QR Code
The QR Code control is used to direct users to a website by using a QR scanner. Typically, QR scanners are available for download on camera-enabled smart phones for free. It is an easy and convenient way to get users to a particular website, since all they have to do is line up the scanner to the QR code, and they are taken to the website that has been configured on the QR Code control.
Appearance
| Label placement: | The label position. {Top | Left} |
LabelPlacement |
| Label width: | The width of the label in px, % or em.\r\nFor example\: 50px, 20%, 0.4em. If no unit is specified, px is assumed. | String |
| Width: | Width of the QRCode control | String |
| Height: | Height of the QRCode control | String |
| Background image URL: | The background image URL for the QR control. | String |
Behavior
| Error correction level: | There are 4 error correction levels used for QR codes, with each one adding different amounts of backup data depending on how much damage the QR code is expected to suffer in its intended environment, and hence how much error correction may be required\:\r\nLevel L up to 7% damage\r\nLevel M up to 15% damage\r\nLevel Q up to 25% damage\r\nLevel H up to 30% damage {Level L - up to 7% damage | Level M - up to 15% damage | Level Q - up to 25% damage | Level H - up to 30% damage} |
QRErrorCorrectionLevel |
Formula
| QR code formula: | The formula or expression to calculate the QR code value. | String |
| Events | |||||||||
| On Load: |
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| On Change: |
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Extends:
Methods:
Inherited
addClass(name, [replaced])
Add/replace CSS class(es) for this control
| Name | Type | Default | Description |
| name | {string} | CSS class name(s) to add to the control. Separate class names by a space if more than one class. | |
| replaced | {string} | CSS class name(s) to be replaced by the first argument. Separate class names by a space if more than one class. |
Example
| Button.addClass("green"); |
getBackgroundImageURL()
Returns:
{string}
Get configured backgroundImageURL for QRCode control
Inherited
getData()
Returns:
{Object}
Retrieve bound data associated this view/control. Only works for views/controls with bound data.
Example
| var dec1 = MyDecimal.getData(); |
getErrorCorrectionLevel()
Returns:
{string}
Get configured errorCorrectionLevel for QRCode control
getLabel()
Returns:
{string}
Get label associated with QRCode control
getLabelPlacement()
Returns:
{string}
Get label placement for control. NOTE: This always returns the label placement as set, to avoid ambiguity always set the label placement using "T"|"L"
getLabelWidth()
Returns:
{string}
Get label width of QRCode control (e.g. 50px, 20%, 2em - omitting the unit assumes px)
getQRCode()
Returns:
{string}
Get QRCode for QRCode control
getType()
Returns:
{string}
Get descriptive string representing the type of control
getWidth()
Returns:
{string}
Get configured width for QRCode control (including unit)
Inherited
hide(collapseFlag)
Hide this view/control
| Name | Type | Default | Description |
| collapseFlag | {boolean} | Set to true to collapse the view (equivalent to a view setting of "NONE") |
Example
| MyView.hide(); |
Inherited
isBound()
Returns:
{boolean}
Indicates bound status of control.
Inherited
isEnabled()
Returns:
{boolean}
Checks if the view is enabled or not
Example
| var enabled = MyView.isEnabled(); |
isLabelVisible()
Returns:
{boolean}
Get label visibility for QRCode control
Inherited
isValid()
Returns:
{boolean}
Returns the valid status as last set by the setValid() method.
Example
| var valid = MyView.isValid(); |
Inherited
isVisible()
Returns:
{boolean}
Checks whether or not view is visible
Example
| var visible = MyView.isVisible(); |
Inherited
propagateUpValueChange(event)
Returns:
{boolean}
Propagates value change of control up through parent views
| Name | Type | Default | Description |
| event | {Event} | Value change event (usually an onchange event) |
Example
| MyView.propagateUp(event); |
Inherited
recalculate()
Only for formula-enabled views!
Explicitly triggers the re-evaluation of the formula
for this view (if a formula has been specified). If the view is not formula-enabled,
Explicitly triggers the re-evaluation of the formula
for this view (if a formula has been specified). If the view is not formula-enabled,
recalculate() does nothing.Example
| Text1.recalculate();
//If the formula for Text1 is: new Date().toString(), Text1 is updated to the current date/time |
setBackgroundImageURL(height)
Set backgroundImageURL of QRCode control
| Name | Type | Default | Description |
| height | {string} | backgroundImageURL |
Inherited
setData(value)
Set/update bound data associated this view/control. Only works for views/controls with bound data.
Note: Should only be used with simple type bindings, or complex type bindings with simple type properties.
Should not be used with bindings that have properties that are lists or compext types. For complex types, set bindings using
the
Note: Should only be used with simple type bindings, or complex type bindings with simple type properties.
Should not be used with bindings that have properties that are lists or compext types. For complex types, set bindings using
the
binding.set pattern detailed in the Knowlege Center section Binding Data and Configuration Options| Name | Type | Default | Description |
| value | {Object} | Value of bound data. The type of this parameter must match the type of the bound data. |
Example
| MyView.setData("TEST"); //Updates bound data to the string 'TEST' |
Inherited
setEnabled(enabled, required)
Enable/disable this view/control
| Name | Type | Default | Description |
| enabled | {boolean} | Enabled/read-only flag (true to enable view, false to disable/make read-only) | |
| required | {boolean} | Enable/disable required field flag for control |
Example
| MyView.setEnabled(false); //Make MyView read-only |
setErrorCorrectionLevel(level)
Set errorCorrectionLevel of QRCode control
| Name | Type | Default | Description |
| level | {string} | "L"=Level L | "M"="Level M | "Q"=Level Q | "H"=Level H |
setHeight(height)
Set height of QRCode control (e.g. 50px, 20%, 2em - omitting the unit assumes px)
| Name | Type | Default | Description |
| height | {string} | the height of the control |
setLabel(label)
Set label for QRCode control
| Name | Type | Default | Description |
| label | {string} | the label of the control |
setLabelPlacement(placement)
Set label placement for control. NOTE: to avoid ambiguity always set the label placement using "T"|"L"
| Name | Type | Default | Description |
| placement | {string} | "T"|"TOP"=Top | "L"|"LEFT"=Left |
setLabelVisible(flag)
Set label visibility for QRCode control
| Name | Type | Default | Description |
| flag | {boolean} | the visibility of the label |
setLabelWidth(labelWidth)
Set label width of QRCode control (e.g. 50px, 20%, 2em - omitting the unit assumes px)
| Name | Type | Default | Description |
| labelWidth | {string} | Control's label width |
setQRCode(QRCode)
Set QRCode for QRCode control
| Name | Type | Default | Description |
| QRCode | {string} | the QRCode text |
Inherited
setValid(valid, errorText)
Flag this view/control as valid or invalid
| Name | Type | Default | Description |
| valid | {boolean} | Valid/invalid flag (true to set view valid, false to make it invalid - which typically shows the view with "invalid" styling and indicator) | |
| errorText | {string} | Validation error text to show on the invalid-styled view |
Example
| MyView.setValid(false, "Please fix your data entry"); //Make MyView invalid |
Inherited
setVisible(visible, collapse)
Show/hide this view/control
| Name | Type | Default | Description |
| visible | {boolean} | Visibility flag (true to show view, false to hide) | |
| collapse | {boolean} | Set to true to collapse the control space when visible is set to false. |
Examples
| MyView.setVisible(false, false); //Equivalent to MyView.hide() |
| MyView.setVisible(false, true); // Sets visibility to "None" |
setWidth(width)
Set width of QRCode control (e.g. 50px, 20%, 2em - omitting the unit assumes px)
| Name | Type | Default | Description |
| width | {string} | the width of the control |
Inherited
show()
Show this view/control
Example
| MyView.show(); |
Inherited
triggerFormulaUpdates([phase])
Broadcasts the expression trigger for the specified view
| Name | Type | Default | Description |
| phase | {int} | bpmext.ui.PHASE_NORMAL | The phase we are currently in |
Example
| MyView.triggerFormulaUpdates(); |