - (height / 2);
+        rect.mTop = rect.mBottom + height;
+        alt_panel->setRect(rect);
+    }
+
+}
+
+void LLPanelEnvironmentInfo::readjustAltLabels()
+{
+    // Re-adjust all labels
+    // Very simple "adjust after the fact" method
+    // Note: labels can be in any order
+
+    LLMultiSliderCtrl *sld = findChild<LLMultiSliderCtrl>(SLD_ALTITUDES);
+    if (!sld) return;
+
+    LLView* view_midle = NULL;
+    U32 midle_ind = 0;
+    S32 shift_up = 0;
+    S32 shift_down = 0;
+    LLRect sld_rect = sld->getRect();
+
+    // Find the middle one
+    for (U32 i = 0; i < ALTITUDE_SLIDER_COUNT; i++)
+    {
+        LLView* cmp_view = findChild<LLView>(alt_panels[i], true);
+        if (!cmp_view) return;
+        LLRect cmp_rect = cmp_view->getRect();
+        S32 pos = 0;
+        shift_up = 0;
+        shift_down = 0;
+
+        for (U32 j = 0; j < ALTITUDE_SLIDER_COUNT; j++)
+        {
+            if (i != j)
+            {
+                LLView* intr_view = findChild<LLView>(alt_panels[j], true);
+                if (!intr_view) return;
+                LLRect intr_rect = intr_view->getRect();
+                if (cmp_rect.mBottom >= intr_rect.mBottom)
+                {
+                    pos++;
+                }
+                if (intr_rect.mBottom <= cmp_rect.mTop && intr_rect.mBottom >= cmp_rect.mBottom)
+                {
+                    shift_up = cmp_rect.mTop - intr_rect.mBottom;
+                }
+                else if (intr_rect.mTop >= cmp_rect.mBottom && intr_rect.mBottom <= cmp_rect.mBottom)
+                {
+                    shift_down = cmp_rect.mBottom - intr_rect.mTop;
+                }
+            }
+        }
+        if (pos == 1) //  middle
+        {
+            view_midle = cmp_view;
+            midle_ind = i;
+            break;
+        }
+    }
+
+    // Account for edges
+    LLRect midle_rect = view_midle->getRect();
+    F32 factor = 0.5f;
+    S32 edge_zone_height = midle_rect.getHeight() * 1.5f;
+
+    if (midle_rect.mBottom - sld_rect.mBottom < edge_zone_height)
+    {
+        factor = 1 - ((midle_rect.mBottom - sld_rect.mBottom) / (edge_zone_height * 2));
+    }
+    else if (sld_rect.mTop - midle_rect.mTop < edge_zone_height )
+    {
+        factor = ((sld_rect.mTop - midle_rect.mTop) / (edge_zone_height * 2));
+    }
+
+    S32 shift_middle = (S32)(((F32)shift_down * factor) + ((F32)shift_up * (1.f - factor)));
+    shift_down = shift_down - shift_middle;
+    shift_up = shift_up - shift_middle;
+
+    // fix crossings
+    for (U32 i = 0; i < ALTITUDE_SLIDER_COUNT; i++)
+    {
+        if (i != midle_ind)
+        {
+            LLView* trn_view = findChild<LLView>(alt_panels[i], true);
+            LLRect trn_rect = trn_view->getRect();
+
+            if (trn_rect.mBottom <= midle_rect.mTop && trn_rect.mBottom >= midle_rect.mBottom)
+            {
+                // Approximate shift
+                trn_rect.translate(0, shift_up);
+                trn_view->setRect(trn_rect);
+            }
+            else if (trn_rect.mTop >= midle_rect.mBottom && trn_rect.mBottom <= midle_rect.mBottom)
+            {
+                // Approximate shift
+                trn_rect.translate(0, shift_down);
+                trn_view->setRect(trn_rect);
+            }
+        }
+    }
+
+    if (shift_middle != 0)
+    {
+        midle_rect.translate(0, -shift_middle); //reversed relative to others
+        view_midle->setRect(midle_rect);
+    }
+}
+
+void LLPanelEnvironmentInfo::onSldDayLengthChanged(F32 value)
+{
+    if (mCurrentEnvironment)
+    {
+        F32Hours daylength(value);
+
+        mCurrentEnvironment->mDayLength = daylength;
+        setDirtyFlag(DIRTY_FLAG_DAYLENGTH);
+
+        udpateApparentTimeOfDay();
+    }
+}
+
+void LLPanelEnvironmentInfo::onSldDayOffsetChanged(F32 value)
+{
+    if (mCurrentEnvironment)
+    {
+        F32Hours dayoffset(value);
+
+        if (dayoffset.value() <= 0.0f)
+            dayoffset += F32Hours(24.0);
+
+        mCurrentEnvironment->mDayOffset = dayoffset;
+        setDirtyFlag(DIRTY_FLAG_DAYOFFSET);
+
+        udpateApparentTimeOfDay();
+    }
+}
+
+void LLPanelEnvironmentInfo::onDayLenOffsetMouseUp()
+{
+    commitDayLenOffsetChanges(true);
+}
+
+void LLPanelEnvironmentInfo::commitDayLenOffsetChanges(bool need_callback)
+{
+    if (mCurrentEnvironment && (getDirtyFlag() & (DIRTY_FLAG_DAYLENGTH | DIRTY_FLAG_DAYOFFSET)))
+    {
+        clearDirtyFlag(DIRTY_FLAG_DAYOFFSET);
+        clearDirtyFlag(DIRTY_FLAG_DAYLENGTH);
+
+        LLHandle<LLPanel> that_h = getHandle();
+
+        if (need_callback)
+        {
+            LLEnvironment::instance().updateParcel(getParcelId(),
+                                                   LLSettingsDay::ptr_t(),
+                                                   mCurrentEnvironment->mDayLength.value(),
+                                                   mCurrentEnvironment->mDayOffset.value(),
+                                                   LLEnvironment::altitudes_vect_t(),
+                                                   [that_h](S32 parcel_id, LLEnvironment::EnvironmentInfo::ptr_t envifo) { _onEnvironmentReceived(that_h, parcel_id, envifo); });
+        }
+        else
+        {
+            LLEnvironment::instance().updateParcel(getParcelId(),
+                                                   LLSettingsDay::ptr_t(),
+                                                   mCurrentEnvironment->mDayLength.value(),
+                                                   mCurrentEnvironment->mDayOffset.value(),
+                                                   LLEnvironment::altitudes_vect_t());
+        }
+
+    }
+}
+
+void LLPanelEnvironmentInfo::onAltSliderCallback(LLUICtrl *cntrl, const LLSD &data)
+{
+    LLMultiSliderCtrl *sld = (LLMultiSliderCtrl *)cntrl;
+    std::string sld_name = sld->getCurSlider();
+
+    if (sld_name.empty()) return;
+
+    F32 sld_value = sld->getCurSliderValue();
+
+    mAltitudes[sld_name].mAltitude = sld_value;
+
+    // update all labels since we could have jumped multiple and we will need to readjust
+    // (or sort by altitude, too little elements, so I didn't bother with efficiency)
+    altitudes_data_t::iterator end = mAltitudes.end();
+    altitudes_data_t::iterator iter = mAltitudes.begin();
+    altitudes_data_t::iterator iter2;
+    U32 new_index;
+    while (iter != end)
+    {
+        iter2 = mAltitudes.begin();
+        new_index = 2;
+        while (iter2 != end)
+        {
+            if (iter->second.mAltitude > iter2->second.mAltitude)
+            {
+                new_index++;
+            }
+            iter2++;
+        }
+        iter->second.mTrackIndex = new_index;
+
+        updateAltLabel(alt_prefixes[iter->second.mLabelIndex], iter->second.mTrackIndex, iter->second.mAltitude);
+        iter++;
+    }
+
+    readjustAltLabels();
+    setDirtyFlag(DIRTY_FLAG_ALTITUDES);
+}
+
+void LLPanelEnvironmentInfo::onAltSliderMouseUp()
+{
+    if (isRegion() && (getDirtyFlag() & DIRTY_FLAG_ALTITUDES))
+    {
+        clearDirtyFlag(DIRTY_FLAG_ALTITUDES);
+        clearDirtyFlag(DIRTY_FLAG_DAYLENGTH);
+        clearDirtyFlag(DIRTY_FLAG_DAYOFFSET);
+
+        LLHandle<LLPanel> that_h = getHandle();
+        LLEnvironment::altitudes_vect_t alts;
+
+        for (auto alt : mAltitudes)
+        {
+            alts.push_back(alt.second.mAltitude);
+        }
+        setControlsEnabled(false);
+        LLEnvironment::instance().updateParcel(getParcelId(),
+                                               LLSettingsDay::ptr_t(),
+                                               mCurrentEnvironment ? mCurrentEnvironment->mDayLength.value() : -1,
+                                               mCurrentEnvironment ? mCurrentEnvironment->mDayOffset.value() : -1,
+                                               alts);
+    }
+}
+
+void LLPanelEnvironmentInfo::onBtnDefault()
+{
+    LLHandle<LLPanel> that_h = getHandle();
+    S32 parcel_id = getParcelId();
+    LLNotificationsUtil::add("SettingsConfirmReset", LLSD(), LLSD(),
+        [that_h, parcel_id](const LLSD&notif, const LLSD&resp)
+    {
+        S32 opt = LLNotificationsUtil::getSelectedOption(notif, resp);
+        if (opt == 0)
+        {
+            LLEnvironment::instance().resetParcel(parcel_id,
+                [that_h](S32 parcel_id, LLEnvironment::EnvironmentInfo::ptr_t envifo) { _onEnvironmentReceived(that_h, parcel_id, envifo); });
+        }
+    });
+}
+
+void LLPanelEnvironmentInfo::onBtnEdit()
+{
+    static const S32 FOURHOURS(4 * 60 * 60);
+
+    LLFloaterEditExtDayCycle *dayeditor = getEditFloater();
+
+    LLSD params(LLSDMap(LLFloaterEditExtDayCycle::KEY_EDIT_CONTEXT, isRegion() ? LLFloaterEditExtDayCycle::VALUE_CONTEXT_REGION : LLFloaterEditExtDayCycle::VALUE_CONTEXT_PARCEL)
+            (LLFloaterEditExtDayCycle::KEY_DAY_LENGTH,  mCurrentEnvironment ? (S32)(mCurrentEnvironment->mDayLength.value()) : FOURHOURS)
+            (LLFloaterEditExtDayCycle::KEY_CANMOD,      LLSD::Boolean(true)));
+
+    dayeditor->openFloater(params);
+    if (mCurrentEnvironment && mCurrentEnvironment->mDayCycle)
+    {
+        dayeditor->setEditDayCycle(mCurrentEnvironment->mDayCycle);
+        if (!ends_with(mCurrentEnvironment->mDayCycle->getName(), "(customized)"))
+        {
+            dayeditor->setEditName(mCurrentEnvironment->mDayCycle->getName() + "(customized)");
+        }
+    }
+    else
+        dayeditor->setEditDefaultDayCycle();
+}
+
+void LLPanelEnvironmentInfo::onBtnSelect()
+{
+    LLFloaterSettingsPicker *picker = getSettingsPicker();
+    if (picker)
+    {
+        LLUUID item_id;
+        if (mCurrentEnvironment && mCurrentEnvironment->mDayCycle)
+        {
+            item_id = LLFloaterSettingsPicker::findItemID(mCurrentEnvironment->mDayCycle->getAssetId(), false, false);
+        }
+        picker->setSettingsFilter(LLSettingsType::ST_NONE);
+        picker->setSettingsItemId(item_id);
+        picker->openFloater();
+        picker->setFocus(TRUE);
+    }
+}
+
+void LLPanelEnvironmentInfo::onBtnRstAltitudes()
+{
+    if (isRegion())
+    {
+        LLHandle<LLPanel> that_h = getHandle();
+        LLEnvironment::altitudes_vect_t alts;
+
+        clearDirtyFlag(DIRTY_FLAG_ALTITUDES);
+        clearDirtyFlag(DIRTY_FLAG_DAYLENGTH);
+        clearDirtyFlag(DIRTY_FLAG_DAYOFFSET);
+
+        for (S32 idx = 1; idx <= ALTITUDE_SLIDER_COUNT; ++idx)
+        {
+            F32 new_height = idx * ALTITUDE_DEFAULT_HEIGHT_STEP;
+            alts.push_back(new_height);
+        }
+
+        LLEnvironment::instance().updateParcel(getParcelId(),
+                                               LLSettingsDay::ptr_t(),
+                                               mCurrentEnvironment ? mCurrentEnvironment->mDayLength.value() : -1,
+                                               mCurrentEnvironment ? mCurrentEnvironment->mDayOffset.value() : -1,
+                                               alts,
+            [that_h](S32 parcel_id, LLEnvironment::EnvironmentInfo::ptr_t envifo) { _onEnvironmentReceived(that_h, parcel_id, envifo); });
+    }
+}
+
+void LLPanelEnvironmentInfo::udpateApparentTimeOfDay()
+{
+    static const F32 SECONDSINDAY(24.0 * 60.0 * 60.0);
+
+    if ((!mCurrentEnvironment) || (mCurrentEnvironment->mDayLength.value() < 1.0) || (mCurrentEnvironment->mDayOffset.value() < 1.0))
+    {
+        getChild<LLUICtrl>(LBL_TIMEOFDAY)->setVisible(false);
+        return;
+    }
+    getChild<LLUICtrl>(LBL_TIMEOFDAY)->setVisible(true);
+
+    S32Seconds  now(LLDate::now().secondsSinceEpoch());
+
+    now += mCurrentEnvironment->mDayOffset;
+
+    F32 perc = (F32)(now.value() % mCurrentEnvironment->mDayLength.value()) / (F32)(mCurrentEnvironment->mDayLength.value());
+
+    S32Seconds  secondofday((S32)(perc * SECONDSINDAY));
+    S32Hours    hourofday(secondofday);
+    S32Seconds  secondofhour(secondofday - hourofday);
+    S32Minutes  minutesofhour(secondofhour);
+    bool        am_pm(hourofday.value() >= 12);
+
+    if (hourofday.value() < 1)
+        hourofday = S32Hours(12);
+    if (hourofday.value() > 12)
+        hourofday -= S32Hours(12);
+
+    std::string lblminute(((minutesofhour.value() < 10) ? "0" : "") + LLSD(minutesofhour.value()).asString());
+
+
+    getChild<LLUICtrl>(LBL_TIMEOFDAY)->setTextArg("[HH]", LLSD(hourofday.value()).asString());
+    getChild<LLUICtrl>(LBL_TIMEOFDAY)->setTextArg("[MM]", lblminute);
+    getChild<LLUICtrl>(LBL_TIMEOFDAY)->setTextArg("[AP]", std::string(am_pm ? "PM" : "AM"));
+    getChild<LLUICtrl>(LBL_TIMEOFDAY)->setTextArg("[PRC]", LLSD((S32)(100 * perc)).asString());
+
+}
+
+void LLPanelEnvironmentInfo::onIdlePlay(void *data)
+{
+    ((LLPanelEnvironmentInfo *)data)->udpateApparentTimeOfDay();
+}
+
+
+void LLPanelEnvironmentInfo::onPickerCommitted(LLUUID item_id, std::string source)
+{
+    if (source == alt_prefixes[4])
+    {
+        onPickerCommitted(item_id, 0);
+    }
+    else if (source == alt_prefixes[3])
+    {
+        onPickerCommitted(item_id, 1);
+    }
+    else
+    {
+        onPickerCommitted(item_id, mAltitudes[source].mTrackIndex);
+    }
+}
+
+void LLPanelEnvironmentInfo::onPickerCommitted(LLUUID item_id, S32 track_num)
+{
+    LLInventoryItem *itemp = gInventory.getItem(item_id);
+    if (itemp)
+    {
+        LLHandle<LLPanel> that_h = getHandle();
+        clearDirtyFlag(DIRTY_FLAG_DAYLENGTH);
+        clearDirtyFlag(DIRTY_FLAG_DAYOFFSET);
+
+        U32 flags(0);
+
+        if (itemp)
+        {
+            if (!itemp->getPermissions().allowOperationBy(PERM_MODIFY, gAgent.getID()))
+                flags |= LLSettingsBase::FLAG_NOMOD;
+            if (!itemp->getPermissions().allowOperationBy(PERM_TRANSFER, gAgent.getID()))
+                flags |= LLSettingsBase::FLAG_NOTRANS;
+        }
+
+        LLEnvironment::instance().updateParcel(getParcelId(),
+                                               itemp->getAssetUUID(),
+                                               itemp->getName(),
+                                               track_num,
+                                               mCurrentEnvironment ? mCurrentEnvironment->mDayLength.value() : -1,
+                                               mCurrentEnvironment ? mCurrentEnvironment->mDayOffset.value() : -1,
+                                               flags,
+                                               LLEnvironment::altitudes_vect_t(),
+            [that_h](S32 parcel_id, LLEnvironment::EnvironmentInfo::ptr_t envifo) { _onEnvironmentReceived(that_h, parcel_id, envifo); });
+    }
+}
+
+void LLPanelEnvironmentInfo::onEditCommitted(LLSettingsDay::ptr_t newday)
+{
+    LLEnvironment::instance().clearEnvironment(LLEnvironment::ENV_EDIT);
+    LLEnvironment::instance().updateEnvironment();
+    if (!newday)
+    {
+        LL_WARNS("ENVPANEL") << "Editor committed an empty day. Do nothing." << LL_ENDL;
+        return;
+    }
+    if (!mCurrentEnvironment)
+    {
+        // Attempting to save mid update?
+        LL_WARNS("ENVPANEL") << "Failed to apply changes from editor! Dirty state: " << mDirtyFlag << " env version: " << mCurEnvVersion << LL_ENDL;
+        return;
+    }
+    size_t newhash(newday->getHash());
+    size_t oldhash((mCurrentEnvironment->mDayCycle) ? mCurrentEnvironment->mDayCycle->getHash() : 0);
+
+    if (newhash != oldhash)
+    {
+        LLHandle<LLPanel> that_h = getHandle();
+        clearDirtyFlag(DIRTY_FLAG_DAYLENGTH);
+        clearDirtyFlag(DIRTY_FLAG_DAYOFFSET);
+
+        LLEnvironment::instance().updateParcel(getParcelId(),
+                                               newday,
+                                               mCurrentEnvironment ? mCurrentEnvironment->mDayLength.value() : -1,
+                                               mCurrentEnvironment ? mCurrentEnvironment->mDayOffset.value() : -1,
+                                               LLEnvironment::altitudes_vect_t(),
+            [that_h](S32 parcel_id, LLEnvironment::EnvironmentInfo::ptr_t envifo) { _onEnvironmentReceived(that_h, parcel_id, envifo); });
+    }
+}
+
+void LLPanelEnvironmentInfo::onEnvironmentChanged(LLEnvironment::EnvSelection_t env, S32 new_version)
+{
+    if (new_version < INVALID_PARCEL_ENVIRONMENT_VERSION)
+    {
+        // cleanups and local changes, we are only interested in changes sent by server
+        return;
+    }
+
+    LL_DEBUGS("ENVPANEL") << "Received environment update " << mCurEnvVersion << " " << new_version << LL_ENDL;
+
+    // Environment comes from different sources, from environment update callbacks,
+    // from hovers (causes callbacks on version change) and from personal requests
+    // filter out duplicates and out of order packets by checking parcel environment version.
+
+    if (isRegion())
+    {
+        // Note: region uses same init versions as parcel
+        if (env == LLEnvironment::ENV_REGION
+            // version should be always growing, UNSET_PARCEL_ENVIRONMENT_VERSION is backup case
+            && (mCurEnvVersion < new_version || mCurEnvVersion <= UNSET_PARCEL_ENVIRONMENT_VERSION))
+        {
+            if (new_version >= UNSET_PARCEL_ENVIRONMENT_VERSION)
+            {
+                // 'pending state' to prevent re-request on following onEnvironmentChanged if there will be any
+                mCurEnvVersion = new_version;
+            }
+            mCurrentEnvironment.reset();
+            refreshFromSource();
+        }
+    }
+    else if ((env == LLEnvironment::ENV_PARCEL)
+             && (getParcelId() == LLViewerParcelMgr::instance().getAgentParcelId()))
+    {
+        LLParcel *parcel = getParcel();
+        if (parcel)
+        {
+            // first for parcel own settings, second is for case when parcel uses region settings
+            if (mCurEnvVersion < new_version
+                || (mCurEnvVersion != new_version && new_version == UNSET_PARCEL_ENVIRONMENT_VERSION))
+            {
+                // 'pending state' to prevent re-request on following onEnvironmentChanged if there will be any
+                mCurEnvVersion = new_version;
+                mCurrentEnvironment.reset();
+
+                refreshFromSource();
+            }
+            else if (mCurrentEnvironment)
+            {
+                // update controls
+                refresh();
+            }
+        }
+    }
+}
+
+
+void LLPanelEnvironmentInfo::onPickerAssetDownloaded(LLSettingsBase::ptr_t settings)
+{
+    LLSettingsVODay::buildFromOtherSetting(settings, [this](LLSettingsDay::ptr_t pday)
+        {
+            if (pday)
+            {
+                mCurrentEnvironment->mDayCycle = pday;
+                setDirtyFlag(DIRTY_FLAG_DAYCYCLE);
+            }
+            refresh();
+        });
+}
+
+void LLPanelEnvironmentInfo::onEnvironmentReceived(S32 parcel_id, LLEnvironment::EnvironmentInfo::ptr_t envifo)
+{
+    if (parcel_id != getParcelId())
+    {
+        LL_WARNS("ENVPANEL") << "Have environment for parcel " << parcel_id << " expecting " << getParcelId() << ". Discarding." << LL_ENDL;
+        return;
+    }
+    mCurrentEnvironment = envifo;
+    clearDirtyFlag(DIRTY_FLAG_MASK);
+    if (mCurrentEnvironment->mEnvVersion > INVALID_PARCEL_ENVIRONMENT_VERSION)
+    {
+        // Server provided version, use it
+        mCurEnvVersion = mCurrentEnvironment->mEnvVersion;
+        LL_DEBUGS("ENVPANEL") << " Setting environment version: " << mCurEnvVersion << " for parcel id: " << parcel_id << LL_ENDL;
+    }
+    // Backup: Version was not provided for some reason
+    else
+    {
+        LL_WARNS("ENVPANEL") << " Environment version was not provided for " << parcel_id << ", old env version: " << mCurEnvVersion << LL_ENDL;
+    }
+
+    refreshFromEstate();
+    refresh();
+
+    // todo: we have envifo and parcel env version, should we just setEnvironment() and parcel's property to prevent dupplicate requests?
+}
+
+void LLPanelEnvironmentInfo::_onEnvironmentReceived(LLHandle<LLPanel> that_h, S32 parcel_id, LLEnvironment::EnvironmentInfo::ptr_t envifo)
+{
+    LLPanelEnvironmentInfo *that = (LLPanelEnvironmentInfo *)that_h.get();
+    if (!that)
+        return;
+    that->onEnvironmentReceived(parcel_id, envifo);
+}
+
+LLSettingsDropTarget::LLSettingsDropTarget(const LLSettingsDropTarget::Params& p)
+    : LLView(p), mEnvironmentInfoPanel(NULL), mDndEnabled(false)
+{}
+
+BOOL LLSettingsDropTarget::handleDragAndDrop(S32 x, S32 y, MASK mask, BOOL drop,
+	EDragAndDropType cargo_type,
+	void* cargo_data,
+	EAcceptance* accept,
+	std::string& tooltip_msg)
+{
+    BOOL handled = FALSE;
+
+    if (getParent() && mDndEnabled)
+    {
+        handled = TRUE;
+
+        switch (cargo_type)
+        {
+        case DAD_SETTINGS:
+        {
+            LLViewerInventoryItem* inv_item = (LLViewerInventoryItem*)cargo_data;
+            if (inv_item && mEnvironmentInfoPanel)
+            {
+                LLUUID item_id = inv_item->getUUID();
+                if (gInventory.getItem(item_id))
+                {
+                    *accept = ACCEPT_YES_COPY_SINGLE;
+                    if (drop)
+                    {
+                        // might be better to use name of the element
+                        mEnvironmentInfoPanel->onPickerCommitted(item_id, mTrack);
+                    }
+                }
+            }
+            else
+            {
+                *accept = ACCEPT_NO;
+            }
+            break;
+        }
+        default:
+            *accept = ACCEPT_NO;
+            break;
+        }
+    }
+    return handled;
+}