Examples of com.ibm.icu.text.BidiClassifier

com.ibm.icu.text.BidiClassifier

Overrides default Bidi class values with custom ones.

The override mechanism requires to define a subclass of BidiClassifier which overrides the classifier method to assign customized Bidi classes.

This may be useful for assigning Bidi classes to PUA characters, or for special application needs. For instance, an application may want to handle all spaces like L or R characters (according to the base direction) when creating the visual ordering of logical lines which are part of a report organized in columns: there should not be interaction between adjacent cells.

To start using this customized classifier with a Bidi object, it must be specified by calling the Bidi.setCustomClassifier method; after that, the method classify of the custom BidiClassifier will be called by the UBA implementation any time the class of a character is to be determined.

@see Bidi#setCustomClassifier @draft ICU 3.8 @provisional This API might change or be removed in a future release.

                            : customClasses[c]);
        }
    }


    private void verifyClassifier(Bidi bidi) {
        BidiClassifier actualClassifier = bidi.getCustomClassifier();


        if (this.classifier == null) {
            if (actualClassifier != null) {
                errln("Bidi classifier is not yet set, but reported as not null");
            }
        } else {
            Class expectedClass = this.classifier.getClass();
            assertTrue("null Bidi classifier", actualClassifier != null);
            if (actualClassifier == null) {
                return;
            }
            if (expectedClass.isInstance(actualClassifier)) {
                Object context = classifier.getContext();
                if (context == null) {
                    if (actualClassifier.getContext() != null) {
                        errln("Unexpected context, should be null");
                    }
                } else {
                    assertEquals("Unexpected classifier context", context,
                                 actualClassifier.getContext());
                    assertEquals("Unexpected context's content",
                                 ((Integer)context).intValue(),
                                 bidi.getCustomizedClass('a'));
                }
            } else {
                errln("Bidi object reports classifier is an instance of " +
                      actualClassifier.getClass().getName() +
                      ",\nwhile the expected classifier should be an " +
                      "instance of " + expectedClass);
            }
        }
    }

Examples of com.ibm.icu.text.BidiClassifier

Related Classes of com.ibm.icu.text.BidiClassifier