/*
Open Tracker License

Terms and Conditions

Copyright (c) 1991-2000, Be Incorporated. All rights reserved.

Permission is hereby granted, free of charge, to any person obtaining a copy of
this software and associated documentation files (the "Software"), to deal in
the Software without restriction, including without limitation the rights to
use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
of the Software, and to permit persons to whom the Software is furnished to do
so, subject to the following conditions:

The above copyright notice and this permission notice applies to all licensees
and shall be included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF TITLE, MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
BE INCORPORATED BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF, OR IN CONNECTION
WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

Except as contained in this notice, the name of Be Incorporated shall not be
used in advertising or otherwise to promote the sale, use or other dealings in
this Software without prior written authorization from Be Incorporated.

Tracker(TM), Be(R), BeOS(R), and BeIA(TM) are trademarks or registered trademarks
of Be Incorporated in the United States and other countries. Other brand product
names are registered trademarks or trademarks of their respective holders.
All rights reserved.
*/

// defines the status area drawn in the bottom left corner of a Tracker window


#include "CountView.h"

#include <Application.h>
#include <Catalog.h>
#include <ControlLook.h>
#include <Locale.h>
#include <StringFormat.h>

#include "AutoLock.h"
#include "Bitmaps.h"
#include "ContainerWindow.h"
#include "DirMenu.h"
#include "PoseView.h"
#include "Utilities.h"


#undef B_TRANSLATION_CONTEXT
#define B_TRANSLATION_CONTEXT "CountView"


const bigtime_t kBarberPoleDelay = 500000;
static const float kMinFontSize = 8.0f;


//      #pragma mark - BCountView


BCountView::BCountView(BPoseView* view)
        :
        BView("CountVw", B_PULSE_NEEDED | B_WILL_DRAW),
        fLastCount(-1),
        fLastCountSelected(-1),
        fPoseView(view),
        fShowingBarberPole(false),
        fBarberPoleMap(NULL),
        fLastBarberPoleOffset(5),
        fStartSpinningAfter(0),
        fTypeAheadString(""),
        fFilterString("")
{
        GetTrackerResources()->GetBitmapResource(B_MESSAGE_TYPE, R_BarberPoleBitmap, &fBarberPoleMap);

        SetFont(be_plain_font);
        SetFontSize(std::max(kMinFontSize, ceilf(be_plain_font->Size() * 0.75f)));

        SetViewUIColor(B_PANEL_BACKGROUND_COLOR);
        SetLowUIColor(ViewUIColor());
}


BCountView::~BCountView()
{
        delete fBarberPoleMap;
}


void
BCountView::TrySpinningBarberPole()
{
        if (!fShowingBarberPole)
                return;

        if (fStartSpinningAfter && system_time() < fStartSpinningAfter)
                return;

        // When the barber pole just starts spinning we need to invalidate
        // the whole rectangle of text and barber pole.
        // After this the text needs no updating since only the pole changes.
        if (fStartSpinningAfter) {
                fStartSpinningAfter = 0;
                Invalidate(TextAndBarberPoleRect());
        } else
                Invalidate(BarberPoleInnerRect());
}


void
BCountView::Pulse()
{
        TrySpinningBarberPole();
}


void
BCountView::EndBarberPole()
{
        if (!fShowingBarberPole)
                return;

        fShowingBarberPole = false;
        Invalidate();
}


void
BCountView::StartBarberPole()
{
        AutoLock<BWindow> lock(Window());
        if (fShowingBarberPole)
                return;

        fShowingBarberPole = true;
        fStartSpinningAfter = system_time() + kBarberPoleDelay;
                // wait a bit before showing the barber pole
}


BRect
BCountView::BarberPoleInnerRect() const
{
        BRect result = Bounds();
        result.InsetBy(3, 4);
        result.left = result.right - 7;
        result.bottom = result.top + 7;
        return result;
}


BRect
BCountView::BarberPoleOuterRect() const
{
        BRect result(BarberPoleInnerRect());
        result.InsetBy(-1, -1);
        return result;
}


BRect
BCountView::TextInvalRect() const
{
        BRect result = TextAndBarberPoleRect();

        // if the barber pole is not present, use its space for text
        if (fShowingBarberPole)
                result.right -= 10;

        return result;
}


BRect
BCountView::TextAndBarberPoleRect() const
{
        BRect result = Bounds();
        result.InsetBy(be_control_look->ComposeSpacing(B_USE_SMALL_SPACING) / 2,
                floorf(result.Height() * 0.25f));

        return result;
}


void
BCountView::CheckCount()
{
        bool invalidate = false;

        if (fLastCount != fPoseView->CountItems()) {
                fLastCount = fPoseView->CountItems();
                invalidate = true;
        }

        if (fLastCountSelected != fPoseView->CountSelected()) {
                fLastCountSelected = fPoseView->CountSelected();
                invalidate = true;
        }

        // invalidate the count text area if necessary
        if (invalidate)
                Invalidate(TextInvalRect());

        // invalidate barber pole area if necessary
        TrySpinningBarberPole();
}


void
BCountView::Draw(BRect updateRect)
{
        BRect bounds(Bounds());

        rgb_color color = ViewColor();
        if (IsTypingAhead())
                color = ui_color(B_DOCUMENT_BACKGROUND_COLOR);

        SetLowColor(color);
        be_control_look->DrawBorder(this, bounds, updateRect,
                color, B_PLAIN_BORDER, 0,
                BControlLook::B_BOTTOM_BORDER | BControlLook::B_LEFT_BORDER);
        be_control_look->DrawMenuBarBackground(this, bounds, updateRect, color);

        BString itemString;
        if (IsTypingAhead())
                itemString << TypeAhead();
        else if (IsFiltering()) {
                BString lastCountStr;
                fNumberFormat.Format(lastCountStr, fLastCount);

                if (fLastCountSelected != 0) {
                        static BStringFormat selectedFilteredFormat(B_TRANSLATE_COMMENT(
                                "{0, plural, other{#/%total %filter}}",
                                "Number of selected items from a filtered set: \"10/30 view\""));

                        selectedFilteredFormat.Format(itemString, fLastCountSelected);
                        itemString.ReplaceFirst("%total", lastCountStr);
                        itemString.ReplaceFirst("%filter", Filter());
                } else
                        itemString << lastCountStr << " " << Filter();
        } else {
                if (fLastCount == 0)
                        itemString << B_TRANSLATE("no items");
                else if (fLastCountSelected == 0) {
                        static BStringFormat itemFormat(B_TRANSLATE_COMMENT(
                                "{0, plural, one{# item} other{# items}}",
                                "Number of selected items: \"1 item\" or \"2 items\""));
                        itemFormat.Format(itemString, fLastCount);
                } else {
                        static BStringFormat selectedFormat(B_TRANSLATE_COMMENT(
                                "{0, plural, other{#/%total selected}}",
                                "Number of selected items out of a total: \"10/30 selected\""));

                        BString lastCountStr;
                        fNumberFormat.Format(lastCountStr, fLastCount);

                        selectedFormat.Format(itemString, fLastCountSelected);
                        itemString.ReplaceFirst("%total", lastCountStr);
                }
        }

        BRect textRect(TextInvalRect());

        TruncateString(&itemString, IsTypingAhead() ? B_TRUNCATE_BEGINNING
                        : IsFiltering() ? B_TRUNCATE_MIDDLE : B_TRUNCATE_END,
                textRect.Width());

        if (IsTypingAhead()) {
                // use a muted gray for the typeahead
                SetHighUIColor(B_DOCUMENT_TEXT_COLOR);
        } else
                SetHighUIColor(B_PANEL_TEXT_COLOR);

        MovePenTo(textRect.LeftBottom());
        DrawString(itemString.String());

        bounds.top++;

        rgb_color light = tint_color(ViewColor(), B_LIGHTEN_MAX_TINT);
        rgb_color shadow = tint_color(ViewColor(), B_DARKEN_2_TINT);

        BeginLineArray(fShowingBarberPole && !fStartSpinningAfter ? 9 : 5);

        if (!fShowingBarberPole || fStartSpinningAfter) {
                EndLineArray();
                return;
        }

        BRect barberPoleRect(BarberPoleOuterRect());

        AddLine(barberPoleRect.LeftTop(), barberPoleRect.RightTop(), shadow);
        AddLine(barberPoleRect.LeftTop(), barberPoleRect.LeftBottom(), shadow);
        AddLine(barberPoleRect.LeftBottom(), barberPoleRect.RightBottom(), light);
        AddLine(barberPoleRect.RightBottom(), barberPoleRect.RightTop(), light);
        EndLineArray();

        barberPoleRect.InsetBy(1, 1);

        BRect destRect(fBarberPoleMap
                ? fBarberPoleMap->Bounds() : BRect(0, 0, 0, 0));
        destRect.OffsetTo(barberPoleRect.LeftTop()
                - BPoint(0, fLastBarberPoleOffset));
        fLastBarberPoleOffset -= 1;
        if (fLastBarberPoleOffset < 0)
                fLastBarberPoleOffset = 5;

        BRegion region;
        region.Set(BarberPoleInnerRect());
        ConstrainClippingRegion(&region);

        if (fBarberPoleMap)
                DrawBitmap(fBarberPoleMap, destRect);
}


void
BCountView::MouseDown(BPoint)
{
        BContainerWindow* window = dynamic_cast<BContainerWindow*>(Window());
        ThrowOnAssert(window != NULL);

        window->Activate();
        window->UpdateIfNeeded();

        if (fPoseView->IsFilePanel() || fPoseView->TargetModel() == NULL)
                return;

        if (window->TargetModel()->IsRoot())
                return;

        BDirMenu menu(NULL, be_app, B_REFS_RECEIVED);
        BEntry entry;
        if (entry.SetTo(window->TargetModel()->EntryRef()) == B_OK)
                menu.Populate(&entry, Window(), false, false, true, false, true);
        else
                menu.Populate(NULL, Window(), false, false, true, false, true);

        BPoint point = Bounds().LeftBottom();
        point.y += 3;
        ConvertToScreen(&point);
        BRect clickToOpenRect(Bounds());
        ConvertToScreen(&clickToOpenRect);
        menu.Go(point, true, true, clickToOpenRect);
}


void
BCountView::AttachedToWindow()
{
        CheckCount();
}


void
BCountView::SetTypeAhead(const char* string)
{
        fTypeAheadString = string;
        Invalidate();
}


const char*
BCountView::TypeAhead() const
{
        return fTypeAheadString.String();
}


bool
BCountView::IsTypingAhead() const
{
        return fTypeAheadString.Length() != 0;
}


void
BCountView::AddFilterCharacter(const char* character)
{
        fFilterString.AppendChars(character, 1);
        Invalidate();
}


void
BCountView::RemoveFilterCharacter()
{
        fFilterString.TruncateChars(fFilterString.CountChars() - 1);
        Invalidate();
}


void
BCountView::CancelFilter()
{
        fFilterString.Truncate(0);
        Invalidate();
}


const char*
BCountView::Filter() const
{
        return fFilterString.String();
}


bool
BCountView::IsFiltering() const
{
        return fFilterString.Length() > 0;
}