li/cil/oc/gui/GuiMultilineTextField.java - minecraft/opencomputers - Rivoreo Source Code Repositories

 package li.cil.oc.gui;

 import cpw.mods.fml.relauncher.Side;
 import cpw.mods.fml.relauncher.SideOnly;
 import net.minecraft.client.gui.FontRenderer;
 import net.minecraft.client.gui.Gui;
 import net.minecraft.client.gui.GuiScreen;
 import net.minecraft.client.renderer.Tessellator;
 import net.minecraft.util.ChatAllowedCharacters;
 import org.lwjgl.opengl.GL11;

 @SideOnly(Side.CLIENT)
 public class GuiMultilineTextField extends Gui
 {
     /**
      * Have the font renderer from GuiScreen to render the textbox text into the screen.
      */
     private final FontRenderer fontRenderer;
     private final int xPos;
     private final int yPos;

     /** The width of this text field. */
     private final int width;
     private final int height;

     /** Have the current text beign edited on the textbox. */
     private String text = "";
     private int maxStringLength = 32;
     private int cursorCounter;
     private boolean enableBackgroundDrawing = true;

     /**
      * if true the textbox can lose focus by clicking elsewhere on the screen
      */
     private boolean canLoseFocus = true;

     /**
      * If this value is true along isEnabled, keyTyped will process the keys.
      */
     private boolean isFocused;

     /**
      * If this value is true along isFocused, keyTyped will process the keys.
      */
     private boolean isEnabled = true;

     /**
      * The current character index that should be used as start of the rendered text.
      */
     private int lineScrollOffset;
     private int cursorPosition;

     /** other selection position, maybe the same as the cursor */
     private int selectionEnd;
     private int enabledColor = 14737632;
     private int disabledColor = 7368816;

     /** True if this textbox is visible */
     private boolean visible = true;

     public GuiMultilineTextField(FontRenderer par1FontRenderer, int xPos, int yPos, int width, int height)
     {
         this.fontRenderer = par1FontRenderer;
         this.xPos = xPos;
         this.yPos = yPos;
         this.width = width;
         this.height = height;
     }

     /**
      * Increments the cursor counter
      */
     public void updateCursorCounter()
     {
         ++this.cursorCounter;
     }

     /**
      * Sets the text of the textbox.
      */
     public void setText(String text)
     {
         if (text.length() > this.maxStringLength)
         {
             this.text = text.substring(0, this.maxStringLength);
         }
         else
         {
             this.text = text;
         }

         this.setCursorPositionEnd();
     }

     /**
      * Returns the text beign edited on the textbox.
      */
     public String getText()
     {
         return this.text;
     }

     /**
      * @return returns the text between the cursor and selectionEnd
      */
     public String getSelectedtext()
     {
         int i = this.cursorPosition < this.selectionEnd ? this.cursorPosition : this.selectionEnd;
         int j = this.cursorPosition < this.selectionEnd ? this.selectionEnd : this.cursorPosition;
         return this.text.substring(i, j);
     }

     /**
      * replaces selected text, or inserts text at the position on the cursor
      */
     public void writeText(String par1Str)
     {
         String s1 = "";
         String s2 = ChatAllowedCharacters.filerAllowedCharacters(par1Str);
         int i = this.cursorPosition < this.selectionEnd ? this.cursorPosition : this.selectionEnd;
         int j = this.cursorPosition < this.selectionEnd ? this.selectionEnd : this.cursorPosition;
         int k = this.maxStringLength - this.text.length() - (i - this.selectionEnd);
         boolean flag = false;

         if (this.text.length() > 0)
         {
             s1 = s1 + this.text.substring(0, i);
         }

         int l;

         if (k < s2.length())
         {
             s1 = s1 + s2.substring(0, k);
             l = k;
         }
         else
         {
             s1 = s1 + s2;
             l = s2.length();
         }

         if (this.text.length() > 0 && j < this.text.length())
         {
             s1 = s1 + this.text.substring(j);
         }

         this.text = s1;
         this.moveCursorBy(i - this.selectionEnd + l);
     }

     /**
      * Deletes the specified number of words starting at the cursor position. Negative numbers will delete words left of
      * the cursor.
      */
     public void deleteWords(int par1)
     {
         if (this.text.length() != 0)
         {
             if (this.selectionEnd != this.cursorPosition)
             {
                 this.writeText("");
             }
             else
             {
                 this.deleteFromCursor(this.getNthWordFromCursor(par1) - this.cursorPosition);
             }
         }
     }

     /**
      * delete the selected text, otherwsie deletes characters from either side of the cursor. params: delete num
      */
     public void deleteFromCursor(int par1)
     {
         if (this.text.length() != 0)
         {
             if (this.selectionEnd != this.cursorPosition)
             {
                 this.writeText("");
             }
             else
             {
                 boolean flag = par1 < 0;
                 int j = flag ? this.cursorPosition + par1 : this.cursorPosition;
                 int k = flag ? this.cursorPosition : this.cursorPosition + par1;
                 String s = "";

                 if (j >= 0)
                 {
                     s = this.text.substring(0, j);
                 }

                 if (k < this.text.length())
                 {
                     s = s + this.text.substring(k);
                 }

                 this.text = s;

                 if (flag)
                 {
                     this.moveCursorBy(par1);
                 }
             }
         }
     }

     /**
      * see @getNthNextWordFromPos() params: N, position
      */
     public int getNthWordFromCursor(int par1)
     {
         return this.getNthWordFromPos(par1, this.getCursorPosition());
     }

     /**
      * gets the position of the nth word. N may be negative, then it looks backwards. params: N, position
      */
     public int getNthWordFromPos(int par1, int par2)
     {
         return this.func_73798_a(par1, this.getCursorPosition(), true);
     }

     public int func_73798_a(int par1, int par2, boolean par3)
     {
         int k = par2;
         boolean flag1 = par1 < 0;
         int l = Math.abs(par1);

         for (int i1 = 0; i1 < l; ++i1)
         {
             if (flag1)
             {
                 while (par3 && k > 0 && this.text.charAt(k - 1) == 32)
                 {
                     --k;
                 }

                 while (k > 0 && this.text.charAt(k - 1) != 32)
                 {
                     --k;
                 }
             }
             else
             {
                 int j1 = this.text.length();
                 k = this.text.indexOf(32, k);

                 if (k == -1)
                 {
                     k = j1;
                 }
                 else
                 {
                     while (par3 && k < j1 && this.text.charAt(k) == 32)
                     {
                         ++k;
                     }
                 }
             }
         }

         return k;
     }

     /**
      * Moves the text cursor by a specified number of characters and clears the selection
      */
     public void moveCursorBy(int par1)
     {
         this.setCursorPosition(this.selectionEnd + par1);
     }

     /**
      * sets the position of the cursor to the provided index
      */
     public void setCursorPosition(int par1)
     {
         this.cursorPosition = par1;
         int j = this.text.length();

         if (this.cursorPosition < 0)
         {
             this.cursorPosition = 0;
         }

         if (this.cursorPosition > j)
         {
             this.cursorPosition = j;
         }

         this.setSelectionPos(this.cursorPosition);
     }

     /**
      * sets the cursors position to the beginning
      */
     public void setCursorPositionZero()
     {
         this.setCursorPosition(0);
     }

     /**
      * sets the cursors position to after the text
      */
     public void setCursorPositionEnd()
     {
         this.setCursorPosition(this.text.length());
     }

     /**
      * Call this method from you GuiScreen to process the keys into textbox.
      */
     public boolean textboxKeyTyped(char par1, int par2)
     {
         if (this.isEnabled && this.isFocused)
         {
             switch (par1)
             {
                 case 1:
                     this.setCursorPositionEnd();
                     this.setSelectionPos(0);
                     return true;
                 case 3:
                     GuiScreen.setClipboardString(this.getSelectedtext());
                     return true;
                 case 22:
                     this.writeText(GuiScreen.getClipboardString());
                     return true;
                 case 24:
                     GuiScreen.setClipboardString(this.getSelectedtext());
                     this.writeText("");
                     return true;
                 default:
                     switch (par2)
                     {
                         case 14:
                             if (GuiScreen.isCtrlKeyDown())
                             {
                                 this.deleteWords(-1);
                             }
                             else
                             {
                                 this.deleteFromCursor(-1);
                             }

                             return true;
                         case 199:
                             if (GuiScreen.isShiftKeyDown())
                             {
                                 this.setSelectionPos(0);
                             }
                             else
                             {
                                 this.setCursorPositionZero();
                             }

                             return true;
                         case 203:
                             if (GuiScreen.isShiftKeyDown())
                             {
                                 if (GuiScreen.isCtrlKeyDown())
                                 {
                                     this.setSelectionPos(this.getNthWordFromPos(-1, this.getSelectionEnd()));
                                 }
                                 else
                                 {
                                     this.setSelectionPos(this.getSelectionEnd() - 1);
                                 }
                             }
                             else if (GuiScreen.isCtrlKeyDown())
                             {
                                 this.setCursorPosition(this.getNthWordFromCursor(-1));
                             }
                             else
                             {
                                 this.moveCursorBy(-1);
                             }

                             return true;
                         case 205:
                             if (GuiScreen.isShiftKeyDown())
                             {
                                 if (GuiScreen.isCtrlKeyDown())
                                 {
                                     this.setSelectionPos(this.getNthWordFromPos(1, this.getSelectionEnd()));
                                 }
                                 else
                                 {
                                     this.setSelectionPos(this.getSelectionEnd() + 1);
                                 }
                             }
                             else if (GuiScreen.isCtrlKeyDown())
                             {
                                 this.setCursorPosition(this.getNthWordFromCursor(1));
                             }
                             else
                             {
                                 this.moveCursorBy(1);
                             }

                             return true;
                         case 207:
                             if (GuiScreen.isShiftKeyDown())
                             {
                                 this.setSelectionPos(this.text.length());
                             }
                             else
                             {
                                 this.setCursorPositionEnd();
                             }

                             return true;
                         case 211:
                             if (GuiScreen.isCtrlKeyDown())
                             {
                                 this.deleteWords(1);
                             }
                             else
                             {
                                 this.deleteFromCursor(1);
                             }

                             return true;
                         default:
                             if (ChatAllowedCharacters.isAllowedCharacter(par1))
                             {
                                 this.writeText(Character.toString(par1));
                                 return true;
                             }
                             else
                             {
                                 return false;
                             }
                     }
             }
         }
         else
         {
             return false;
         }
     }

     /**
      * Args: x, y, buttonClicked
      */
     public void mouseClicked(int par1, int par2, int par3)
     {
         boolean flag = par1 >= this.xPos && par1 < this.xPos + this.width && par2 >= this.yPos && par2 < this.yPos + this.height;

         if (this.canLoseFocus)
         {
             this.setFocused(this.isEnabled && flag);
         }

         if (this.isFocused && par3 == 0)
         {
             int l = par1 - this.xPos;

             if (this.enableBackgroundDrawing)
             {
                 l -= 4;
             }

             String s = this.fontRenderer.trimStringToWidth(this.text.substring(this.lineScrollOffset), this.getWidth());
             this.setCursorPosition(this.fontRenderer.trimStringToWidth(s, l).length() + this.lineScrollOffset);
         }
     }

     /**
      * Draws the textbox
      */
     public void drawTextBox()
     {
         if (this.getVisible())
         {
             if (this.getEnableBackgroundDrawing())
             {
                 drawRect(this.xPos - 1, this.yPos - 1, this.xPos + this.width + 1, this.yPos + this.height + 1, -6250336);
                 drawRect(this.xPos, this.yPos, this.xPos + this.width, this.yPos + this.height, -16777216);
             }

             int color = this.isEnabled ? this.enabledColor : this.disabledColor;
             int cursorMinusScroll = this.cursorPosition - this.lineScrollOffset;
             int selectionMinusOffset = this.selectionEnd - this.lineScrollOffset;
             String s = this.fontRenderer.trimStringToWidth(this.text.substring(this.lineScrollOffset), this.getWidth());
             boolean flag = cursorMinusScroll >= 0 && cursorMinusScroll <= s.length();
             boolean flag1 = this.isFocused && this.cursorCounter / 6 % 2 == 0 && flag;
             int xStart = this.enableBackgroundDrawing ? this.xPos + 4 : this.xPos;
             int yStart = this.enableBackgroundDrawing ? this.yPos /*+ (this.height - 8) / 2*/ : this.yPos;
             int currentX = xStart;

             if (selectionMinusOffset > s.length())
             {
                 selectionMinusOffset = s.length();
             }

             if (s.length() > 0)
             {
                 String s1 = flag ? s.substring(0, cursorMinusScroll) : s;
                 int heightOld = this.fontRenderer.FONT_HEIGHT;
                 this.fontRenderer.FONT_HEIGHT = 3;
                 currentX = this.fontRenderer.drawStringWithShadow(s1, xStart, yStart, color);
                 this.fontRenderer.FONT_HEIGHT = heightOld;

             }

             boolean flag2 = this.cursorPosition < this.text.length() || this.text.length() >= this.getMaxStringLength();
             int k1 = currentX;

             if (!flag)
             {
                 k1 = cursorMinusScroll > 0 ? xStart + this.width : xStart;
             }
             else if (flag2)
             {
                 k1 = currentX - 1;
                 --currentX;
             }

             if (s.length() > 0 && flag && cursorMinusScroll < s.length())
             {
                 this.fontRenderer.drawStringWithShadow(s.substring(cursorMinusScroll), currentX, yStart, color);
             }

             if (flag1)
             {
                 if (flag2)
                 {
                     Gui.drawRect(k1, yStart - 1, k1 + 1, yStart + 1 + this.fontRenderer.FONT_HEIGHT, -3092272);
                 }
                 else
                 {
                     this.fontRenderer.drawStringWithShadow("_", k1, yStart, color);
                 }
             }

             if (selectionMinusOffset != cursorMinusScroll)
             {
                 int l1 = xStart + this.fontRenderer.getStringWidth(s.substring(0, selectionMinusOffset));
                 this.drawCursorVertical(k1, yStart - 1, l1 - 1, yStart + 1 + this.fontRenderer.FONT_HEIGHT);
             }
         }
     }

     /**
      * draws the vertical line cursor in the textbox
      */
     private void drawCursorVertical(int par1, int par2, int par3, int par4)
     {
         int i1;

         if (par1 < par3)
         {
             i1 = par1;
             par1 = par3;
             par3 = i1;
         }

         if (par2 < par4)
         {
             i1 = par2;
             par2 = par4;
             par4 = i1;
         }

         Tessellator tessellator = Tessellator.instance;
         GL11.glColor4f(0.0F, 0.0F, 255.0F, 255.0F);
         GL11.glDisable(GL11.GL_TEXTURE_2D);
         GL11.glEnable(GL11.GL_COLOR_LOGIC_OP);
         GL11.glLogicOp(GL11.GL_OR_REVERSE);
         tessellator.startDrawingQuads();
         tessellator.addVertex((double)par1, (double)par4, 0.0D);
         tessellator.addVertex((double)par3, (double)par4, 0.0D);
         tessellator.addVertex((double)par3, (double)par2, 0.0D);
         tessellator.addVertex((double)par1, (double)par2, 0.0D);
         tessellator.draw();
         GL11.glDisable(GL11.GL_COLOR_LOGIC_OP);
         GL11.glEnable(GL11.GL_TEXTURE_2D);
     }

     public void setMaxStringLength(int par1)
     {
         this.maxStringLength = par1;

         if (this.text.length() > par1)
         {
             this.text = this.text.substring(0, par1);
         }
     }

     /**
      * returns the maximum number of character that can be contained in this textbox
      */
     public int getMaxStringLength()
     {
         return this.maxStringLength;
     }

     /**
      * returns the current position of the cursor
      */
     public int getCursorPosition()
     {
         return this.cursorPosition;
     }

     /**
      * get enable drawing background and outline
      */
     public boolean getEnableBackgroundDrawing()
     {
         return this.enableBackgroundDrawing;
     }

     /**
      * enable drawing background and outline
      */
     public void setEnableBackgroundDrawing(boolean par1)
     {
         this.enableBackgroundDrawing = par1;
     }

     /**
      * Sets the text colour for this textbox (disabled text will not use this colour)
      */
     public void setTextColor(int par1)
     {
         this.enabledColor = par1;
     }

     public void setDisabledTextColour(int par1)
     {
         this.disabledColor = par1;
     }

     /**
      * setter for the focused field
      */
     public void setFocused(boolean par1)
     {
         if (par1 && !this.isFocused)
         {
             this.cursorCounter = 0;
         }

         this.isFocused = par1;
     }

     /**
      * getter for the focused field
      */
     public boolean isFocused()
     {
         return this.isFocused;
     }

     public void setEnabled(boolean par1)
     {
         this.isEnabled = par1;
     }

     /**
      * the side of the selection that is not the cursor, maye be the same as the cursor
      */
     public int getSelectionEnd()
     {
         return this.selectionEnd;
     }

     /**
      * returns the width of the textbox depending on if the the box is enabled
      */
     public int getWidth()
     {
         return this.getEnableBackgroundDrawing() ? this.width - 8 : this.width;
     }

     /**
      * Sets the position of the selection anchor (i.e. position the selection was started at)
      */
     public void setSelectionPos(int par1)
     {
         int j = this.text.length();

         if (par1 > j)
         {
             par1 = j;
         }

         if (par1 < 0)
         {
             par1 = 0;
         }

         this.selectionEnd = par1;

         if (this.fontRenderer != null)
         {
             if (this.lineScrollOffset > j)
             {
                 this.lineScrollOffset = j;
             }

             int k = this.getWidth();
             String s = this.fontRenderer.trimStringToWidth(this.text.substring(this.lineScrollOffset), k);
             int l = s.length() + this.lineScrollOffset;

             if (par1 == this.lineScrollOffset)
             {
                 this.lineScrollOffset -= this.fontRenderer.trimStringToWidth(this.text, k, true).length();
             }

             if (par1 > l)
             {
                 this.lineScrollOffset += par1 - l;
             }
             else if (par1 <= this.lineScrollOffset)
             {
                 this.lineScrollOffset -= this.lineScrollOffset - par1;
             }

             if (this.lineScrollOffset < 0)
             {
                 this.lineScrollOffset = 0;
             }

             if (this.lineScrollOffset > j)
             {
                 this.lineScrollOffset = j;
             }
         }
     }

     /**
      * if true the textbox can lose focus by clicking elsewhere on the screen
      */
     public void setCanLoseFocus(boolean par1)
     {
         this.canLoseFocus = par1;
     }

     /**
      * @return {@code true} if this textbox is visible
      */
     public boolean getVisible()
     {
         return this.visible;
     }

     /**
      * Sets whether or not this textbox is visible
      */
     public void setVisible(boolean par1)
     {
         this.visible = par1;
     }
 }
	package li.cil.oc.gui;

	import cpw.mods.fml.relauncher.Side;
	import cpw.mods.fml.relauncher.SideOnly;
	import net.minecraft.client.gui.FontRenderer;
	import net.minecraft.client.gui.Gui;
	import net.minecraft.client.gui.GuiScreen;
	import net.minecraft.client.renderer.Tessellator;
	import net.minecraft.util.ChatAllowedCharacters;
	import org.lwjgl.opengl.GL11;

	@SideOnly(Side.CLIENT)
	public class GuiMultilineTextField extends Gui
	{
	/**
	* Have the font renderer from GuiScreen to render the textbox text into the screen.
	*/
	private final FontRenderer fontRenderer;
	private final int xPos;
	private final int yPos;

	/** The width of this text field. */
	private final int width;
	private final int height;

	/** Have the current text beign edited on the textbox. */
	private String text = "";
	private int maxStringLength = 32;
	private int cursorCounter;
	private boolean enableBackgroundDrawing = true;

	/**
	* if true the textbox can lose focus by clicking elsewhere on the screen
	*/
	private boolean canLoseFocus = true;

	/**
	* If this value is true along isEnabled, keyTyped will process the keys.
	*/
	private boolean isFocused;

	/**
	* If this value is true along isFocused, keyTyped will process the keys.
	*/
	private boolean isEnabled = true;

	/**
	* The current character index that should be used as start of the rendered text.
	*/
	private int lineScrollOffset;
	private int cursorPosition;

	/** other selection position, maybe the same as the cursor */
	private int selectionEnd;
	private int enabledColor = 14737632;
	private int disabledColor = 7368816;

	/** True if this textbox is visible */
	private boolean visible = true;

	public GuiMultilineTextField(FontRenderer par1FontRenderer, int xPos, int yPos, int width, int height)
	{
	this.fontRenderer = par1FontRenderer;
	this.xPos = xPos;
	this.yPos = yPos;
	this.width = width;
	this.height = height;
	}

	/**
	* Increments the cursor counter
	*/
	public void updateCursorCounter()
	{
	++this.cursorCounter;
	}

	/**
	* Sets the text of the textbox.
	*/
	public void setText(String text)
	{
	if (text.length() > this.maxStringLength)
	{
	this.text = text.substring(0, this.maxStringLength);
	}
	else
	{
	this.text = text;
	}

	this.setCursorPositionEnd();
	}

	/**
	* Returns the text beign edited on the textbox.
	*/
	public String getText()
	{
	return this.text;
	}

	/**
	* @return returns the text between the cursor and selectionEnd
	*/
	public String getSelectedtext()
	{
	int i = this.cursorPosition < this.selectionEnd ? this.cursorPosition : this.selectionEnd;
	int j = this.cursorPosition < this.selectionEnd ? this.selectionEnd : this.cursorPosition;
	return this.text.substring(i, j);
	}

	/**
	* replaces selected text, or inserts text at the position on the cursor
	*/
	public void writeText(String par1Str)
	{
	String s1 = "";
	String s2 = ChatAllowedCharacters.filerAllowedCharacters(par1Str);
	int i = this.cursorPosition < this.selectionEnd ? this.cursorPosition : this.selectionEnd;
	int j = this.cursorPosition < this.selectionEnd ? this.selectionEnd : this.cursorPosition;
	int k = this.maxStringLength - this.text.length() - (i - this.selectionEnd);
	boolean flag = false;

	if (this.text.length() > 0)
	{
	s1 = s1 + this.text.substring(0, i);
	}

	int l;

	if (k < s2.length())
	{
	s1 = s1 + s2.substring(0, k);
	l = k;
	}
	else
	{
	s1 = s1 + s2;
	l = s2.length();
	}

	if (this.text.length() > 0 && j < this.text.length())
	{
	s1 = s1 + this.text.substring(j);
	}

	this.text = s1;
	this.moveCursorBy(i - this.selectionEnd + l);
	}

	/**
	* Deletes the specified number of words starting at the cursor position. Negative numbers will delete words left of
	* the cursor.
	*/
	public void deleteWords(int par1)
	{
	if (this.text.length() != 0)
	{
	if (this.selectionEnd != this.cursorPosition)
	{
	this.writeText("");
	}
	else
	{
	this.deleteFromCursor(this.getNthWordFromCursor(par1) - this.cursorPosition);
	}
	}
	}

	/**
	* delete the selected text, otherwsie deletes characters from either side of the cursor. params: delete num
	*/
	public void deleteFromCursor(int par1)
	{
	if (this.text.length() != 0)
	{
	if (this.selectionEnd != this.cursorPosition)
	{
	this.writeText("");
	}
	else
	{
	boolean flag = par1 < 0;
	int j = flag ? this.cursorPosition + par1 : this.cursorPosition;
	int k = flag ? this.cursorPosition : this.cursorPosition + par1;
	String s = "";

	if (j >= 0)
	{
	s = this.text.substring(0, j);
	}

	if (k < this.text.length())
	{
	s = s + this.text.substring(k);
	}

	this.text = s;

	if (flag)
	{
	this.moveCursorBy(par1);
	}
	}
	}
	}

	/**
	* see @getNthNextWordFromPos() params: N, position
	*/
	public int getNthWordFromCursor(int par1)
	{
	return this.getNthWordFromPos(par1, this.getCursorPosition());
	}

	/**
	* gets the position of the nth word. N may be negative, then it looks backwards. params: N, position
	*/
	public int getNthWordFromPos(int par1, int par2)
	{
	return this.func_73798_a(par1, this.getCursorPosition(), true);
	}

	public int func_73798_a(int par1, int par2, boolean par3)
	{
	int k = par2;
	boolean flag1 = par1 < 0;
	int l = Math.abs(par1);

	for (int i1 = 0; i1 < l; ++i1)
	{
	if (flag1)
	{
	while (par3 && k > 0 && this.text.charAt(k - 1) == 32)
	{
	--k;
	}

	while (k > 0 && this.text.charAt(k - 1) != 32)
	{
	--k;
	}
	}
	else
	{
	int j1 = this.text.length();
	k = this.text.indexOf(32, k);

	if (k == -1)
	{
	k = j1;
	}
	else
	{
	while (par3 && k < j1 && this.text.charAt(k) == 32)
	{
	++k;
	}
	}
	}
	}

	return k;
	}

	/**
	* Moves the text cursor by a specified number of characters and clears the selection
	*/
	public void moveCursorBy(int par1)
	{
	this.setCursorPosition(this.selectionEnd + par1);
	}

	/**
	* sets the position of the cursor to the provided index
	*/
	public void setCursorPosition(int par1)
	{
	this.cursorPosition = par1;
	int j = this.text.length();

	if (this.cursorPosition < 0)
	{
	this.cursorPosition = 0;
	}

	if (this.cursorPosition > j)
	{
	this.cursorPosition = j;
	}

	this.setSelectionPos(this.cursorPosition);
	}

	/**
	* sets the cursors position to the beginning
	*/
	public void setCursorPositionZero()
	{
	this.setCursorPosition(0);
	}

	/**
	* sets the cursors position to after the text
	*/
	public void setCursorPositionEnd()
	{
	this.setCursorPosition(this.text.length());
	}

	/**
	* Call this method from you GuiScreen to process the keys into textbox.
	*/
	public boolean textboxKeyTyped(char par1, int par2)
	{
	if (this.isEnabled && this.isFocused)
	{
	switch (par1)
	{
	case 1:
	this.setCursorPositionEnd();
	this.setSelectionPos(0);
	return true;
	case 3:
	GuiScreen.setClipboardString(this.getSelectedtext());
	return true;
	case 22:
	this.writeText(GuiScreen.getClipboardString());
	return true;
	case 24:
	GuiScreen.setClipboardString(this.getSelectedtext());
	this.writeText("");
	return true;
	default:
	switch (par2)
	{
	case 14:
	if (GuiScreen.isCtrlKeyDown())
	{
	this.deleteWords(-1);
	}
	else
	{
	this.deleteFromCursor(-1);
	}

	return true;
	case 199:
	if (GuiScreen.isShiftKeyDown())
	{
	this.setSelectionPos(0);
	}
	else
	{
	this.setCursorPositionZero();
	}

	return true;
	case 203:
	if (GuiScreen.isShiftKeyDown())
	{
	if (GuiScreen.isCtrlKeyDown())
	{
	this.setSelectionPos(this.getNthWordFromPos(-1, this.getSelectionEnd()));
	}
	else
	{
	this.setSelectionPos(this.getSelectionEnd() - 1);
	}
	}
	else if (GuiScreen.isCtrlKeyDown())
	{
	this.setCursorPosition(this.getNthWordFromCursor(-1));
	}
	else
	{
	this.moveCursorBy(-1);
	}

	return true;
	case 205:
	if (GuiScreen.isShiftKeyDown())
	{
	if (GuiScreen.isCtrlKeyDown())
	{
	this.setSelectionPos(this.getNthWordFromPos(1, this.getSelectionEnd()));
	}
	else
	{
	this.setSelectionPos(this.getSelectionEnd() + 1);
	}
	}
	else if (GuiScreen.isCtrlKeyDown())
	{
	this.setCursorPosition(this.getNthWordFromCursor(1));
	}
	else
	{
	this.moveCursorBy(1);
	}

	return true;
	case 207:
	if (GuiScreen.isShiftKeyDown())
	{
	this.setSelectionPos(this.text.length());
	}
	else
	{
	this.setCursorPositionEnd();
	}

	return true;
	case 211:
	if (GuiScreen.isCtrlKeyDown())
	{
	this.deleteWords(1);
	}
	else
	{
	this.deleteFromCursor(1);
	}

	return true;
	default:
	if (ChatAllowedCharacters.isAllowedCharacter(par1))
	{
	this.writeText(Character.toString(par1));
	return true;
	}
	else
	{
	return false;
	}
	}
	}
	}
	else
	{
	return false;
	}
	}

	/**
	* Args: x, y, buttonClicked
	*/
	public void mouseClicked(int par1, int par2, int par3)
	{
	boolean flag = par1 >= this.xPos && par1 < this.xPos + this.width && par2 >= this.yPos && par2 < this.yPos + this.height;

	if (this.canLoseFocus)
	{
	this.setFocused(this.isEnabled && flag);
	}

	if (this.isFocused && par3 == 0)
	{
	int l = par1 - this.xPos;

	if (this.enableBackgroundDrawing)
	{
	l -= 4;
	}

	String s = this.fontRenderer.trimStringToWidth(this.text.substring(this.lineScrollOffset), this.getWidth());
	this.setCursorPosition(this.fontRenderer.trimStringToWidth(s, l).length() + this.lineScrollOffset);
	}
	}

	/**
	* Draws the textbox
	*/
	public void drawTextBox()
	{
	if (this.getVisible())
	{
	if (this.getEnableBackgroundDrawing())
	{
	drawRect(this.xPos - 1, this.yPos - 1, this.xPos + this.width + 1, this.yPos + this.height + 1, -6250336);
	drawRect(this.xPos, this.yPos, this.xPos + this.width, this.yPos + this.height, -16777216);
	}

	int color = this.isEnabled ? this.enabledColor : this.disabledColor;
	int cursorMinusScroll = this.cursorPosition - this.lineScrollOffset;
	int selectionMinusOffset = this.selectionEnd - this.lineScrollOffset;
	String s = this.fontRenderer.trimStringToWidth(this.text.substring(this.lineScrollOffset), this.getWidth());
	boolean flag = cursorMinusScroll >= 0 && cursorMinusScroll <= s.length();
	boolean flag1 = this.isFocused && this.cursorCounter / 6 % 2 == 0 && flag;
	int xStart = this.enableBackgroundDrawing ? this.xPos + 4 : this.xPos;
	int yStart = this.enableBackgroundDrawing ? this.yPos /+ (this.height - 8) / 2/ : this.yPos;
	int currentX = xStart;

	if (selectionMinusOffset > s.length())
	{
	selectionMinusOffset = s.length();
	}

	if (s.length() > 0)
	{
	String s1 = flag ? s.substring(0, cursorMinusScroll) : s;
	int heightOld = this.fontRenderer.FONT_HEIGHT;
	this.fontRenderer.FONT_HEIGHT = 3;
	currentX = this.fontRenderer.drawStringWithShadow(s1, xStart, yStart, color);
	this.fontRenderer.FONT_HEIGHT = heightOld;

	}

	boolean flag2 = this.cursorPosition < this.text.length() \|\| this.text.length() >= this.getMaxStringLength();
	int k1 = currentX;

	if (!flag)
	{
	k1 = cursorMinusScroll > 0 ? xStart + this.width : xStart;
	}
	else if (flag2)
	{
	k1 = currentX - 1;
	--currentX;
	}

	if (s.length() > 0 && flag && cursorMinusScroll < s.length())
	{
	this.fontRenderer.drawStringWithShadow(s.substring(cursorMinusScroll), currentX, yStart, color);
	}

	if (flag1)
	{
	if (flag2)
	{
	Gui.drawRect(k1, yStart - 1, k1 + 1, yStart + 1 + this.fontRenderer.FONT_HEIGHT, -3092272);
	}
	else
	{
	this.fontRenderer.drawStringWithShadow("_", k1, yStart, color);
	}
	}

	if (selectionMinusOffset != cursorMinusScroll)
	{
	int l1 = xStart + this.fontRenderer.getStringWidth(s.substring(0, selectionMinusOffset));
	this.drawCursorVertical(k1, yStart - 1, l1 - 1, yStart + 1 + this.fontRenderer.FONT_HEIGHT);
	}
	}
	}

	/**
	* draws the vertical line cursor in the textbox
	*/
	private void drawCursorVertical(int par1, int par2, int par3, int par4)
	{
	int i1;

	if (par1 < par3)
	{
	i1 = par1;
	par1 = par3;
	par3 = i1;
	}

	if (par2 < par4)
	{
	i1 = par2;
	par2 = par4;
	par4 = i1;
	}

	Tessellator tessellator = Tessellator.instance;
	GL11.glColor4f(0.0F, 0.0F, 255.0F, 255.0F);
	GL11.glDisable(GL11.GL_TEXTURE_2D);
	GL11.glEnable(GL11.GL_COLOR_LOGIC_OP);
	GL11.glLogicOp(GL11.GL_OR_REVERSE);
	tessellator.startDrawingQuads();
	tessellator.addVertex((double)par1, (double)par4, 0.0D);
	tessellator.addVertex((double)par3, (double)par4, 0.0D);
	tessellator.addVertex((double)par3, (double)par2, 0.0D);
	tessellator.addVertex((double)par1, (double)par2, 0.0D);
	tessellator.draw();
	GL11.glDisable(GL11.GL_COLOR_LOGIC_OP);
	GL11.glEnable(GL11.GL_TEXTURE_2D);
	}

	public void setMaxStringLength(int par1)
	{
	this.maxStringLength = par1;

	if (this.text.length() > par1)
	{
	this.text = this.text.substring(0, par1);
	}
	}

	/**
	* returns the maximum number of character that can be contained in this textbox
	*/
	public int getMaxStringLength()
	{
	return this.maxStringLength;
	}

	/**
	* returns the current position of the cursor
	*/
	public int getCursorPosition()
	{
	return this.cursorPosition;
	}

	/**
	* get enable drawing background and outline
	*/
	public boolean getEnableBackgroundDrawing()
	{
	return this.enableBackgroundDrawing;
	}

	/**
	* enable drawing background and outline
	*/
	public void setEnableBackgroundDrawing(boolean par1)
	{
	this.enableBackgroundDrawing = par1;
	}

	/**
	* Sets the text colour for this textbox (disabled text will not use this colour)
	*/
	public void setTextColor(int par1)
	{
	this.enabledColor = par1;
	}

	public void setDisabledTextColour(int par1)
	{
	this.disabledColor = par1;
	}

	/**
	* setter for the focused field
	*/
	public void setFocused(boolean par1)
	{
	if (par1 && !this.isFocused)
	{
	this.cursorCounter = 0;
	}

	this.isFocused = par1;
	}

	/**
	* getter for the focused field
	*/
	public boolean isFocused()
	{
	return this.isFocused;
	}

	public void setEnabled(boolean par1)
	{
	this.isEnabled = par1;
	}

	/**
	* the side of the selection that is not the cursor, maye be the same as the cursor
	*/
	public int getSelectionEnd()
	{
	return this.selectionEnd;
	}

	/**
	* returns the width of the textbox depending on if the the box is enabled
	*/
	public int getWidth()
	{
	return this.getEnableBackgroundDrawing() ? this.width - 8 : this.width;
	}

	/**
	* Sets the position of the selection anchor (i.e. position the selection was started at)
	*/
	public void setSelectionPos(int par1)
	{
	int j = this.text.length();

	if (par1 > j)
	{
	par1 = j;
	}

	if (par1 < 0)
	{
	par1 = 0;
	}

	this.selectionEnd = par1;

	if (this.fontRenderer != null)
	{
	if (this.lineScrollOffset > j)
	{
	this.lineScrollOffset = j;
	}

	int k = this.getWidth();
	String s = this.fontRenderer.trimStringToWidth(this.text.substring(this.lineScrollOffset), k);
	int l = s.length() + this.lineScrollOffset;

	if (par1 == this.lineScrollOffset)
	{
	this.lineScrollOffset -= this.fontRenderer.trimStringToWidth(this.text, k, true).length();
	}

	if (par1 > l)
	{
	this.lineScrollOffset += par1 - l;
	}
	else if (par1 <= this.lineScrollOffset)
	{
	this.lineScrollOffset -= this.lineScrollOffset - par1;
	}

	if (this.lineScrollOffset < 0)
	{
	this.lineScrollOffset = 0;
	}

	if (this.lineScrollOffset > j)
	{
	this.lineScrollOffset = j;
	}
	}
	}

	/**
	* if true the textbox can lose focus by clicking elsewhere on the screen
	*/
	public void setCanLoseFocus(boolean par1)
	{
	this.canLoseFocus = par1;
	}

	/**
	* @return {@code true} if this textbox is visible
	*/
	public boolean getVisible()
	{
	return this.visible;
	}

	/**
	* Sets whether or not this textbox is visible
	*/
	public void setVisible(boolean par1)
	{
	this.visible = par1;
	}
	}