/*
 * Copyright 2004-2009 Haiku, Inc. All rights reserved.
 * Distributed under the terms of the MIT License.
 *
 * Authors:
 *              Jérôme Duval
 */


#include "DirectoryFilePanel.h"

#include <Catalog.h>
#include <Locale.h>
#include <Window.h>

#include <stdio.h>
#include <stdlib.h>
#include <string.h>

#include <compat/sys/stat.h>


DirectoryRefFilter::DirectoryRefFilter()
{
}


bool
DirectoryRefFilter::Filter(const entry_ref* ref, BNode* node,
        struct stat_beos* stat, const char* mimeType)
{
        if (S_ISDIR(stat->st_mode))
                return true;

        if (S_ISLNK(stat->st_mode)) {
                // Traverse symlinks
                BEntry entry(ref, true);
                return entry.IsDirectory();
        }

        return false;
}


//      #pragma mark - DirectoryFilePanel


#undef B_TRANSLATION_CONTEXT
#define B_TRANSLATION_CONTEXT "DirectoryFilePanel"


DirectoryFilePanel::DirectoryFilePanel(file_panel_mode mode,
        BMessenger* target, const entry_ref* startDirectory, uint32 nodeFlavors,
        bool allowMultipleSelection, BMessage* message, BRefFilter* filter,
        bool modal, bool hideWhenDone)
        :
        BFilePanel(mode, target, startDirectory, nodeFlavors,
                allowMultipleSelection, message, filter, modal, hideWhenDone),
        fCurrentButton(NULL)
{
}


void
DirectoryFilePanel::Show()
{
        if (fCurrentButton == NULL && Window()->Lock()) {
                BView* background = Window()->ChildAt(0);
                BView* cancel = background->FindView("cancel button");

                BRect rect;
                if (cancel != NULL)
                        rect = cancel->Frame();
                else {
                        rect = background->Bounds();
                        rect.left = rect.right;
                        rect.top = rect.bottom - 35;
                        rect.bottom -= 10;
                }

                rect.right = rect.left -= 30;
                float width = be_plain_font->StringWidth(
                        B_TRANSLATE("Select current")) + 20;
                rect.left = width > 75 ? rect.right - width : rect.right - 75;
                fCurrentButton = new BButton(rect, "directoryButton",
                        B_TRANSLATE("Select current"), new BMessage(MSG_DIRECTORY),
                        B_FOLLOW_RIGHT | B_FOLLOW_BOTTOM);

                background->AddChild(fCurrentButton);
                fCurrentButton->SetTarget(Messenger());

                SetButtonLabel(B_DEFAULT_BUTTON, B_TRANSLATE("Select"));

                BString title(B_TRANSLATE("%appname%: Choose destination"));
                title.ReplaceFirst("%appname%", B_TRANSLATE_SYSTEM_NAME("Expander"));
                Window()->SetTitle(title);

                Window()->Unlock();

                SelectionChanged();
        }

        BFilePanel::Show();
}


void
DirectoryFilePanel::SelectionChanged()
{
        // Resize button so that the label fits
        // maximum width is dictated by the window's size limits

        if (Window()->Lock()) {
                float dummy;
                float maxWidth;
                Window()->GetSizeLimits(&maxWidth, &dummy, &dummy, &dummy);
                maxWidth -= Window()->Bounds().Width() + 8
                        - fCurrentButton->Frame().right;

                BRect oldBounds = fCurrentButton->Bounds();

                char* label;
                entry_ref ref;
                GetPanelDirectory(&ref);
                if (asprintf(&label, B_TRANSLATE("Select '%s'" B_UTF8_ELLIPSIS),
                                ref.name) != -1) {
                        fCurrentButton->SetLabel(label);
                        free(label);
                }

                float width;
                float height;
                fCurrentButton->GetPreferredSize(&width, &height);
                if (width > maxWidth)
                        width = maxWidth;

                fCurrentButton->ResizeTo(width, oldBounds.Height());
                fCurrentButton->MoveBy(oldBounds.Width() - width, 0);

                Window()->Unlock();
        }

        BFilePanel::SelectionChanged();
}