// Package bldr deals with Glade GTK* builder functionality.
package bldr

import (
	"fmt"

	"github.com/gotk3/gotk3/gtk"
)

// GetBuilder retrieves a named builder.
func GetBuilder(builderName string) (*gtk.Builder, error) {
	builder, err := gtk.BuilderNewFromFile(builderName)
	if err != nil {
		return nil, fmt.Errorf("GetBuilder: unable to BuilderNewFromFile: %s", err)
	}
	return builder, nil
}

// GetAboutDialog retrieves a named about dialog.
func GetAboutDialog(builder *gtk.Builder, widgetName string) (*gtk.AboutDialog, error) {
	obj, err := builder.GetObject(widgetName)
	if err != nil {
		return nil, fmt.Errorf("GetAboutDialog: unable to GetObject: '%s'", widgetName)
	}

	dialog, ok := obj.(*gtk.AboutDialog)
	if !ok {
		return nil, fmt.Errorf("GetAboutDialog: unable to GetObject: '%s'", widgetName)
	}

	return dialog, nil
}

// GetDialog retrieves a named dialog.
func GetDialog(builder *gtk.Builder, widgetName string) (*gtk.Dialog, error) {
	obj, err := builder.GetObject(widgetName)
	if err != nil {
		return nil, fmt.Errorf("GetDialog: unable to GetObject: '%s'", widgetName)
	}

	dialog, ok := obj.(*gtk.Dialog)
	if !ok {
		return nil, fmt.Errorf("GetDialog: unable to GetObject: '%s'", widgetName)
	}

	return dialog, nil
}

// GetEntry retrieves a named entry.
func GetEntry(builder *gtk.Builder, widgetName string) (*gtk.Entry, error) {
	obj, err := builder.GetObject(widgetName)
	if err != nil {
		return nil, fmt.Errorf("GetEntry: unable to GetObject: '%s'", widgetName)
	}

	entry, ok := obj.(*gtk.Entry)
	if !ok {
		return nil, fmt.Errorf("GetEntry: unable to GetObject: '%s'", widgetName)
	}

	return entry, nil
}

// GetBox retrieves a named box.
func GetBox(builder *gtk.Builder, widgetName string) (*gtk.Box, error) {
	obj, err := builder.GetObject(widgetName)
	if err != nil {
		return nil, fmt.Errorf("GetBox: unable to GetObject: '%s'", widgetName)
	}

	box, ok := obj.(*gtk.Box)
	if !ok {
		return nil, fmt.Errorf("GetBox: unable to GetObject: '%s'", widgetName)
	}

	return box, nil
}

// GetSpinner retrieves a named spinner.
func GetSpinner(builder *gtk.Builder, widgetName string) (*gtk.Spinner, error) {
	obj, err := builder.GetObject(widgetName)
	if err != nil {
		return nil, fmt.Errorf("GetSpinner: unable to GetObject: '%s'", widgetName)
	}

	spinner, ok := obj.(*gtk.Spinner)
	if !ok {
		return nil, fmt.Errorf("GetSpinner: unable to GetObject: '%s'", widgetName)
	}

	return spinner, nil
}

// GetLabel retrieves a named label.
func GetLabel(builder *gtk.Builder, widgetName string) (*gtk.Label, error) {
	obj, err := builder.GetObject(widgetName)
	if err != nil {
		return nil, fmt.Errorf("GetLabel: unable to GetObject: '%s'", widgetName)
	}

	label, ok := obj.(*gtk.Label)
	if !ok {
		return nil, fmt.Errorf("GetLabel: unable to GetObject: '%s'", widgetName)
	}

	return label, nil
}

// GetWindow retrieves a named window.
func GetWindow(builder *gtk.Builder, widgetName string) (*gtk.Window, error) {
	obj, err := builder.GetObject(widgetName)
	if err != nil {
		return nil, fmt.Errorf("GetWindow: unable to GetObject: '%s'", widgetName)
	}

	window, ok := obj.(*gtk.Window)
	if !ok {
		return nil, fmt.Errorf("GetWindow: unable to GetObject: '%s'", widgetName)
	}

	return window, nil
}

// GetButton retrieves a named button.
func GetButton(builder *gtk.Builder, widgetName string) (*gtk.Button, error) {
	obj, err := builder.GetObject(widgetName)
	if err != nil {
		return nil, fmt.Errorf("GetButton: unable to GetObject: '%s'", widgetName)
	}

	button, ok := obj.(*gtk.Button)
	if !ok {
		return nil, fmt.Errorf("GetButton: unable to GetObject: '%s'", widgetName)
	}

	return button, nil
}

// GetSeparator retrieves a named seperator.
func GetSeparator(builder *gtk.Builder, widgetName string) (*gtk.Separator, error) {
	obj, err := builder.GetObject(widgetName)
	if err != nil {
		return nil, fmt.Errorf("GetSeparator: unable to GetObject: '%s'", widgetName)
	}

	sep, ok := obj.(*gtk.Separator)
	if !ok {
		return nil, fmt.Errorf("GetSeparator: unable to GetObject: '%s'", widgetName)
	}

	return sep, nil
}

// GetHeaderBar retrieves a named header bar.
func GetHeaderBar(builder *gtk.Builder, widgetName string) (*gtk.HeaderBar, error) {
	obj, err := builder.GetObject(widgetName)
	if err != nil {
		return nil, fmt.Errorf("GetHeaderBar: unable to GetObject: '%s'", widgetName)
	}

	headerBar, ok := obj.(*gtk.HeaderBar)
	if !ok {
		return nil, fmt.Errorf("GetHeaderBar: unable to GetObject: '%s'", widgetName)
	}

	return headerBar, nil
}

// GetMenu retrieves a named menu.
func GetMenu(builder *gtk.Builder, widgetName string) (*gtk.Menu, error) {
	obj, err := builder.GetObject(widgetName)
	if err != nil {
		return nil, fmt.Errorf("GetMenu: unable to GetObject: '%s'", widgetName)
	}

	menu, ok := obj.(*gtk.Menu)
	if !ok {
		return nil, fmt.Errorf("GetMenu: unable to GetObject: '%s'", widgetName)
	}

	return menu, nil
}