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Tuesday, 28 January 2014

Disabling keyboard input in af:inputDate, restrict user to use calendar only - Oracle ADF

hello all,
this tutorial is about a requirement of restricting user to enter date through calendar only in ADF application
this trick was posted by Frank Nimphius (ADF Code Corner)

  • Drop a af:inputDate component on page from component pallete



  • Now set its background color so that it looks like disabled field

  • Now to make it's input field disable, we have to write a small javascript function, copy this function and paste in your page source (XML)

  • <af:resource type="javascript">
              function enableCalendarOnly(evt) {
                  evt.cancel();
              }
            </af:resource>
    

  • Now drop a af:clientListener under af:inputDate component to invoke javascript



  • Now set properties in af:clientListener as Method & Type



  •  Now run your page and see that input field is disabled for date component , now value can be selected using calendar only

 Cheers - Happy Learning :-)

Sunday, 19 January 2014

ADF Skinning | Hiding search icon of af:inputListOfValues using CSS & StyleClass

Hello All,
Hope all are doing good, this post talks about skinning inputListOfValues to hide it's search icon (magnifying glass)
we can use auto suggest feature in inputListOfValues so if we don't want to display that default search icon then what to do ?

  • inputListOfValues looks like this in ADF Faces
  •  I have created a page and dropped 2 inputListOfValues on page




  •  there is 2 types of requirement about hiding search icon
    1. Hide icon of all inputListOfValues(LOVs) available on page or application
    2. Hide icon of some selected fields
  • to do this we have to create a CSS (skin) in application
  • give relevant name of CSS file and set this file as default skin of application



  • Now to hide icon of selected inputListOfValues component in application, go to source of CSS file and just write this code
     

  • .TagSearchIconHidden af|inputListOfValues::search-icon-style
    {
    display: none;
    } 
    

  • Now go to page and paste TagSearchIconHidden in StyleClass property of lov component to hide it's icon, run your page and see, i have done this in my first LOV

  •  Now to hide icons of all lov component just change CSS file with this script

  • af|inputListOfValues::search-icon-style
    {
      background-image: none; 
    }
    

  • Now no need to set StyleClass, it is applicable to all lov components of application
 Cheers :-)

Creating new object in list (af:inputListOfValues) using 'createPopupId' feature- ADF 11g & 12c

Hello All ,
This post is about a good feature provided with inputListOfValues in ADF .
inputListOfValues is used where large and complex data is populated in list, this component supports search in list values
Suppose on opening list values you want to add one more value in list generally to do that you will  close the list and add a value in source table then again open list but this feature provide instant creation of list values

this functionality can be achieved in Combo Box with List of Values using customActions facet, i have posted about it
Create new look up data using List of Values (LOVs) in Oracle ADF

so this time it is about  inputListOfValues, see the steps to do

  • Created a fusion web application and business components  using Departments and Employees table of HR Schema

  • now i have created list of values on DepartmentId of Employees ViewObject referenced from Department ViewObject, display type is Input Text with List of Values



  •  drop Employees VO on page and run, it looks like this

  • Now i have dropped a popup on page and to create new value in list, i have dropped form of Departments ViewObject and a link to create it on dialog inside popup
     

  • select list of values component (Employee VO) in structure window and go to property inspector and set popUp id in a property called 'createPopupId'
  • After setting 'createPopupId' ,on running a commandToolbarButton appears in the LOV popup dialog box with a icon, this button's action triggers custom popUp (i have added before)
        on clicking on this icon-

  •  on create link i have just called createInsert for Departments ViewObject and on dialogListener , Execute

  • import oracle.adf.model.BindingContext;
    import oracle.binding.BindingContainer;
    import oracle.binding.OperationBinding;
    
    
    
        /**Method to get Bindings of current page
         * @return
         */
        public BindingContainer getBindings(){
            return BindingContext.getCurrent().getCurrentBindingsEntry();
        }
    
        /**Method to execute OperationBinding
         * @param operation
         * @return
         */
        public OperationBinding executeOperation(String operation){
            return getBindings().getOperationBinding(operation);
        }
    
        /**Method to create new Department
         * @param actionEvent
         */
        public void createDeptAction(ActionEvent actionEvent) {
           executeOperation("CreateInsert").execute();
        }
    

  • now created a new department using 'create' link and you can see value is appeared in list values

 Cheers :-)

Monday, 13 January 2014

Cool Feature- Using 'Placeholder' to set watermark hint on empty input fields in ADF/Jdeveloper 12C

Hello All,
This post talks about a very cool feature , introduced in ADF/Jdeveloper 12C.
Sometimes we need to set some hint on input fields as you can see in facebook sign up form, all fields are self descriptive


So now we can do that in ADF faces easily , in 12C there is a property named 'Placeholder' to define hint for empty fields
You can see in below form (ADF Faces)-


See the xml source of this simple form-




 <af:panelFormLayout id="pfl1">
                    <f:facet name="footer"/>
                    <af:inputText label="Country" id="it1" placeholder="Enter Country Name"
                                  contentStyle="width:200px;color:red;"/>
                    <af:inputDate label="Date" id="id1" placeholder="Select Date"
                                  contentStyle="width:200px;color:red;"/>
                    <af:inputListOfValues label="Country" popupTitle="Search and Result Dialog" id="ilov1"
                                          placeholder="Select Country" contentStyle="width:200px;color:red;"/>
                    <af:inputComboboxListOfValues label="Country" popupTitle="Search and Result Dialog" id="iclov1"
                                                  placeholder="Select Country" contentStyle="width:200px;color:red;"/>
                    <af:inputNumberSpinbox label="Value" id="ins1" placeholder="Enter Or Select"
                                           contentStyle="width:200px;color:red;"/>
                </af:panelFormLayout>

Cheers :-)

Friday, 10 January 2014

How to learn Oracle ADF from scratch ?

hello all,
if you are new to ADF and wanna learn this framework then you must be aware of good sources of Oracle ADF
See this-




Friday, 3 January 2014

Identifying Modified/newely added row in af:table, get all modified rows of viewobject in bean

Hello All,
first of all, a very Happy new year to everyone, learn more and more ADF


this tutorial is about a requirement of showing modified rows on page
Suppose if there is lot of data in af:table and user is modifying some rows then it must reflected immediately on page that which rows are modified for more clarity

Andrejus has also posted about it in 2010
http://andrejusb.blogspot.in/2010/04/changed-row-highlighting-in-oracle-adf.html

But this post talks about two requirements-
  1. Want to highlight modified rows only on page
  2. Want to get modified rows in managed bean
First One could be achieved without writing a single line of code only using expression, a row in table or view object has four state-



  • New
  • Modified
  • Un-Modified
  • Initialized


/* this expression returns state of current row in collection such as table or treeTable*/
#{row.row.entities[0].entityState} 

/*here row is reference variable of collection, this expression returns an int value if it is 
 2-Modified
 0-New
 1-Unmodified
-1-Initialized
*/

  • I'm using Departments table of HR Schema to implement this sample app
  • after business components configuration ,Drop departments VO from data control on page as af:table
  • Now to check row status , i have written following expression in inline style of af:column of af:table, so that it can check state of all rows of table 

  • #{row.row.entities[0].entityState==2 ? 'background-color:orange' : row.row.entities[0].entityState==0 ? 'background-color:darkgreen' : ''} 
    

  • Now Run your page and change any value of table
       After Updating Values in Row- see modified rows are highlighted
  •  Now you are done with first requirement , if we talk about second one, in case you want to get all modified rows in managed bean to perform some operation
  • To achieve this i have used a transient attribute in Departments view Object to store state of each row
  • Now in RowImpl of departments viewobject i have to write some code to get current state of Row, see the getter method of transient attribute in RowImpl

  •     /**
         * Gets the attribute value for the calculated attribute CheckRowStatus.
         * @return the CheckRowStatus
         */
        public Integer getCheckRowStatus() {
            byte entityState = this.getEntity(0).getEntityState();
            return new Integer(entityState);
    
            // return (Integer) getAttributeInternal(CHECKROWSTATUS);
        }
    

  • Now i have placed a button on page to get all modified rows and show a message on page through managed bean
  • See the method written in ApplicationModuleImpl class and then exposed to client to be used in managed bean action event

  •     /**Method to get all modified rows and store corresponding Department Name in an ArrayList
         * @return
         */
        public ArrayList<String> getModifiedRows() {
            ArrayList<String> deptNm = new ArrayList<String>();
            ViewObject deptVo = this.getDepartmentsView1();
            RowSetIterator deptIter = deptVo.createRowSetIterator(null);
            while (deptIter.hasNext()) {
                Row nextRow = deptIter.next();
                if (nextRow.getAttribute("CheckRowStatus") != null) {
                    Integer rowStatus = (Integer)nextRow.getAttribute("CheckRowStatus");
                    if (rowStatus == 2) {
                        deptNm.add(nextRow.getAttribute("DepartmentName").toString());
                    }
                }
            }
            return deptNm;
    
        }
    

  • Now call this method in managed bean through Binding Layer

  •     /**Method to get BindingContainer of current page
         * @return
         */
        public BindingContainer getBindings() {
            return BindingContext.getCurrent().getCurrentBindingsEntry();
        }
    
        /**Method to call AM method and to show modified rows on page in FacesMessage
         * @param actionEvent
         */
        public void getModifiedRows(ActionEvent actionEvent) {
            OperationBinding ob = getBindings().getOperationBinding("getModifiedRows");
            ob.execute();
            if (ob.getResult() != null) {
                ArrayList<String> deptName = (ArrayList<String>)ob.getResult();
                StringBuilder saveMsg =
                    new StringBuilder("<html><body><b><p style='color:red'>Modified Rows in Departments table are-</p></b>");
    
                saveMsg.append("<ul>");
                for (String name : deptName) {
                    System.out.println(name);
                    saveMsg.append("<li> <b>" + name + "</b></li>");
                }
    
                saveMsg.append("</ul><br>");
                saveMsg.append("</body></html>");
                FacesMessage msg = new FacesMessage(saveMsg.toString());
                FacesContext.getCurrentInstance().addMessage(null, msg);
            }
        }
    

  • Now again run this page and change some departments then click on get modified rows, it will show currently modified rows

Cheers- Download Sample App