[SalesForce] how can I disable a checkbox on a visualforce page through conditions

                </apex:column>
                <apex:column headerValue="Grant" rendered="{!if(AND(wrp.oppContRole.contact.Portal_Access_Granted__c == null , wrp.oppContRole.contact.Portal_Access_Grant_Request__c == null),true,false)}">
                    <apex:inputCheckbox value="{!wrp.grant}" disabled="false"/>
                </apex:column>
                <apex:column headerValue="Grant" rendered="{!if(AND(wrp.oppContRole.contact.Portal_Access_Granted__c == null, wrp.oppContRole.contact.Portal_Access_Grant_Request__c == null),true,false)}">
                    <apex:inputCheckbox value="{!wrp.grant}" disabled="true"/>
                </apex:column>
                <apex:column headerValue="Revoke" rendered="{!if(AND(wrp.oppContRole.contact.Portal_Access_Revoked__c == null , wrp.oppContRole.contact.Portal_Access_Revoke_Request__c == null),true,false)}">
                    <apex:inputCheckbox value="{!wrp.revoke}" disabled="false"  onchange="var theTextBox = document.getElementById('{!$Component.check}'); theTextBox.disabled = theTextBox.disabled ? false : true;"/>
                </apex:column>
                <apex:column headerValue="Revoke" rendered="{!if(AND(wrp.oppContRole.contact.Portal_Access_Revoked__c == null , wrp.oppContRole.contact.Portal_Access_Revoke_Request__c == null),true,false)}">
                    <apex:inputCheckbox value="{!wrp.revoke}" disabled="true"  onchange="var theTextBox = document.getElementById('{!$Component.check}'); theTextBox.disabled = theTextBox.disabled ? false : true;"/>
                </apex:column>

If Portal_Access_Grant_Request__c(field in contact&& and working over opp.Contact Roles ) is filled in the appropriate contact then the checkbox(created by wrapper class and showen over vf) must be checked true and must be greyed out(read only)
and some more condition in vf

right now it showing two grant row as well as revoke bt i want one and c

Best Answer

You can't directly disable a checkbox in Visualforce using Apex. One is on the client-side, the other is on the server. As such, if you want them to interact, you have to send Visualforce the data it needs to make the decision to disable the checkbox. Here's a trivial example of this:

public class q192000 {
    // The wrapper class
    public class Wrapper {
        public Boolean checkbox1 { get; set; }
        public Boolean checkbox2 { get; set; }
        public Boolean checkbox2disabled { get; set; }
        public Wrapper() {
            checkbox1 = checkbox2 = checkbox2disabled = false;
        }
        // Called to update checkbox2's status
        public void updateStatus() {
            checkbox2disabled = checkbox1;
            if(checkbox1) {
                checkbox2 = true;
            }
        }
    }
    // Items to show on the page
    public Wrapper[] items { get; set; }
    // Page's initialization
    public q192000() {
        items = new Wrapper[0];
        for(Integer i = 0; i < 5; i++) {
            items.add(new Wrapper());
        }
    }
}

<apex:page controller="q192000">
    <apex:form id="form">
        <apex:pageBlock>
            <apex:pageBlockTable value="{!items}" var="item">
                <apex:column>
                    <apex:inputCheckbox value="{!item.checkbox1}">
                        <apex:actionSupport event="onchange" action="{!item.updateStatus}" reRender="form" />
                    </apex:inputCheckbox>
                </apex:column>
                <apex:column>
                    <apex:inputCheckbox value="{!item.checkbox2}" disabled="{!item.checkbox2disabled}" />
                </apex:column>
            </apex:pageBlockTable>
        </apex:pageBlock>
    </apex:form>
</apex:page>

Note that this page is kind of... well, slow. Visualforce wasn't really meant to do this sort of thing, so if you click really quickly, you might see some strange behavior. Nevertheless, this should cover the basics of what you're trying to accomplish.

Related Solutions

[SalesForce] How to draw a checkbox in headerValue attribute

As @MattLacey said, use the apex:facet inside of an apex:column.

Once you do that, you can either write the implementation of the checkAll / uncheckAll to be strictly client side with JavaScript or you can use built-in Visualforce for everything.

Client Side (JavaScript)

You could use jQuery or just plain old JavaScript to implement a checkAll / uncheckAll that is strictly client side.

The checkbox in that case would not need to be an apex:inputCheckbox. You could just use a plain old HTML checkbox.

<apex:column >
    <apex:facet name="header">
        <input type="checkbox" id="checkAllBox" onclick="toggleCheckAll(this)"/>
    </apex:facet>
    <apex:inputCheckbox value="{!wrappedItem.checked}"/>
</apex:column>

And the JS:

var $j = jQuery.noConflict();
function toggleCheckAll(checkAllBox) {
    $j('.checkableTable :checkbox').prop('checked', checkAllBox.checked);
}

Server Side (Pure Visualforce / No JavaScript)

If you want a pure Visualforce solution where the checkbox is an apex:inputCheckbox that when checked/unchecked invokes an action in the controller to check all of the wrapped items and redisplay them then you'd want something like this:

<apex:column >
    <apex:facet name="header">
        <apex:inputCheckbox value="{!checkAllValue}" reRender="myWrappers">
            <apex:actionSupport event="onchange" rerender="theBlock" action="{!processCheckChange}"/>
        </apex:inputCheckbox>
    </apex:facet>
    <apex:inputCheckbox value="{!wrappedItem.checked}"/>
</apex:column>

You'll have to write the processCheckChange method to set the value of the wrappedItems checked.

In my opinion, the JavaScript solution is usually preferable, since you don't want your users to have to experience the lag of a round trip to the server to check / uncheck all boxes.

In answer to question number 1 about the conditional rendering

You could either filter the list directly in the controller to remove the unchecked items or you could use the rendered attribute of apex:column. For example:

<apex:column rendered="{!w.checked}">
    <input type="checkbox" />
</apex:column>
<apex:column value="{!w.school.Name}" rendered="{!w.checked }" />
<apex:column value="{!w.school.OtherField}" rendered="{!w.checked}"/>

If you have to do that it would be better to use the native Visualforce (no JavaScript solution).

[SalesForce] Manage State for apex:inputCheckbox on Visualforce page when adding dynamic apex:pageBlockTable rows

Wow, I don't know how to feel about this. The answer is, Don't use apex:inputCheckbox, always use apex:inputField when binding to a value on a controller. Apex will do the work of knowing it's a boolean and making it a checkbox.

Ouch, that was a bunch of time wasted.

Maybe someone could add this to the apex:inputCheckbox documentation, right after it says this: "Use this component to get user input for a controller method that does not correspond to a field on a Salesforce object." - to say, "If you're binding a checkbox to a controller, use apex:inputfield" and it will be rendered as a checkbox.

Best Answer

Related Solutions

[SalesForce] How to draw a checkbox in headerValue attribute

[SalesForce] Manage State for apex:inputCheckbox on Visualforce page when adding dynamic apex:pageBlockTable rows

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