protected boolean insertCharacter(char charTyped) {
if (isAllowedCharacter(charTyped)) {
if (selectionStart != selectionEnd) {
if (caret == selectionStart) {
++caret;
}
text[selectionStart++] = charTyped;
return true;
}
if ((caretInsert && caret == text.length) || textLength == text.length) {
return false;
}
if (!caretInsert) {
if (caret < textLength) {
System.arraycopy(text, caret, text, caret + 1, textLength - caret);
}
++textLength;
}
text[caret++] = charTyped;
return true;
} else {
return true;
}
}
public ElementTextField setMaxLength(short limit) {
char[] oldText = text;
text = new char[limit];
textLength = Math.min(limit, textLength);
if (oldText != null) {
System.arraycopy(oldText, 0, text, 0, textLength);
}
findRenderStart();
return this;
}
protected void clearSelection() {
if (selectionStart != selectionEnd) {
if (selectionEnd < textLength) {
System.arraycopy(text, selectionEnd, text, selectionStart, textLength - selectionEnd);
}
textLength -= selectionEnd - selectionStart;
selectionEnd = caret = selectionStart;
findRenderStart();
}
}
@Override
public boolean onKeyTyped(char charTyped, int keyTyped) {
if (!isFocused()) {
return false;
}
switch (charTyped) {
case 1: // ^A
selectionEnd = caret = textLength;
selectionStart = 0;
findRenderStart();
return true;
case 3: // ^C
if (selectionStart != selectionEnd) {
GuiScreen.setClipboardString(getSelectedText());
}
return true;
case 24: // ^X
if (selectionStart != selectionEnd) {
GuiScreen.setClipboardString(getSelectedText());
clearSelection();
}
return true;
case 22: // ^V
writeText(GuiScreen.getClipboardString());
return true;
default:
switch (keyTyped) {
case Keyboard.KEY_ESCAPE:
setFocused(false);
return !isFocused();
case Keyboard.KEY_RETURN:
case Keyboard.KEY_NUMPADENTER:
return onEnter();
case Keyboard.KEY_INSERT:
if (GuiScreen.isShiftKeyDown()) {
writeText(GuiScreen.getClipboardString());
} else {
caretInsert = !caretInsert;
}
return true;
case Keyboard.KEY_CLEAR: // mac only (clear selection)
clearSelection();
return true;
case Keyboard.KEY_DELETE: // delete
if (!GuiScreen.isShiftKeyDown()) {
if (selectionStart != selectionEnd) {
clearSelection();
} else if (GuiScreen.isCtrlKeyDown()) {
int size = seekNextCaretLocation(caret, true) - caret;
selectionStart = caret;
selectionEnd = caret + size;
clearSelection();
} else {
if (caret < textLength && textLength > 0) {
--textLength;
System.arraycopy(text, caret + 1, text, caret, textLength - caret);
}
}
if (caret <= renderStart) {
renderStart = MathHelper.clampI(caret - 3, 0, textLength);
}
findRenderStart();
onCharacterEntered(true);
return true;
}
// continue.. (shift+delete = backspace)
case Keyboard.KEY_BACK: // backspace
if (selectionStart != selectionEnd) {
clearSelection();
} else if (GuiScreen.isCtrlKeyDown()) {
int size = seekNextCaretLocation(caret, false) - caret;
selectionStart = caret + size;
selectionEnd = caret;
clearSelection();
} else {
if (caret > 0 && textLength > 0) {
--caret;
System.arraycopy(text, caret + 1, text, caret, textLength - caret);
--textLength;
}
}
if (caret <= renderStart) {
renderStart = MathHelper.clampI(caret - 3, 0, textLength);
}
findRenderStart();
onCharacterEntered(true);
return true;
case Keyboard.KEY_HOME: // home
if (GuiScreen.isShiftKeyDown()) {
if (caret > selectionEnd) {
selectionEnd = selectionStart;
}
selectionStart = 0;
} else {
selectionStart = selectionEnd = 0;
}
renderStart = caret = 0;
return true;
case Keyboard.KEY_END: // end
if (GuiScreen.isShiftKeyDown()) {
if (caret < selectionStart) {
selectionStart = selectionEnd;
}
selectionEnd = textLength;
} else {
selectionStart = selectionEnd = textLength;
}
caret = textLength;
findRenderStart();
return true;
case Keyboard.KEY_LEFT: // left arrow
case Keyboard.KEY_RIGHT: // right arrow
int size = keyTyped == 203 ? -1 : 1;
if (GuiScreen.isCtrlKeyDown()) {
size = seekNextCaretLocation(caret, keyTyped == 205) - caret;
}
if (selectionStart == selectionEnd || !GuiScreen.isShiftKeyDown()) {
selectionStart = selectionEnd = caret;
}
{
int t = caret;
caret = MathHelper.clampI(caret + size, 0, textLength);
size = caret - t;
}
findRenderStart();
if (GuiScreen.isShiftKeyDown()) {
if (caret == selectionStart + size) {
selectionStart = caret;
} else if (caret == selectionEnd + size) {
selectionEnd = caret;
}
// this logic is 'broken' in that the selection doesn't wrap
// such that a|bc|def becomes abc|def| but it will highlight
// the rest of the word the caret is on i.e., a|bc|def -> a|bcdef|
// i don't know that it matters (home+end exhibit the former)
if (selectionStart > selectionEnd) {
int t = selectionStart;
selectionStart = selectionEnd;
selectionEnd = t;
}
}
return true;
default:
if (isAllowedCharacter(charTyped)) {
boolean typed = insertCharacter(charTyped);
clearSelection();
findRenderStart();
onCharacterEntered(typed);
return true;
} else {
return false;
}
}
}
}