Examples with BindTarget com.codename1.cloud.BindTarget used on opensource projects

Example 1 with BindTarget

use of com.codename1.cloud.BindTarget in project CodenameOne by codenameone.

the class CloudObject method bindProperty.

/**
 * Binds a property value within the given component to this cloud object, this means that
 * when the component changes the cloud object changes unless deferred. If the defer flag is
 * false all changes are stored in a temporary location and only "committed" once commitBindings()
 * is invoked.
 * @param cmp the component to bind
 * @param propertyName the name of the property in the bound component
 * @param attributeName the key within the cloud object
 * @param defer bind settings whether to defer the binding which requires developers to explicitly commit
 * the binding to perform the changes
 * @param objectLead if set to true the UI property is initialized from values in the CloudObject, if false
 * the cloud object property is initialized from the UI
 */
public void bindProperty(Component cmp, final String propertyName, final String attributeName, final int defer, boolean objectLead) {
    if (objectLead) {
        Object val = values.get(attributeName);
        Object cmpVal = cmp.getBoundPropertyValue(propertyName);
        if (val == null) {
            if (cmpVal != null) {
                cmp.setBoundPropertyValue(propertyName, null);
            }
        } else {
            if (cmpVal == null || !(val.equals(cmpVal))) {
                cmp.setBoundPropertyValue(propertyName, val);
            }
        }
    } else {
        Object val = values.get(attributeName);
        Object cmpVal = cmp.getBoundPropertyValue(propertyName);
        if (cmpVal == null) {
            if (val != null) {
                values.remove(attributeName);
                status = STATUS_MODIFIED;
            }
        } else {
            if (val == null || !(val.equals(cmpVal))) {
                values.put(attributeName, cmpVal);
                status = STATUS_MODIFIED;
            }
        }
    }
    BindTarget target = new BindTarget() {

        public void propertyChanged(Component source, String propertyName, Object oldValue, Object newValue) {
            switch(defer) {
                case BINDING_DEFERRED:
                    if (deferedValues == null) {
                        deferedValues = new Hashtable();
                    }
                    deferedValues.put(attributeName, newValue);
                    break;
                case BINDING_IMMEDIATE:
                    values.put(attributeName, newValue);
                    status = STATUS_MODIFIED;
                    break;
                case BINDING_AUTO_SAVE:
                    values.put(attributeName, newValue);
                    status = STATUS_MODIFIED;
                    CloudStorage.getInstance().save(CloudObject.this);
                    break;
            }
        }
    };
    cmp.bindProperty(propertyName, target);
    cmp.putClientProperty("CN1Bind" + propertyName, target);
}

Example 2 with BindTarget

use of com.codename1.cloud.BindTarget in project CodenameOne by codenameone.

the class CloudObject method unbindProperty.

/**
 * Releases the binding for the specific property name
 * @param cmp the component
 * @param propertyName the name of the property
 */
public void unbindProperty(Component cmp, String propertyName) {
    BindTarget t = (BindTarget) cmp.getClientProperty("CN1Bind" + propertyName);
    cmp.unbindProperty(propertyName, t);
    ;
}