Examples with PaintObjectListener org.eclipse.swt.custom.PaintObjectListener used on opensource projects

Example 1 with PaintObjectListener

use of org.eclipse.swt.custom.PaintObjectListener in project translationstudio8 by heartsome.

the class SegmentViewer method initListeners.

private void initListeners() {
    StyledText styledText = getTextWidget();
    // 去掉默认的复制、粘贴键绑定，以实现在复制、粘贴前对标记的处理
    styledText.setKeyBinding('V' | SWT.MOD1, SWT.NULL);
    styledText.setKeyBinding(SWT.INSERT | SWT.MOD2, SWT.NULL);
    styledText.setKeyBinding('C' | SWT.MOD1, SWT.NULL);
    styledText.setKeyBinding(SWT.INSERT | SWT.MOD1, SWT.NULL);
    getDocument().addDocumentListener(new IDocumentListener() {

        public void documentChanged(DocumentEvent e) {
        }

        public void documentAboutToBeChanged(DocumentEvent event) {
            String method = belongToUndoOrRedo();
            if (event.getLength() > 0 && method != null) {
                try {
                    String text = event.getDocument().get(event.getOffset(), event.getLength());
                    Matcher matcher = PATTERN.matcher(text);
                    List<InnerTag> cache = new ArrayList<InnerTag>();
                    while (matcher.find()) {
                        String placeHolder = matcher.group();
                        InnerTag innerTag = InnerTagUtil.getInnerTag(getInnerTagCacheList(), placeHolder);
                        if (innerTag != null && innerTag.isVisible()) {
                            innerTag.setVisible(false);
                            if ("undo".equals(method) && innerTag.getInnerTagBean().isWrongTag()) {
                                cache.add(innerTag);
                            }
                        }
                    }
                    for (InnerTag t : cache) {
                        innerTagCacheList.remove(t);
                        t.dispose();
                    }
                } catch (BadLocationException e) {
                    e.printStackTrace();
                }
            }
        }

        /**
			 * 是否属于撤销或者重做的操作。
			 * @return ;
			 */
        private String belongToUndoOrRedo() {
            IUndoManager undoManager = getUndoManager();
            if (undoManager != null) {
                StackTraceElement[] stackTraceElements = new Throwable().getStackTrace();
                for (StackTraceElement stackTraceElement : stackTraceElements) {
                    if (undoManager.getClass().getName().equals(stackTraceElement.getClassName())) {
                        String methodName = stackTraceElement.getMethodName();
                        if ("undo".equals(methodName) || "redo".equals(methodName)) {
                            return methodName;
                        }
                    }
                }
            }
            return null;
        }
    });
    /**
		 * 处理在显示非打印隐藏字符的情况光标移动问题。兼容非打印字符替换符号
		 */
    styledText.addKeyListener(new KeyListener() {

        public void keyReleased(KeyEvent e) {
            if (!XliffEditorParameter.getInstance().isShowNonpirnttingCharacter()) {
                return;
            }
            if (e.stateMask == SWT.NONE && (e.keyCode == SWT.ARROW_UP || e.keyCode == SWT.ARROW_DOWN)) {
                StyledText styledText = (StyledText) e.widget;
                int offset = styledText.getCaretOffset();
                if (offset < 1 || offset >= styledText.getCharCount()) {
                    return;
                }
                char c = styledText.getText().charAt(offset);
                char _c = styledText.getText().charAt(offset - 1);
                if (c == '\n' && (_c == Constants.LINE_SEPARATOR_CHARACTER)) {
                    styledText.setCaretOffset(offset - 1);
                }
            }
        }

        public void keyPressed(KeyEvent e) {
            if (!XliffEditorParameter.getInstance().isShowNonpirnttingCharacter()) {
                return;
            }
            if (e.stateMask == SWT.NONE && (e.keyCode == SWT.ARROW_LEFT || e.keyCode == SWT.ARROW_RIGHT)) {
                StyledText styledText = (StyledText) e.widget;
                int offset = styledText.getCaretOffset();
                if (offset < 1 || offset >= styledText.getCharCount()) {
                    return;
                }
                char c = styledText.getText().charAt(offset);
                char _c = styledText.getText().charAt(offset - 1);
                if ((c == '​' && (_c == Constants.TAB_CHARACTER || _c == Constants.SPACE_CHARACTER)) || (c == '\n' && (_c == Constants.LINE_SEPARATOR_CHARACTER))) {
                    if (e.keyCode == SWT.ARROW_LEFT) {
                        styledText.setCaretOffset(offset - 1);
                    } else if (e.keyCode == SWT.ARROW_RIGHT) {
                        styledText.setCaretOffset(offset + 1);
                    }
                }
            } else if (e.stateMask == SWT.CTRL && (e.keyCode == SWT.ARROW_LEFT || e.keyCode == SWT.ARROW_RIGHT)) {
                // 单独对 ctrl + right ,ctrl + left 换行的处理
                StyledText styledText = (StyledText) e.widget;
                int offset = styledText.getCaretOffset();
                char c = styledText.getText().charAt(offset);
                if (offset < 1 || offset >= styledText.getCharCount()) {
                    return;
                }
                char _c = styledText.getText().charAt(offset - 1);
                if (c == '\n' && (_c == Constants.LINE_SEPARATOR_CHARACTER)) {
                    if (e.keyCode == SWT.ARROW_LEFT) {
                        styledText.setCaretOffset(offset - 1);
                    } else if (e.keyCode == SWT.ARROW_RIGHT) {
                        styledText.setCaretOffset(offset + 1);
                    }
                }
            } else if ((e.stateMask == SWT.SHIFT || e.stateMask == (SWT.SHIFT | SWT.CTRL)) && (e.keyCode == SWT.ARROW_LEFT || e.keyCode == SWT.ARROW_RIGHT)) {
                StyledText styledText = (StyledText) e.widget;
                int offset = styledText.getCaretOffset();
                char c = styledText.getText().charAt(offset);
                if (offset < 1 || offset >= styledText.getCharCount()) {
                    return;
                }
                char _c = styledText.getText().charAt(offset - 1);
                if ((c == '​' && (_c == Constants.TAB_CHARACTER || _c == Constants.SPACE_CHARACTER)) || (c == '\n' && (_c == Constants.LINE_SEPARATOR_CHARACTER))) {
                    if (e.keyCode == SWT.ARROW_LEFT) {
                        styledText.invokeAction(ST.SELECT_COLUMN_PREVIOUS);
                    } else if (e.keyCode == SWT.ARROW_RIGHT) {
                        styledText.invokeAction(ST.SELECT_COLUMN_NEXT);
                    }
                }
            } else if ((e.stateMask == SWT.SHIFT) && (e.keyCode == SWT.ARROW_UP || e.keyCode == SWT.ARROW_DOWN)) {
                StyledText styledText = (StyledText) e.widget;
                int offset = styledText.getCaretOffset();
                char c = styledText.getText().charAt(offset);
                if (offset < 1 || offset >= styledText.getCharCount()) {
                    return;
                }
                char _c = styledText.getText().charAt(offset - 1);
                if (c == '\n' && (_c == Constants.LINE_SEPARATOR_CHARACTER)) {
                    if (e.keyCode == SWT.ARROW_UP) {
                        styledText.invokeAction(ST.SELECT_COLUMN_PREVIOUS);
                    } else if (e.keyCode == SWT.ARROW_DOWN) {
                        styledText.invokeAction(ST.SELECT_COLUMN_NEXT);
                    }
                }
            }
        }
    });
    /**
		 * 处理在显示非打印隐藏字符的情况光标移动问题。兼容非打印字符替换符号
		 */
    styledText.addMouseListener(new MouseListener() {

        public void mouseUp(MouseEvent e) {
        }

        public void mouseDown(MouseEvent e) {
            if (!XliffEditorParameter.getInstance().isShowNonpirnttingCharacter()) {
                return;
            }
            StyledText styledText = (StyledText) e.widget;
            int offset = styledText.getCaretOffset();
            if (offset < 1 || offset >= styledText.getCharCount()) {
                return;
            }
            // hidden character
            char c = styledText.getText().charAt(offset);
            // display character
            char _c = styledText.getText().charAt(offset - 1);
            if ((_c == Constants.LINE_SEPARATOR_CHARACTER || _c == Constants.TAB_CHARACTER || _c == Constants.SPACE_CHARACTER) && (c == '\n' || c == '​')) {
                styledText.setCaretOffset(offset + 1);
            }
        }

        public void mouseDoubleClick(MouseEvent e) {
        }
    });
    /**
		 * 选择内容时对非打印字符的处理
		 */
    styledText.addMouseMoveListener(new MouseMoveListener() {

        public void mouseMove(MouseEvent e) {
            StyledText styledText = (StyledText) e.widget;
            int offset = styledText.getCaretOffset();
            if (offset < 1 || offset >= styledText.getCharCount()) {
                return;
            }
            char c = styledText.getText().charAt(offset);
            char _c = styledText.getText().charAt(offset - 1);
            if ((c == '​' && (_c == Constants.TAB_CHARACTER || _c == Constants.SPACE_CHARACTER)) || (c == '\n' && (_c == Constants.LINE_SEPARATOR_CHARACTER))) {
                int caretOffset = styledText.getCaretOffset();
                Point p = styledText.getSelection();
                if (caretOffset == p.x) {
                    styledText.invokeAction(ST.SELECT_COLUMN_PREVIOUS);
                } else if (caretOffset == p.y) {
                    styledText.invokeAction(ST.SELECT_COLUMN_NEXT);
                }
            }
        }
    });
    styledText.addVerifyListener(new VerifyListener() {

        public void verifyText(final VerifyEvent e) {
            String t = e.text;
            if ((e.start == e.end) || (e.start != e.end && !e.text.equals(""))) {
                // 添加内容时
                if (XliffEditorParameter.getInstance().isShowNonpirnttingCharacter()) {
                    t = t.replace("\t", Constants.TAB_CHARACTER + "​").replace(" ", Constants.SPACE_CHARACTER + "​");
                    t = t.replace(System.getProperty("line.separator"), "\n");
                    StringBuffer bf = new StringBuffer(t);
                    int i = bf.indexOf("\n");
                    if (i != -1) {
                        if (i == 0) {
                            bf.insert(i, Constants.LINE_SEPARATOR_CHARACTER);
                        } else if (i != 0 && bf.charAt(i - 1) != Constants.LINE_SEPARATOR_CHARACTER) {
                            bf.insert(i, Constants.LINE_SEPARATOR_CHARACTER);
                        }
                        i = bf.indexOf("\n", i + 1);
                    }
                    e.text = bf.toString();
                }
                return;
            }
            final StyledText styledText = (StyledText) e.widget;
            final String text = styledText.getText(e.start, e.end - 1);
            final Matcher matcher = PATTERN.matcher(text);
            if (matcher.find()) {
                // 被删除的部分中存在标记的的情况，进行特殊处理。
                if (isSource()) {
                    e.doit = false;
                    setToolTipMessage(Messages.getString("innertag.SegmentViewer.msg1"));
                    return;
                }
                matcher.reset();
                styledText.getDisplay().syncExec(new Runnable() {

                    public void run() {
                        deleteInnerTagInPairs(e, matcher);
                    }
                });
            }
            if (XliffEditorParameter.getInstance().isShowNonpirnttingCharacter()) {
                if (text.length() == 1 && (text.equals("\n") || text.indexOf('​') != -1)) {
                    char c = styledText.getText().charAt(e.start - 1);
                    if (c == Constants.LINE_SEPARATOR_CHARACTER || c == Constants.SPACE_CHARACTER || c == Constants.TAB_CHARACTER) {
                        styledText.replaceTextRange(e.start - 1, 2, "");
                        e.doit = false;
                    }
                } else if (text.length() == 1 && (text.indexOf(Constants.LINE_SEPARATOR_CHARACTER) != -1 || text.indexOf(Constants.TAB_CHARACTER) != -1 || text.indexOf(Constants.TAB_CHARACTER) != -1)) {
                    char c = styledText.getText().charAt(e.start + 1);
                    if (c == '\n' || c == '​') {
                        styledText.replaceTextRange(e.start, 2, "");
                        e.doit = false;
                    }
                }
            }
        }

        /**
			 * 成对删除内部标记
			 */
        private void deleteInnerTagInPairs(final VerifyEvent e, Matcher matcher) {
            StyledText styledText = (StyledText) e.widget;
            // 记录被删除的标记的索引。
            ArrayList<Integer> tagIndexes = new ArrayList<Integer>();
            while (matcher.find()) {
                String placeHolder = matcher.group();
                InnerTag innerTag = InnerTagUtil.getInnerTag(SegmentViewer.this.getInnerTagCacheList(), placeHolder);
                if (innerTag != null && innerTag.isVisible()) {
                    innerTag.setVisible(false);
                    // 保存成对标记中未完全删除的标记索引
                    TagType tagType = innerTag.getInnerTagBean().getType();
                    if (tagType == TagType.START || tagType == TagType.END) {
                        // 处理成对标记的成对删除
                        // 标记索引
                        Integer tagIndex = Integer.valueOf(innerTag.getInnerTagBean().getIndex());
                        if (tagIndexes.contains(tagIndex)) {
                            // 如果已经包含此索引，说明成对标记的2个部分都已经删除。
                            tagIndexes.remove(tagIndex);
                        } else {
                            // 如果未包含此索引，则说明只删除了一个部分（开始或结束）的标记。
                            tagIndexes.add(tagIndex);
                        }
                    }
                }
            }
            if (!tagIndexes.isEmpty()) {
                // 存在未删除的情况。
                getUndoManager().beginCompoundChange();
                // 上一步已经修改，取消修改操作。
                e.doit = false;
                // 替换改动内容
                styledText.getContent().replaceTextRange(e.start, e.end - e.start, e.text);
                for (int i = 0; i < errorTagStart; i++) {
                    // 删除成对标记中未被删除的部分。
                    InnerTag innerTag = innerTagCacheList.get(i);
                    if (innerTag != null && innerTag.isVisible()) {
                        if (tagIndexes.contains(innerTag.getInnerTagBean().getIndex())) {
                            innerTag.setVisible(false);
                            String placeHolder = placeHolderBuilder.getPlaceHolder(null, i);
                            int start = -1;
                            if ((start = styledText.getText().indexOf(placeHolder)) != -1) {
                                styledText.getContent().replaceTextRange(start, placeHolder.length(), "");
                            }
                            tagIndexes.remove(Integer.valueOf(innerTag.getInnerTagBean().getIndex()));
                            if (tagIndexes.isEmpty()) {
                                break;
                            }
                        }
                    }
                }
                getUndoManager().endCompoundChange();
                /**
					 * 通知更新主菜单（actionBar）中“撤销重做”等菜单项的状态，参见
					 * net.heartsome.cat.ts.ui.xliffeditor.nattable.editor.XLIFFEditorActionHandler
					 */
                styledText.notifyListeners(SWT.Selection, null);
            }
        }
    });
    /**
		 * 重绘时，将当前文本段中存在的内部标记对应的控件显示出来
		 */
    styledText.addPaintObjectListener(new PaintObjectListener() {

        public void paintObject(PaintObjectEvent event) {
            StyleRange styleRange = event.style;
            if (styleRange != null) {
                String text = ((StyledText) event.widget).getText();
                int end = styleRange.start + styleRange.length;
                if (text.length() < end) {
                    return;
                }
                String styledString = text.substring(styleRange.start, end);
                Matcher matcher = PATTERN.matcher(styledString);
                if (matcher.matches()) {
                    InnerTag tag = InnerTagUtil.getInnerTag(SegmentViewer.this.getInnerTagCacheList(), styledString);
                    if (tag != null) {
                        if (!tag.isVisible()) {
                            tag.setVisible(true);
                        }
                        // int y = event.y + event.ascent - styleRange.metrics.ascent;
                        int lineHeight = getTextWidget().getLineHeight();
                        // innerTag.setLocation(event.x + SEGMENT_LINE_SPACING / 2, event.y + SEGMENT_LINE_SPACING /
                        // 2 /* 行距的一半 */);
                        int y = event.y + lineHeight / 2 - tag.getBounds().height / 2;
                        tag.setLocation(event.x + SEGMENT_LINE_SPACING, y);
                    }
                }
            }
        }
    });
    /**
		 * 鼠标移动时，清除错误消息。
		 */
    styledText.addMouseMoveListener(new MouseMoveListener() {

        public void mouseMove(MouseEvent e) {
            if (getTextWidget().getToolTipText() != null && getTextWidget().getToolTipText().length() > 0) {
                setToolTipMessage("");
            }
        }
    });
    // 处理修改内容时，需要非打印字符添加样式。
    styledText.addListener(SWT.Modify, new Listener() {

        public void handleEvent(Event event) {
            if (!XliffEditorParameter.getInstance().isShowNonpirnttingCharacter()) {
                return;
            }
            String s = event.text;
            Matcher matcher = Constants.NONPRINTING_PATTERN.matcher(s);
            TextStyle style = new TextStyle(null, GUIHelper.getColor(new RGB(100, 100, 100)), null);
            List<StyleRange> ranges = new ArrayList<StyleRange>();
            while (matcher.find()) {
                int start = event.start + matcher.start();
                StyleRange range = new StyleRange(style);
                range.start = start;
                range.length = 1;
                ranges.add(range);
            }
            for (StyleRange range : ranges) {
                getTextWidget().setStyleRange(range);
            }
        }
    });
    styledText.addListener(SWT.Selection, new Listener() {

        public void handleEvent(Event event) {
            for (InnerTag tag : innerTagCacheList) {
                if (tag.isSelected()) {
                    tag.setSelected(false);
                    tag.redraw();
                }
            }
            String styledString = getTextWidget().getSelectionText();
            Matcher matcher = PATTERN.matcher(styledString);
            while (matcher.find()) {
                String s = matcher.group();
                InnerTag tag = InnerTagUtil.getInnerTag(SegmentViewer.this.getInnerTagCacheList(), s);
                if (tag != null) {
                    tag.setSelected(true);
                    tag.redraw();
                }
            }
        }
    });
}