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

Example 1 with BidiSegmentListener

use of org.eclipse.swt.custom.BidiSegmentListener in project eclipse.platform.swt by eclipse.

the class Test_org_eclipse_swt_custom_BidiSegmentListener method testListener.

private void testListener(final String message, final int[] segments, boolean exceptionExpected) {
    boolean exceptionThrown = false;
    BidiSegmentListener listener = event -> {
        assertEquals(message + " incorrect BidiSegmentEvent", 0, event.lineOffset);
        assertEquals(message + " incorrect BidiSegmentEvent", line, event.lineText);
        event.segments = segments;
        listenerCalled = true;
    };
    listenerCalled = false;
    try {
        text.addBidiSegmentListener(listener);
        text.getLocationAtOffset(0);
    } catch (IllegalArgumentException e) {
        exceptionThrown = true;
    } finally {
        text.removeBidiSegmentListener(listener);
    }
    if (exceptionExpected) {
        assertTrue(message + " expected exception not thrown", exceptionThrown);
    } else {
        assertFalse(message + " unexpected exception thrown", exceptionThrown);
    }
    if (SwtTestUtil.isBidi()) {
        assertTrue(message + " listener not called", listenerCalled);
    } else {
        assertFalse(message + " listener called when it shouldn't be", listenerCalled);
    }
}

Example 2 with BidiSegmentListener

use of org.eclipse.swt.custom.BidiSegmentListener in project egit by eclipse.

the class SpellcheckableMessageArea method configureHardWrap.

private void configureHardWrap() {
    if (shouldHardWrap()) {
        if (hardWrapSegmentListener == null) {
            final StyledText textWidget = getTextWidget();
            hardWrapSegmentListener = new BidiSegmentListener() {

                @Override
                public void lineGetSegments(BidiSegmentEvent e) {
                    if (e.widget == textWidget) {
                        int footerOffset = CommonUtils.getFooterOffset(textWidget.getText());
                        if (footerOffset >= 0 && e.lineOffset >= footerOffset) {
                            return;
                        }
                    }
                    int[] segments = calculateWrapOffsets(e.lineText, MAX_LINE_WIDTH);
                    if (segments != null) {
                        char[] segmentsChars = new char[segments.length];
                        Arrays.fill(segmentsChars, '\n');
                        e.segments = segments;
                        e.segmentsChars = segmentsChars;
                    }
                }
            };
            textWidget.addBidiSegmentListener(hardWrapSegmentListener);
            // XXX: workaround for https://bugs.eclipse.org/384886
            textWidget.setText(textWidget.getText());
            if (brokenBidiPlatformTextWidth != -1) {
                Layout restrictedWidthLayout = new Layout() {

                    @Override
                    protected Point computeSize(Composite composite, int wHint, int hHint, boolean flushCache) {
                        Point size = SpellcheckableMessageArea.this.getSize();
                        Rectangle trim = SpellcheckableMessageArea.this.computeTrim(0, 0, 0, 0);
                        size.x -= trim.width;
                        size.y -= trim.height;
                        if (size.x > brokenBidiPlatformTextWidth)
                            size.x = brokenBidiPlatformTextWidth;
                        return size;
                    }

                    @Override
                    protected void layout(Composite composite, boolean flushCache) {
                        Point size = computeSize(composite, SWT.DEFAULT, SWT.DEFAULT, flushCache);
                        textWidget.setBounds(0, 0, size.x, size.y);
                    }
                };
                setLayout(restrictedWidthLayout);
            }
        }
    } else if (hardWrapSegmentListener != null) {
        StyledText textWidget = getTextWidget();
        textWidget.removeBidiSegmentListener(hardWrapSegmentListener);
        // XXX: workaround for https://bugs.eclipse.org/384886
        textWidget.setText(textWidget.getText());
        hardWrapSegmentListener = null;
        if (brokenBidiPlatformTextWidth != -1)
            setLayout(new FillLayout());
    }
}

Example 3 with BidiSegmentListener

use of org.eclipse.swt.custom.BidiSegmentListener in project eclipse.platform.swt by eclipse.

the class Test_org_eclipse_swt_custom_BidiSegmentListener method testStyleRangeSegmenting.

private void testStyleRangeSegmenting(final int[] segments, int[] boldRanges) {
    boolean exceptionThrown = false;
    BidiSegmentListener listener = event -> {
        assertEquals(" incorrect BidiSegmentEvent", 0, event.lineOffset);
        assertEquals(" incorrect BidiSegmentEvent", line, event.lineText);
        event.segments = segments;
        listenerCalled = true;
    };
    listenerCalled = false;
    try {
        text.addBidiSegmentListener(listener);
        text.setStyleRange(null);
        for (int i = 0; i < boldRanges.length; i += 2) {
            StyleRange styleRange = new StyleRange(boldRanges[i], boldRanges[i + 1], null, null, SWT.BOLD);
            text.setStyleRange(styleRange);
        }
        text.getLocationAtOffset(0);
    } catch (IllegalArgumentException e) {
        exceptionThrown = true;
    } finally {
        text.removeBidiSegmentListener(listener);
    }
    assertFalse(" unexpected exception thrown", exceptionThrown);
    if (SwtTestUtil.isBidi()) {
        assertTrue(" listener not called", listenerCalled);
    } else {
        assertFalse(" listener called when it shouldn't be", listenerCalled);
    }
}

Example 4 with BidiSegmentListener

use of org.eclipse.swt.custom.BidiSegmentListener in project eclipse.platform.swt by eclipse.

the class Test_org_eclipse_swt_custom_StyledText method test_addBidiSegmentListenerLorg_eclipse_swt_custom_BidiSegmentListener.

@Test
public void test_addBidiSegmentListenerLorg_eclipse_swt_custom_BidiSegmentListener() {
    String line = "Line1";
    boolean exceptionThrown = false;
    BidiSegmentListener listener = event -> listenerCalled = true;
    try {
        text.addBidiSegmentListener(null);
    } catch (IllegalArgumentException e) {
        exceptionThrown = true;
    }
    assertTrue("Expected exception not thrown", exceptionThrown);
    listenerCalled = false;
    text.setText(line);
    text.addBidiSegmentListener(listener);
    // cause StyledText to call the BidiSegmentListener.
    text.getLocationAtOffset(0);
    if (SwtTestUtil.isBidi()) {
        assertTrue("Listener not called", listenerCalled);
    } else {
        assertFalse("Listener called when it shouldn't be", listenerCalled);
    }
    listenerCalled = false;
    text.removeBidiSegmentListener(listener);
    // cause StyledText to call the BidiSegmentListener.
    text.getLocationAtOffset(0);
    assertFalse("Listener not removed", listenerCalled);
}

Example 5 with BidiSegmentListener

use of org.eclipse.swt.custom.BidiSegmentListener in project egit by eclipse.

the class SpellcheckableMessageArea method computeBrokenBidiPlatformTextWidth.

private void computeBrokenBidiPlatformTextWidth(int textWidth) {
    class BidiSegmentListenerTester implements BidiSegmentListener {

        boolean called;

        @Override
        public void lineGetSegments(BidiSegmentEvent event) {
            called = true;
        }
    }
    BidiSegmentListenerTester tester = new BidiSegmentListenerTester();
    StyledText textWidget = getTextWidget();
    textWidget.addBidiSegmentListener(tester);
    // $NON-NLS-1$
    textWidget.setText(" ");
    textWidget.computeSize(SWT.DEFAULT, SWT.DEFAULT);
    textWidget.removeBidiSegmentListener(tester);
    brokenBidiPlatformTextWidth = tester.called ? -1 : textWidth;
}