+
+ if (inSelection) {
+ selectionColumn1 = document.getCursor();
+ selectionLine1 = document.getLineNumber();
+ }
+ }
+
+ /**
+ * Method that subclasses can override to handle window/screen resize
+ * events.
+ *
+ * @param resize resize event
+ */
+ @Override
+ public void onResize(final TResizeEvent resize) {
+ // Change my width/height, and pull the cursor in as needed.
+ if (resize.getType() == TResizeEvent.Type.WIDGET) {
+ setWidth(resize.getWidth());
+ setHeight(resize.getHeight());
+ // See if the cursor is now outside the window, and if so move
+ // things.
+ if (getCursorX() >= getWidth()) {
+ leftColumn += getCursorX() - (getWidth() - 1);
+ setCursorX(getWidth() - 1);
+ }
+ if (getCursorY() >= getHeight()) {
+ topLine += getCursorY() - (getHeight() - 1);
+ setCursorY(getHeight() - 1);
+ }
+ } else {
+ // Let superclass handle it
+ super.onResize(resize);
+ }
+ }
+
+ /**
+ * Handle posted command events.
+ *
+ * @param command command event
+ */
+ @Override
+ public void onCommand(final TCommandEvent command) {
+ if (command.equals(cmCut)) {
+ // Copy text to clipboard, and then remove it.
+ copySelection();
+ deleteSelection();
+ return;
+ }
+
+ if (command.equals(cmCopy)) {
+ // Copy text to clipboard.
+ copySelection();
+ return;
+ }
+
+ if (command.equals(cmPaste)) {
+ // Delete selected text, then paste text from clipboard.
+ deleteSelection();
+
+ String text = getClipboard().pasteText();
+ if (text != null) {
+ for (int i = 0; i < text.length(); ) {
+ int ch = text.codePointAt(i);
+ onKeypress(new TKeypressEvent(false, 0, ch, false, false,
+ false));
+ i += Character.charCount(ch);
+ }
+ }
+ return;
+ }
+
+ if (command.equals(cmClear)) {
+ // Remove text.
+ deleteSelection();
+ return;
+ }
+
+ }
+
+ // ------------------------------------------------------------------------
+ // TWidget ----------------------------------------------------------------
+ // ------------------------------------------------------------------------
+
+ /**
+ * Draw the text box.
+ */
+ @Override
+ public void draw() {
+ CellAttributes selectedColor = getTheme().getColor("teditor.selected");
+
+ int startCol = selectionColumn0;
+ int startRow = selectionLine0;
+ int endCol = selectionColumn1;
+ int endRow = selectionLine1;
+
+ if (((selectionColumn1 < selectionColumn0)
+ && (selectionLine1 <= selectionLine0))
+ || ((selectionColumn1 <= selectionColumn0)
+ && (selectionLine1 < selectionLine0))
+ ) {
+ // The user selected from bottom-right to top-left. Reverse the
+ // coordinates for the inverted section.
+ startCol = selectionColumn1;
+ startRow = selectionLine1;
+ endCol = selectionColumn0;
+ endRow = selectionLine0;
+ }
+
+ for (int i = 0; i < getHeight(); i++) {
+ // Background line
+ getScreen().hLineXY(0, i, getWidth(), ' ', defaultColor);
+
+ // Now draw document's line
+ if (topLine + i < document.getLineCount()) {
+ Line line = document.getLine(topLine + i);
+ int x = 0;
+ for (Word word: line.getWords()) {
+ // For now, we are cheating: draw outside the left region
+ // if needed and let screen do the clipping.
+ getScreen().putStringXY(x - leftColumn, i, word.getText(),
+ word.getColor());
+ x += word.getDisplayLength();
+ if (x - leftColumn > getWidth()) {
+ break;
+ }
+ }
+
+ // Highlight selected region
+ if (inSelection) {
+ if (startRow == endRow) {
+ if (topLine + i == startRow) {
+ for (x = startCol; x <= endCol; x++) {
+ putAttrXY(x - leftColumn, i, selectedColor);
+ }
+ }
+ } else {
+ if (topLine + i == startRow) {
+ for (x = startCol; x < line.getDisplayLength(); x++) {
+ putAttrXY(x - leftColumn, i, selectedColor);
+ }
+ } else if (topLine + i == endRow) {
+ for (x = 0; x <= endCol; x++) {
+ putAttrXY(x - leftColumn, i, selectedColor);
+ }
+ } else if ((topLine + i >= startRow)
+ && (topLine + i <= endRow)
+ ) {
+ for (x = 0; x < getWidth(); x++) {
+ putAttrXY(x, i, selectedColor);
+ }
+ }
+ }
+ }
+
+ }
+ }
+ }
+
+ // ------------------------------------------------------------------------
+ // TEditorWidget ----------------------------------------------------------
+ // ------------------------------------------------------------------------
+
+ /**
+ * Align visible area with document current line.
+ *
+ * @param topLineIsTop if true, make the top visible line the document
+ * current line if it was off-screen. If false, make the bottom visible
+ * line the document current line.
+ */
+ private void alignTopLine(final boolean topLineIsTop) {
+ int line = document.getLineNumber();
+
+ if ((line < topLine) || (line > topLine + getHeight() - 1)) {
+ // Need to move topLine to bring document back into view.
+ if (topLineIsTop) {
+ topLine = line - (getHeight() - 1);
+ if (topLine < 0) {
+ topLine = 0;
+ }
+ assert (topLine >= 0);
+ } else {
+ topLine = line;
+ assert (topLine >= 0);
+ }
+ }
+
+ /*
+ System.err.println("line " + line + " topLine " + topLine);
+ */
+
+ // Document is in view, let's set cursorY
+ assert (line >= topLine);
+ setCursorY(line - topLine);
+ alignCursor();
+ }
+
+ /**
+ * Align document current line with visible area.
+ *
+ * @param topLineIsTop if true, make the top visible line the document
+ * current line if it was off-screen. If false, make the bottom visible
+ * line the document current line.
+ */
+ private void alignDocument(final boolean topLineIsTop) {
+ int line = document.getLineNumber();
+ int cursor = document.getCursor();
+
+ if ((line < topLine) || (line > topLine + getHeight() - 1)) {
+ // Need to move document to ensure it fits view.
+ if (topLineIsTop) {
+ document.setLineNumber(topLine);
+ } else {
+ document.setLineNumber(topLine + (getHeight() - 1));
+ }
+ if (cursor < document.getCurrentLine().getDisplayLength()) {
+ document.setCursor(cursor);
+ }
+ }
+
+ /*
+ System.err.println("getLineNumber() " + document.getLineNumber() +
+ " topLine " + topLine);
+ */
+
+ // Document is in view, let's set cursorY
+ setCursorY(document.getLineNumber() - topLine);
+ alignCursor();
+ }
+
+ /**
+ * Align visible cursor with document cursor.
+ */
+ private void alignCursor() {
+ int width = getWidth();
+
+ int desiredX = document.getCursor() - leftColumn;
+ if (desiredX < 0) {
+ // We need to push the screen to the left.
+ leftColumn = document.getCursor();
+ } else if (desiredX > width - 1) {
+ // We need to push the screen to the right.
+ leftColumn = document.getCursor() - (width - 1);
+ }
+
+ /*
+ System.err.println("document cursor " + document.getCursor() +
+ " leftColumn " + leftColumn);
+ */
+
+
+ setCursorX(document.getCursor() - leftColumn);
+ }
+
+ /**
+ * Get the number of lines in the underlying Document.
+ *
+ * @return the number of lines
+ */
+ public int getLineCount() {
+ return document.getLineCount();
+ }
+
+ /**
+ * Get the current visible top row number. 1-based.
+ *
+ * @return the visible top row number. Row 1 is the first row.
+ */
+ public int getVisibleRowNumber() {
+ return topLine + 1;
+ }
+
+ /**
+ * Set the current visible row number. 1-based.
+ *
+ * @param row the new visible row number. Row 1 is the first row.
+ */
+ public void setVisibleRowNumber(final int row) {
+ assert (row > 0);
+ if ((row > 0) && (row < document.getLineCount())) {
+ topLine = row - 1;
+ alignDocument(true);
+ }
+ }
+
+ /**
+ * Get the current editing row number. 1-based.
+ *
+ * @return the editing row number. Row 1 is the first row.
+ */
+ public int getEditingRowNumber() {
+ return document.getLineNumber() + 1;
+ }
+
+ /**
+ * Set the current editing row number. 1-based.
+ *
+ * @param row the new editing row number. Row 1 is the first row.
+ */
+ public void setEditingRowNumber(final int row) {
+ assert (row > 0);
+ if ((row > 0) && (row < document.getLineCount())) {
+ document.setLineNumber(row - 1);
+ alignTopLine(true);
+ }
+ }
+
+ /**
+ * Set the current visible column number. 1-based.
+ *
+ * @return the visible column number. Column 1 is the first column.
+ */
+ public int getVisibleColumnNumber() {
+ return leftColumn + 1;
+ }
+
+ /**
+ * Set the current visible column number. 1-based.
+ *
+ * @param column the new visible column number. Column 1 is the first
+ * column.
+ */
+ public void setVisibleColumnNumber(final int column) {
+ assert (column > 0);
+ if ((column > 0) && (column < document.getLineLengthMax())) {
+ leftColumn = column - 1;
+ alignDocument(true);
+ }
+ }
+
+ /**
+ * Get the current editing column number. 1-based.
+ *
+ * @return the editing column number. Column 1 is the first column.
+ */
+ public int getEditingColumnNumber() {
+ return document.getCursor() + 1;
+ }
+
+ /**
+ * Set the current editing column number. 1-based.
+ *
+ * @param column the new editing column number. Column 1 is the first
+ * column.
+ */
+ public void setEditingColumnNumber(final int column) {
+ if ((column > 0) && (column < document.getLineLength())) {
+ document.setCursor(column - 1);
+ alignCursor();
+ }
+ }
+
+ /**
+ * Get the maximum possible row number. 1-based.
+ *
+ * @return the maximum row number. Row 1 is the first row.
+ */
+ public int getMaximumRowNumber() {
+ return document.getLineCount() + 1;
+ }
+
+ /**
+ * Get the maximum possible column number. 1-based.
+ *
+ * @return the maximum column number. Column 1 is the first column.
+ */
+ public int getMaximumColumnNumber() {
+ return document.getLineLengthMax() + 1;
+ }
+
+ /**
+ * Get the dirty value.
+ *
+ * @return true if the buffer is dirty
+ */
+ public boolean isDirty() {
+ return document.isDirty();
+ }
+
+ /**
+ * Save contents to file.
+ *
+ * @param filename file to save to
+ * @throws IOException if a java.io operation throws
+ */
+ public void saveToFilename(final String filename) throws IOException {
+ document.saveToFilename(filename);
+ }
+
+ /**
+ * Delete text within the selection bounds.
+ */
+ private void deleteSelection() {
+ if (inSelection == false) {
+ return;
+ }
+ inSelection = false;
+
+ int startCol = selectionColumn0;
+ int startRow = selectionLine0;
+ int endCol = selectionColumn1;
+ int endRow = selectionLine1;
+
+ if (((selectionColumn1 < selectionColumn0)
+ && (selectionLine1 <= selectionLine0))
+ || ((selectionColumn1 <= selectionColumn0)
+ && (selectionLine1 < selectionLine0))
+ ) {
+ // The user selected from bottom-right to top-left. Reverse the
+ // coordinates for the inverted section.
+ startCol = selectionColumn1;
+ startRow = selectionLine1;
+ endCol = selectionColumn0;
+ endRow = selectionLine0;
+ }
+
+ // Place the cursor on the selection end, and "press backspace" until
+ // the cursor matches the selection start.
+ document.setLineNumber(endRow);
+ document.setCursor(endCol + 1);
+ while (!((document.getLineNumber() == startRow)
+ && (document.getCursor() == startCol))
+ ) {
+ document.backspace();
+ }
+ alignTopLine(true);
+ }
+
+ /**
+ * Copy text within the selection bounds to clipboard.
+ */
+ private void copySelection() {
+ if (inSelection == false) {
+ return;
+ }
+
+ int startCol = selectionColumn0;
+ int startRow = selectionLine0;
+ int endCol = selectionColumn1;
+ int endRow = selectionLine1;
+
+ if (((selectionColumn1 < selectionColumn0)
+ && (selectionLine1 <= selectionLine0))
+ || ((selectionColumn1 <= selectionColumn0)
+ && (selectionLine1 < selectionLine0))
+ ) {
+ // The user selected from bottom-right to top-left. Reverse the
+ // coordinates for the inverted section.
+ startCol = selectionColumn1;
+ startRow = selectionLine1;
+ endCol = selectionColumn0;
+ endRow = selectionLine0;
+ }
+
+ StringBuilder sb = new StringBuilder();
+
+ if (endRow > startRow) {
+ // First line
+ String line = document.getLine(startRow).getRawString();
+ int x = 0;
+ for (int i = 0; i < line.length(); ) {
+ int ch = line.codePointAt(i);
+
+ if (x >= startCol) {
+ sb.append(Character.toChars(ch));
+ }
+ x += StringUtils.width(ch);
+ i += Character.charCount(ch);
+ }
+ sb.append("\n");
+
+ // Middle lines
+ for (int y = startRow + 1; y < endRow; y++) {
+ sb.append(document.getLine(y).getRawString());
+ sb.append("\n");
+ }
+
+ // Final line
+ line = document.getLine(endRow).getRawString();
+ x = 0;
+ for (int i = 0; i < line.length(); ) {
+ int ch = line.codePointAt(i);
+
+ if (x > endCol) {
+ break;
+ }
+
+ sb.append(Character.toChars(ch));
+ x += StringUtils.width(ch);
+ i += Character.charCount(ch);
+ }
+ } else {
+ assert (startRow == endRow);
+
+ // Only one line
+ String line = document.getLine(startRow).getRawString();
+ int x = 0;
+ for (int i = 0; i < line.length(); ) {
+ int ch = line.codePointAt(i);
+
+ if ((x >= startCol) && (x <= endCol)) {
+ sb.append(Character.toChars(ch));
+ }
+
+ x += StringUtils.width(ch);
+ i += Character.charCount(ch);
+ }
+ }
+
+ getClipboard().copyText(sb.toString());
+ }
+
+ // ------------------------------------------------------------------------
+ // EditMenuUser -----------------------------------------------------------
+ // ------------------------------------------------------------------------
+
+ /**
+ * Check if the cut menu item should be enabled.
+ *
+ * @return true if the cut menu item should be enabled
+ */
+ public boolean isEditMenuCut() {
+ return true;
+ }
+
+ /**
+ * Check if the copy menu item should be enabled.
+ *
+ * @return true if the copy menu item should be enabled
+ */
+ public boolean isEditMenuCopy() {
+ return true;
+ }
+
+ /**
+ * Check if the paste menu item should be enabled.
+ *
+ * @return true if the paste menu item should be enabled
+ */
+ public boolean isEditMenuPaste() {
+ return true;
+ }
+
+ /**
+ * Check if the clear menu item should be enabled.
+ *
+ * @return true if the clear menu item should be enabled
+ */
+ public boolean isEditMenuClear() {
+ return true;