#include "TextBox.h"
#include "../../Minecraft.h"
#include "../../../AppPlatform.h"
#include "platform/input/Mouse.h"

TextBox::TextBox( int id, const std::string& msg )
 : TextBox(id, 0, 0, msg) {}

TextBox::TextBox( int id, int x, int y, const std::string& msg ) 
 : TextBox(id, x, y, 24, msg) {}

TextBox::TextBox( int id, int x, int y, int w, const std::string& msg )
 : GuiElement(true, true, x, y, w, Font::DefaultLineHeight + 4), 
 id(id), hint(msg), focused(false), blink(false) {}

void TextBox::setFocus(Minecraft* minecraft) {
	if(!focused) {
		minecraft->platform()->showKeyboard();
		focused = true;

		blinkTicks = 0;
		blink = false;
	}
}

bool TextBox::loseFocus(Minecraft* minecraft) {
	if(focused) {
		minecraft->platform()->showKeyboard();
		focused = false;
		return true;
	}
	return false;
}

void TextBox::mouseClicked(Minecraft* minecraft, int x, int y, int buttonNum) {
	if (buttonNum == MouseAction::ACTION_LEFT) {
		if (pointInside(x, y)) {
			setFocus(minecraft);
		} else {
			loseFocus(minecraft);
		}
	}
}

void TextBox::handleChar(char c) {
	if (focused) {
		text.push_back(c);
	}
}

void TextBox::handleKey(int key) {
	if (focused && key == Keyboard::KEY_BACKSPACE && !text.empty()) {
		text.pop_back();
	}
}

void TextBox::tick(Minecraft* minecraft) {
	blinkTicks++;

	if (blinkTicks >= 5) {
		blink = !blink;
		blinkTicks = 0;
	}
}

void TextBox::render( Minecraft* minecraft, int xm, int ym ) {
	// textbox like in beta 1.7.3
	fill(x, y, x + width,  y + height, 0xffa0a0a0);
	fill(x + 1, y + 1, x + width - 1, y + height - 1, 0xff000000);

	glEnable2(GL_SCISSOR_TEST);
	glScissor(
		Gui::GuiScale * (x + 2), 
		minecraft->height - Gui::GuiScale * (y + height - 2), 
		Gui::GuiScale * (width - 2), 
		Gui::GuiScale * (height - 2)
	);

	if (text.empty() && !focused) {
		drawString(minecraft->font, hint, x + 2, y + 2, 0xff5e5e5e);
	} 

	if (focused && blink) text.push_back('_');

	drawString(minecraft->font, text, x + 2, y + 2, 0xffffffff);

	if (focused && blink) text.pop_back();

	glDisable2(GL_SCISSOR_TEST);
}