textcomponent.java

moto手机专用的LWT类库源码

// Decompiled by Jad v1.5.7g. Copyright 2000 Pavel Kouznetsov.
// Jad home page: http://www.geocities.com/SiliconValley/Bridge/8617/jad.html
// Decompiler options: packimports(3) fieldsfirst ansi 
// Source File Name:   TextComponent.java

package com.motorola.lwt;

import javax.microedition.lcdui.*;

// Referenced classes of package com.motorola.lwt:
//            Component

public abstract class TextComponent extends Component
{

    public static final int JUSTIFY_LEFT = 0;
    public static final int JUSTIFY_CENTER = 1;
    public static final int JUSTIFY_RIGHT = 2;
    public static final int NO_LIMIT = 0;
    static final int MARGIN = 2;
    int justification;
    int viewPortOriginX;
    int viewPortOriginY;
    int rows;
    int columns;
    int rowBoundaries[];
    int rowCount;
    char text[];
    short textWidth[];
    int textLength;
    int caretPosition;
    int lengthLimit;
    boolean editable;
    int screenPositionX;
    int screenPositionY;
    Font itsFont;
    int lineHeight;
    char echoChar;
    boolean multiLine;
    int constraint;
    int lastWidth;
    int lastHeight;
    char oneChar[];

    TextComponent(String s, boolean flag)
    {
        justification = 0;
        viewPortOriginX = 0;
        viewPortOriginY = 0;
        rows = 1;
        columns = 1;
        rowBoundaries = new int[5];
        rowCount = 1;
        textLength = 0;
        caretPosition = 0;
        lengthLimit = 0;
        editable = true;
        screenPositionX = 0;
        screenPositionY = 0;
        itsFont = Font.getDefaultFont();
        lineHeight = itsFont.getHeight();
        echoChar = '\0';
        multiLine = false;
        constraint = 0;
        lastWidth = 0;
        lastHeight = 0;
        oneChar = new char[1];
        multiLine = flag;
        if(s != null)
        {
            int i = s.length();
            text = new char[i + 10];
            textWidth = new short[i + 10];
            setText(s);
        } else
        {
            text = new char[10];
            textWidth = new short[10];
        }
        acceptsKeyFocus = true;
    }

    public void setConstraint(int i)
        throws IllegalArgumentException
    {
        if(i >= 0 && i <= 4)
        {
            constraint = i;
            if(!validText(text, 0, textLength))
                setText("");
            return;
        } else
        {
            throw new IllegalArgumentException();
        }
    }

    public int getConstraint()
    {
        return constraint;
    }

    public int getPreferredWidth()
    {
        return itsFont.charWidth('W') * columns;
    }

    public int getPreferredHeight()
    {
        return lineHeight * rows + 10;
    }

    public Font getFont()
    {
        return itsFont;
    }

    public void setFont(Font font)
    {
        if(font == null)
            font = Font.getDefaultFont();
        itsFont = font;
        lineHeight = font.getHeight();
        for(int i = textLength - 1; i >= 0; i--)
            textWidth[i] = (short)font.charWidth(text[i]);

        preferredWidthChanged();
        preferredHeightChanged();
        reformatText(0, textLength - 1);
    }

    public void setJustification(int i)
        throws IllegalArgumentException
    {
        if(justification != i)
            if(i >= 0 && i <= 2)
            {
                justification = i;
                repaint();
            } else
            {
                throw new IllegalArgumentException();
            }
    }

    public char getEchoChar()
    {
        return echoChar;
    }

    public void setEchoChar(char c)
    {
        if(c != echoChar)
        {
            echoChar = c;
            char ac[] = getText().toCharArray();
            replaceTextRange(ac, 0, textLength, false);
        }
    }

    public int getLengthLimit()
    {
        return lengthLimit;
    }

    public void setLengthLimit(int i)
    {
        if(i != lengthLimit)
        {
            if(i <= 0)
                i = 0;
            lengthLimit = i;
            if(lengthLimit != 0 && textLength > lengthLimit)
            {
                textLength = lengthLimit;
                textChanged(0, textLength, false);
            }
        }
    }

    public synchronized String getText()
    {
        return new String(text, 0, textLength);
    }

    public synchronized void setText(String s)
        throws IllegalArgumentException
    {
        replaceTextRange(s != null ? s.toCharArray() : null, 0, textLength, false);
    }

    public synchronized void appendText(String s)
        throws IllegalArgumentException
    {
        replaceTextRange(s.toCharArray(), textLength, textLength, false);
    }

    public synchronized void appendChar(char c)
        throws IllegalArgumentException
    {
        replaceTextRange(c, textLength, textLength, false);
    }

    public synchronized void insertText(String s, int i)
        throws IllegalArgumentException
    {
        replaceTextRange(s.toCharArray(), i, i, false);
    }

    public synchronized void insertChar(char c, int i)
        throws IllegalArgumentException
    {
        replaceTextRange(c, i, i, false);
    }

    public void pointerPressed(int i, int j)
    {
        requestFocus();
        setCaretPosition(charIndex(i, j + lineHeight));
    }

    public boolean keyRepeated(int i)
    {
        return keyPressed(i);
    }

    public boolean keyPressed(int i)
    {
        if(i == parent.getKeyCode(2))
        {
            setCaretPosition(caretPosition - 1);
            return true;
        }
        if(i == parent.getKeyCode(1))
            if(getRowNumber(caretPosition) > 0)
            {
                screenPosition(caretPosition);
                int j = screenPositionY - lineHeight;
                if(!editable)
                    j = getHeight() * 2;
                setCaretPosition(charIndex(screenPositionY, j));
                return true;
            } else
            {
                return false;
            }
        if(i == parent.getKeyCode(5))
        {
            setCaretPosition(caretPosition + 1);
            return true;
        }
        if(i == parent.getKeyCode(6))
            if(getRowNumber(caretPosition) < rowCount - 1)
            {
                screenPosition(caretPosition);
                int k = screenPositionY + lineHeight;
                if(!editable)
                    k = getHeight() * 2;
                setCaretPosition(charIndex(screenPositionY, k));
                return true;
            } else
            {
                return false;
            }
        if(i <= 0)
            return false;
        if(editable)
        {
            switch(i)
            {
            case 8: // '\b'
                if(caretPosition > 0)
                {
                    setCaretPosition(caretPosition - 1);
                    replaceTextRange(((char []) (null)), caretPosition, caretPosition + 1, true);
                }
                return true;

            case 127: // '\177'
                if(caretPosition < textLength)
                {
                    replaceTextRange(((char []) (null)), caretPosition, caretPosition + 1, true);
                    setCaretPosition(caretPosition);
                }
                return true;

            case 10: // '\n'
                if(multiLine)
                {
                    replaceTextRange('\n', caretPosition, caretPosition, true);
                    setCaretPosition(caretPosition + 1);
                    return true;
                } else
                {
                    return false;
                }

            case 201: 
            case 202: 
            case 203: 
            case 204: 
                return false;
            }
            try
            {
                char c = (char)i;
                if(itsFont.charWidth(c) > 0 && (lengthLimit == 0 || textLength < lengthLimit))
                {
                    replaceTextRange(c, caretPosition, caretPosition, true);
                    setCaretPosition(caretPosition + 1);
                }
            }
            catch(Throwable _ex) { }
        }
        return true;
    }

    protected void textChanged(int i, int j, boolean flag)
    {
    }

    int getRowNumber(int i)
    {
        int j;