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Purpose

The Solution Model is a feature since Servoy version 4.1 which allows you to manipulate different kinds of objects on-the-fly through scripting. You can perform actions such as:

• Create objects and set their properties
• Clone objects
• Manipulate properties of existing objects
• Revert objects to its original design-time state
• Remove existing objects

Basic rules and functionality

With the Solution Model you can control different types of objects. Referring to these objects is done through so-called JS Objects and consist of constants, properties and/or functions.

The following list shows the objects which can be controlled by the Solution Model, its corresponding JS Object and from which JS Object it needs to be referenced from in order to use it:

When creating objects you need to make sure that the same object with the same name does not already exists. In this case you need to choose another name or remove the existing object.

By default, changes made by the Solution Model are not persistent and are only valid for the current session in which these changes are made. However, by a special setting (servoyDeveloper scripting access?) the changes are being stored back into the workspace.

Examples

This section shows (simple) examples of how different objects can be controlled with the Solution Model. Per object you will find how to:

• Create an object
• Retrieve an existing object
• Change a property of an object
• Remove an existing object

Calculations

To create a new calculation with name myCalculation on table customers of server example_data which returns 1:

var calculation = solutionModel.newCalculation('function myCalculation() { return 1; }', JSVariable.INTEGER, 'db:/example_data/customers');

To get the existing calculation myCalculation on table customers of server example_data:

var calculation = solutionModel.getCalculation('myCalculation', 'db:/example_data/customers');

To output whether or not this calculation is a stored one:

application.output('Stored calculation: ' + calculation.isStored();

To remove existing calculation myCalculation:

solutionModel.removeCalculation('myCalculation', 'db:/example_data/customers');

Styles

To create a new stylesheet with name myStyle with a default style class for forms:

var style = solutionModel.newStyle('myStyle' 'form { background-color: transparent; }';

To get existing stylesheet myStyle:

var style = solutionModel.getStyle('myStyle')

To add a default style class for fields:

style.text += 'field { background-color: blue; }';

To remove existing stylesheet myStyle:

solutionModel.removeStyle('myStyle');

Global variables

To create a new global variable with name myGlobalVariable of type TEXT:

var globalVariable = solutionModel.newGlobalVariable('myGlobalVariable', JSVariable.TEXT);

To get existing global variable myGlobalVariable:

var globalVariable = solutionModel.getGlobalVariable('myGlobalVariable');

To change its default value to abc:

myGlobalVariable.defaultValue = 'abc';

To remove existing global variable myGlobalVariable:

solutionModel.removeGlobalVariable('myGlobalVariable');

Global methods

To create a new global method with name myGlobalMethod:

var globalMethod = solutionModel.newGlobalMethod('function myGlobalMethod() { currentcontroller.newRecord(); }');

To get existing global method myGlobalMethod:

var globalMethod = solutionModel.getGlobalMethod('myGlobalMethod');

To make it appear in the menu:

globalMethod.showInMenu = true;

To remove existing global method myGlobalMethod:

solutionModel.removeGlobalMethod('myGlobalMethod');

Forms

Forms are most commonly used with the Solution Model and have some additional functions. The following basic functions are available for this type of objects:

• Create new forms
• Get existing forms
• Clone an existing form
• Remove an existing form
• Revert an existing form to its original design-time state

To create a new form with name myForm:

var form = solutionModel.newForm('myForm');

To get existing form myForm:

var form = solutionModel.getForm('myForm');

To disable its navigator:

form.navigator = SM_DEFAULTS.NONE;

To clone existing form myForm to cloned form myClonedForm:

var form = solutionModel.getForm('myForm');
var clonedForm = solutionModel.cloneForm('myClonedForm', form);

To remove existing form myForm:

var success = history.removeForm('myForm');
if (success) {
	solutionModel.removeForm('myForm');
}

To revert existing form myForm to its original design-time state:

var success = history.removeForm('myForm');
if (success) {
	solutionModel.removeForm('myForm');
}

Form variables

To create a new form variable with name myFormVariable:

var formVariable = form.newFormVariable('myFormVariable', JSField.TEXT_FIELD);

To get existing form variable myFormVariable:

var formVariable = form.getFormVariable('myFormVariable');

To change its default value to abc:

formVariable.defaultValue = 'abc';

To remove existing form variable myFormVariable:

form.removeFormVariable('myFormVariable');

Form methods

To create a new form method with name myFormMethod:

var formMethod = form.newFormMethod('function myFormMethod() {controller.newRecord(); }');

To get existing form method myFormMethod:

var formMethod = form.getFormMethod('myformMethod');

To make it appear in the menu:

globalMethod.showInMenu = true;

To remove existing form method myFormMethod:

form.removeFormMethod('myFormMethod');

Beans

To create a tree view with name myBean:

var bean = form.newBean('myBean', 'com.servoy.extensions.beans.dbtreeview.DBTreeView', 200, 200, 300, 300);

To get existing bean: myBean:

form.getBean('myBean');

To change its anchoring to top, left and bottom:

bean.anchors = SM_ANCHOR.NORTH | SM_ANCHOR.WEST | SM_ANCHOR.SOUTH;

To remove existing bean myBean:

form.removeBean('myBean');

Buttons

To create a new button with name myButton and text Text and attaching global method myGlobalMethod to it:

var globalMethod = solutionModel.getGlobalMethod('myGlobalMethod');
var button = form.newButton('Text', 0, 0, 80, 20, globalMethod);
button.name = 'myButton';

To get existing button myButton:

var button = solutionModel.getButton('myButton');

To change its height to 30"

button.height = 30;

To remove existing button myButton:

form.removeButton('myButton');

Components

If you want to change properties which are common to all elements, you can do this through components instead of having to retrieve each individual object separately.

To retrieve component with name myButton:

var component = form.getComponent('myButton');

To hide the element:

component.visible = true;

To retrieve all available components on the form:

var components = form.getComponents();

To change the width of all elements to 200:

for (var i = 0; i < components.length; i++) {
	components[i].width = 200;
}

Fields

To create a new text field with name myField with form variable myFormVariable as its dataprovider:

var formVariable = form.getFormVariable('myFormVariable');
var field = form.newField(formVariable, JSField.TEXT_FIELD, 0, 0, 100, 200);
field.name = 'myField';

To get existing field myField:

var field = form.getField('myField');

To change its display type to a text area:

field.displayType = JSField.TEXT_AREA; 

To remove existing field myField:

form.removeField('myField');

Labels

To create a new label with name myLabel with text Text:

var label = form.newLabel('Text', 0, 0, 100, 20);
label.name = 'myLabel';

To retrieve existing label myLabel

var label = form.getLabel('myLabel');

To change its horizontal alignment to center:

var label = form.getLabel('myLabel');

To change its horizontal alignment to center:
label.horizontalAlignment = SM_ALIGNMENT.CENTER;

To remove existing label _myLabel_:

form.removeLabel('myLabel');

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h5. Portals

To create a new portal with name _myPortal_ based on relation _myRelation_:

var relation = solutionModel.getRelation('myRelation');
var portal = form.newPortal('myPortal', relation, 0, 0, 500, 500);

To get existing portal _myPortal_:

var portal = form.getPortal('myPortal');

To make it resizable:

portal.resizable = true;

To remove existing portal _myPortal_:

form.removePortal('myPortal');

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h5. Tab panels

To create a new tab with name _myTabPanel_:

var tabPanel = form.newTabPanel('myTabPanel', 0, 0, 500, 500);

To get existing tab panel _myTabPanel_:

var tabPanel = form.getTabPanel('myTabPanel);

To add a new tab with name _myTab_ based on relation _myRelation_:

var relation = solutionModel.getRelation('myRelation');
var tab = tabPanel.newTab('myTab', 'Text', myRelatedForm, relation);

To remove existing tab panel _myTabPanel_:

form.removeTabPanel('myTabPanel');

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h4. Relations

To create a new relation with name _myRelation_ between tables _customers_ and _orders_:

var relation = solutionModel.newRelation('myRelation', 'db:/example_data/customers', 'db:/example_data/orders', JSRelation.INNER_JOIN);

To get existing relation _myRelation_:

var relation = solutionModel.getRelation('myRelation');

To create new a new relation item based on fields _id_ and _customer_id_:

relation.newRelationItem('id', '=', 'customer_id');

To remove existing relation _myRelation_:

solutionModel.removeRelation('myRelation');

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h4. Value lists

To create a new value list with name _myValueList_:

var valueList = solutionModel.newValueList('myValueList', JSValueList.CUSTOM_VALUES);

To get existing value list _myValueList_:

var valueList = solutionModel.getValueList('myValueList');

To set custom values for the value list:

valueList.customValues = '1\n2';

To remove existing value list _myValueList_:

solutionModel.removeValueList('myValueList');

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h4. Media

To create new media with name _myMedia_:

var media = solutionModel.newMedia('myMedia', plugins.http.getMediaData('http://www.servoy.com/images/logo_servoy.gif'));

To get existing media _myMedia_:

var media = solutionModel.getMedia('myMedia');

To change it content:

media.bytes = plugins.http.getMediaData('http://servoy.com/images/headerimages/open_source.jpg');

To remove existing media _myMedia_:

solutionModel.removeMedia('myMedia');