Java AccessibleContext类代码示例

import javax.accessibility.AccessibleContext; //导入依赖的package包/类
@Override
public AccessibleContext getAccessibleContext() {

    if( null == accessibleContext ) {
        accessibleContext = new AccessibleJComponent() {
            @Override
            public AccessibleRole getAccessibleRole() {
                return AccessibleRole.SWING_COMPONENT;
            }
        };
    
        accessibleContext.setAccessibleName( NbBundle.getMessage(DescriptionComponent.class, "ACS_Description") );
        accessibleContext.setAccessibleDescription( NbBundle.getMessage(DescriptionComponent.class, "ACSD_Description") );
    }
    
    return accessibleContext;
}
 

import javax.accessibility.AccessibleContext; //导入依赖的package包/类
public AccessibleContext getAccessibleContext() {
    AccessibleContext ctx = super.getAccessibleContext();
    if (ctx != null) {
        // Lazily set the accessible name and desc
        // since JEditorPane.AccessibleJEditorPane resp. AccessibleJTextComponent
        // attaches document listener which prevents cloned JEPs from being GCed.
        ctx.setAccessibleName(
                NbBundle.getMessage(CloneableEditor.class, "ACS_CloneableEditor_QuietEditorPane", this.getName())
        );
        ctx.setAccessibleDescription(
                NbBundle.getMessage(
                        CloneableEditor.class, "ACSD_CloneableEditor_QuietEditorPane",
                        this.getName()
                )
        );
    }
    return ctx;
}
 

import javax.accessibility.AccessibleContext; //导入依赖的package包/类
@NbBundle.Messages({"ACSN_HorizontalScrollbar=Horizontal scrollbar of the results panel",
    "ACSN_VerticalScrollbar=Vertical scrollbar of the results panel"})
private void initAccessibility() {
    AccessibleContext accessCtx;

    accessCtx = getAccessibleContext();
    accessCtx.setAccessibleName(Bundle.ACSN_ResultPanelTree());
    accessCtx.setAccessibleDescription(Bundle.ACSD_ResultPanelTree());

    accessCtx = treeView.getHorizontalScrollBar().getAccessibleContext();
    accessCtx.setAccessibleName(Bundle.ACSN_HorizontalScrollbar());

    accessCtx = treeView.getVerticalScrollBar().getAccessibleContext();
    accessCtx.setAccessibleName(Bundle.ACSN_VerticalScrollbar());

}
 

import javax.accessibility.AccessibleContext; //导入依赖的package包/类
@Override
public void setVisible(boolean aFlag) {
    super.setVisible(aFlag);
    if (isVisible()) {
        SwingUtilities.invokeLater(new Runnable() {
            @Override public void run() {
                updateAccessible();
            }
        });
    } else {
        AccessibleContext editorAC = editorComponent.getAccessibleContext();
        if (accessibleLabel != null) {
            editorAC.firePropertyChange(AccessibleContext.ACCESSIBLE_ACTIVE_DESCENDANT_PROPERTY, accessibleLabel, null);
            editorAC.firePropertyChange(AccessibleContext.ACCESSIBLE_CHILD_PROPERTY, accessibleLabel, null);
        }
        if (accessibleFakeLabel != null) {
            editorAC.firePropertyChange(AccessibleContext.ACCESSIBLE_CHILD_PROPERTY, accessibleFakeLabel, null);
        }
    }
}
 

import javax.accessibility.AccessibleContext; //导入依赖的package包/类
private void updateAccessible() {
    AccessibleContext editorAC = editorComponent.getAccessibleContext();
    if (accessibleFakeLabel == null) {
        accessibleFakeLabel = new JLabel(""); //NOI18N
        editorAC.firePropertyChange(AccessibleContext.ACCESSIBLE_CHILD_PROPERTY, null, accessibleFakeLabel);
    }
    JLabel orig = accessibleLabel;
    editorAC.firePropertyChange(AccessibleContext.ACCESSIBLE_ACTIVE_DESCENDANT_PROPERTY, accessibleLabel, accessibleFakeLabel);
    Object selectedValue = getSelectedValue();
    String accName = null;
    if (selectedValue instanceof Accessible) {
        AccessibleContext ac = ((Accessible) selectedValue).getAccessibleContext();
        if (ac != null) {
            accName = ac.getAccessibleName();
        }
    }
    if (accName == null && selectedValue != null) {
        accName = selectedValue.toString();
    }
    if (accName != null) {
        accessibleLabel = new JLabel(LocaleSupport.getString("ACSN_CompletionView_SelectedItem") + accName); //NOI18N
        editorAC.firePropertyChange(AccessibleContext.ACCESSIBLE_CHILD_PROPERTY, null, accessibleLabel);
        editorAC.firePropertyChange(AccessibleContext.ACCESSIBLE_ACTIVE_DESCENDANT_PROPERTY, accessibleFakeLabel, accessibleLabel);
        if (orig != null) {
            editorAC.firePropertyChange(AccessibleContext.ACCESSIBLE_CHILD_PROPERTY, orig, null);
        }
    }
}
 

import javax.accessibility.AccessibleContext; //导入依赖的package包/类
public AccessibleContext getAccessibleContext() {
    if (accessibleContext == null) {
        accessibleContext = new JComponent.AccessibleJComponent() {
            public AccessibleRole getAccessibleRole() {
                return AccessibleRole.PANEL;
            }

            public String getAccessibleName() {
                return Bundle.ProfilerWindow_accessName(getDisplayName());
            }

            public String getAccessibleDescription() {
                ProfilerFeature selected = featuresView == null ? null :
                                featuresView.getSelectedFeature();
                return selected == null ? WelcomePanel.CAPTION :
                       (selected.getName() + " " + selected.getDescription()); // NOI18N
            }
        };
    }
    return accessibleContext;
}
 

import javax.accessibility.AccessibleContext; //导入依赖的package包/类
public AccessibleContext getAccessibleContext() {
    if (accessibleContext == null) {
        accessibleContext = new JComponent.AccessibleJComponent() {
                    public AccessibleRole getAccessibleRole() {
                        return AccessibleRole.PANEL;
                    }

                    public String getAccessibleName() {
                        if (accessibleName != null) {
                            return accessibleName;
                        }

                        return getName();
                    }

                    /* Fix for 19344: Null accessible decription of all TopComponents on JDK1.4 */
                    public String getToolTipText() {
                        return TopComponent.this.getToolTipText();
                    }
                };
    }

    return accessibleContext;
}
 

import javax.accessibility.AccessibleContext; //导入依赖的package包/类
private static void test() {

        int N = 5;
        JTabbedPane tabbedPane = new JTabbedPane();

        for (int i = 0; i < N; i++) {
            tabbedPane.addTab("Title: " + i, new JLabel("Component: " + i));
        }

        for (int i = 0; i < tabbedPane.getTabCount(); i++) {
            Component child = tabbedPane.getComponentAt(i);

            AccessibleContext ac = child.getAccessibleContext();
            if (ac == null) {
                throw new RuntimeException("Accessible Context is null!");
            }

            int index = ac.getAccessibleIndexInParent();
            Accessible parent = ac.getAccessibleParent();

            if (parent.getAccessibleContext().getAccessibleChild(index) != child) {
                throw new RuntimeException("Wrong getAccessibleIndexInParent!");
            }
        }
    }
 

import javax.accessibility.AccessibleContext; //导入依赖的package包/类
@Override
public AccessibleContext getAccessibleContext() {
    if (accessibleContext == null) {
        accessibleContext = new AccessibleJComponent() {
                    @Override
                    public AccessibleRole getAccessibleRole() {
                        // is it really a panel?
                        return AccessibleRole.PANEL;
                    }

                    @Override
                    public String getAccessibleName() {
                        if (accessibleName != null) {
                            return accessibleName;
                        }
                        return getName();
                    }
                };
    }

    return accessibleContext;
}
 

import javax.accessibility.AccessibleContext; //导入依赖的package包/类
static void setSelectedText(final Accessible a, final Component c, final String newText) {
    if (a == null) return;

    CAccessibility.invokeLater(new Runnable() {
        public void run() {
            final AccessibleContext ac = a.getAccessibleContext();
            if (ac == null) return;

            final AccessibleEditableText aet = ac.getAccessibleEditableText();
            if (aet == null) return;

            final int selectionStart = aet.getSelectionStart();
            final int selectionEnd = aet.getSelectionEnd();
            aet.replaceText(selectionStart, selectionEnd, newText);
        }
    }, c);
}
 

import javax.accessibility.AccessibleContext; //导入依赖的package包/类
static void setSelectedTextRange(final Accessible a, final Component c, final int startIndex, final int endIndex) {
    if (a == null) return;

    CAccessibility.invokeLater(new Runnable() {
        public void run() {
            final AccessibleContext ac = a.getAccessibleContext();
            if (ac == null) return;

            final AccessibleEditableText aet = ac.getAccessibleEditableText();
            if (aet == null) return;

            final boolean validRange = (startIndex >= 0) && (endIndex >= startIndex) && (endIndex <= aet.getCharCount());
            if (!validRange) return;

            aet.selectText(startIndex, endIndex);
        }
    }, c);
}
 

import javax.accessibility.AccessibleContext; //导入依赖的package包/类
static int getCharacterIndexAtPosition(final Accessible a, final Component c, final int x, final int y) {
    if (a == null) return 0;

    return CAccessibility.invokeAndWait(new Callable<Integer>() {
        public Integer call() throws Exception {
            final AccessibleContext ac = a.getAccessibleContext();
            if (ac == null) return null;
            final AccessibleText at = ac.getAccessibleText();
            if (at == null) return null;
            // (x, y) passed in as java screen coords - (0, 0) at upper-left corner of screen.
            // Convert to java component-local coords
            final Point componentLocation = ac.getAccessibleComponent().getLocationOnScreen();
            final int localX = x - (int)componentLocation.getX();
            final int localY = y - (int)componentLocation.getY();

            return at.getIndexAtPoint(new Point(localX, localY));
        }
    }, c);
}
 

import javax.accessibility.AccessibleContext; //导入依赖的package包/类
static int[] getSelectedTextRange(final Accessible a, final Component c) {
    if (a == null) return new int[2];

    return CAccessibility.invokeAndWait(new Callable<int[]>() {
        public int[] call() {
            final AccessibleContext ac = a.getAccessibleContext();
            if (ac == null) return new int[2];

            final AccessibleText at = ac.getAccessibleText();
            if (at == null) return new int[2];

            final int[] ret = new int[2];
            ret[0] = at.getSelectionStart();
            ret[1] = at.getSelectionEnd();
            return ret;
        }
    }, c);
}
 

import javax.accessibility.AccessibleContext; //导入依赖的package包/类
static String getSelectedText(final Accessible a, final Component c) {
    if (a == null) return null;

    return CAccessibility.invokeAndWait(new Callable<String>() {
        public String call() throws Exception {
            final AccessibleContext ac = a.getAccessibleContext();
            if (ac == null) return null;

            final AccessibleText at = ac.getAccessibleText();
            if (at == null) return null;

            return at.getSelectedText();
        }
    }, c);
}
 

import javax.accessibility.AccessibleContext; //导入依赖的package包/类
@Override
public AccessibleContext getAccessibleContext() {
    if (accessibleContext == null) {
        accessibleContext = new AccessibleJComponent() {
            public @Override AccessibleRole getAccessibleRole() {
                return AccessibleRole.PANEL;
            }
        };
        accessibleContext.setAccessibleName(NbBundle.getMessage(CodeFoldingSideBar.class, "ACSN_CodeFoldingSideBar")); //NOI18N
    accessibleContext.setAccessibleDescription(NbBundle.getMessage(CodeFoldingSideBar.class, "ACSD_CodeFoldingSideBar")); //NOI18N
    }
    return accessibleContext;
}