TouhouGD/addons/resources_spreadsheet_view/main_screen/table_pages.gd

@tool
extends HBoxContainer

@export @onready var node_editor_view_root : Control = $"../../../.."

var rows_per_page := 50
var current_page := 0
var first_row := 0
var last_row := 50


func _on_grid_updated():
    visible = true

    var page_count = (node_editor_view_root.rows.size() - 1) / rows_per_page + 1
    first_row = min(current_page, page_count) * rows_per_page
    last_row = min(first_row + rows_per_page, node_editor_view_root.rows.size())

    var pagelist_node = $"Pagelist"
    for x in pagelist_node.get_children():
        x.queue_free()
    
    var button_group = ButtonGroup.new()
    var btns = []
    btns.resize(page_count)
    for i in page_count:
        var btn = Button.new()
        btns[i] = btn
        btn.toggle_mode = true
        btn.button_group = button_group
        btn.text = str(i + 1)
        btn.pressed.connect(_on_button_pressed.bind(btn))
        pagelist_node.add_child(btn)
            
    btns[current_page].button_pressed = true

    var sort_property = node_editor_view_root.sorting_by
    if sort_property == "": sort_property = "resource_path"
    var sort_type = node_editor_view_root.column_types[node_editor_view_root.columns.find(sort_property)]
    var property_values = []
    property_values.resize(page_count)
    if(node_editor_view_root.rows.size() == 0):
        return
    for i in page_count:
        property_values[i] = node_editor_view_root.rows[i * rows_per_page].get(sort_property)

    if sort_type == TYPE_FLOAT or sort_type == TYPE_INT:
        for i in page_count:
            btns[i].text = str(property_values[i])
            
    elif sort_type == TYPE_COLOR:
        for i in page_count:
            btns[i].self_modulate = property_values[i] * 0.75 + Color(0.25, 0.25, 0.25, 1.0)
    
    elif sort_type == TYPE_STRING:
        var strings = []
        strings.resize(page_count)
        for i in page_count:
            strings[i] = property_values[i].get_file()
            if strings[i] == "":
                strings[i] = str(i)
            
        _fill_buttons_with_prefixes(btns, strings, page_count)
    
    elif sort_type == TYPE_OBJECT:
        var strings = []
        strings.resize(page_count + 1)
        for i in page_count:
            if is_instance_valid(property_values[i]):
                strings[i] = property_values[i].resource_path.get_file()
        
        _fill_buttons_with_prefixes(btns, strings, page_count)


func _fill_buttons_with_prefixes(btns, strings, page_count):
    for i in page_count:
        if i == 0:
            btns[0].text = strings[0][0]
            continue

        for j in strings[i].length():
            if strings[i].unicode_at(j) != strings[i - 1].unicode_at(j):
                btns[i].text = strings[i].left(j + 1)
                btns[i - 1].text = strings[i - 1].left(max(j + 1, btns[i - 1].text.length()))
                break
    
    for i in page_count - 1:
        btns[i].text = btns[i].text + "-" + btns[i + 1].text

    btns[page_count - 1].text += "-[End]"


func _on_button_pressed(button):
    button.button_pressed = true
    current_page = button.get_index()
    _update_view()


func _on_LineEdit_value_changed(value):
    rows_per_page = value
    current_page = 0
    _update_view()


func _update_view():
    _on_grid_updated()
    node_editor_view_root.refresh(false)