ListView Gadget
Contents
Overview
Listview Gadgets can be loaded into a Form Section. They provide a clickable list to select an option.
You build Apps in Lianja App Builder visually using the Page Builder.
If you have not yet down so please read Understanding the Lianja Architecture and also Understanding ART to better understand this article.
An App consists of pages. Pages are made up of Sections. Form sections are made up of FormItems. We call these collectively "UI Elements" or "Visual Elements".
Setting Attributes Declaratively
You adjust the appearance and behavior of each UI Element in the Attributes Tab of the App Inspector.
The attributes available consist of some common ones as well as some specific to the UI Element being inspected.
Getting and Setting Attributes Programmatically
The setAttribute(name, value) method can be used to set the value of an Attribute:
Lianja.get("pageid.sectionid.fieldid").setAttribute("caption","Formitem1")
Note: the shortened form setAttr(name,value) is also available.
The getAttribute(name) method can be used to get the value of an Attribute:
cTitle = Lianja.get("pageid.sectionid.fieldid").getAttribute("caption")
Note: the shortened form getAttr(name) is also available.
See Also
Checklistview Gadget Attributes
Demo Apps (included in the Lianja App Builder distribution):
- ListView App (example_listview)
Attributes
Details
Attribute | Description | Name | Type |
---|---|---|---|
Name | The name for this gadget (unique to the section) | id | Character |
Alias name | The alias name for this gadget | aliasid | Character |
Meta types | A comma separated list of metatype names | metatypes | Character |
Type | The type of control: Gadget (readonly) | type | Character |
Gadget type | The type of gadget: listview (readonly) | gadgetType | Character |
Margin | Margin size around the gadget | gadgetMargin | Int |
Fixed width | Fixed gadget width in pixels | gadgetFixedWidth | Int |
Fixed height | Fixed gadget height in pixels | gadgetFixedHeight | Int |
Inline | Render the gadget inline rather than it its own column (True | False) | gadgetInline | Boolean |
Stretch width | Auto stretch the width of the gadget into the width of the section (True | False) | gadgetStretchWidth | Boolean |
Geometry
Attribute | Description | Name | Type |
---|---|---|---|
Absolute | Enable or disable absolute positioning (True | False) | absolutePosition | Boolean |
Top | Top position in pixels | absolutePositionY | Int |
Left | Left position in pixels | absolutePositionX | Int |
Width | Width in pixels | absolutePositionWidth | Int |
Height | Height in pixels | absolutePositionHeight | Int |
CSS style | CSS style (separate attributes with ; or use app:/filename.css) | cssStyle | Character |
Caption
Attribute | Description | Name | Type |
---|---|---|---|
Caption | The caption for the gadget | caption | Character |
Background color | The background color for the caption | backColor | Character |
Foreground color | The foreground color for the caption | foreColor | Character |
Font | The font for the caption | captionFont | Character |
Icon | The image for the caption (png | jpg | gif). Use app:/imagename.ext for app specific images. |
captionIcon | Character |
Border width | The caption border width | captionBorderWidth | Int |
Border color | The caption border color | captionBorderColor | Character |
Transparency | Specify a transparency percentage from 0 to 100 | transparency | Int |
Gradient colors | Render the caption color as a gradient (True | False) | captionGradient | Boolean |
Gradient type | Specify the gradient type | captionGradientType | Int |
Gradient start color | Gradient start color | captionFromColor | Character |
Gradient end color | Gradient end color | captionToColor | Character |
Data
Attribute | Description | Name | Type |
---|---|---|---|
Data source | The table and column that this gadget is bound to. | controlSource | Character |
List items | A list of items, e.g. Static list of choices: Apples,Oranges,Bananas Static list of choices with (preceding) image: Apples@image,Oranges@image,Bananas@image Dynamic list of choices from a table: @tablename,expression Dynamic list of choices from a table (SQL SELECT): select expression from tablename |
choiceList | Character |
Editable | Data is editable (True | False) | editable | Boolean |
CSS style | CSS style for the gadget (separate attributes with ; or use app:/filename.css) | gadgetCssStyle | Character |
Header labels | A comma separated list of header labels | headerLabels | Character |
Column widths | A comma separated list of column widths | columnWidths | Character |
Column alignments | A comma separated list of column alignments, e.g.left,right,center | columnAlignments | Character |
Background color | The background color for the gadget | gadgetBackColor | Character |
Foreground color | The foreground color for the gadget | gadgetForeColor | Character |
Other Options
Attribute | Description | Name | Type |
---|---|---|---|
Hide header | Hide gadget header at runtime (True | False) | gadgetHideHeader | Boolean |
Custom Delegates
Attribute | Description | Name | Type |
---|---|---|---|
Init | The delegate for the Init event | initAction | Character |
Load | The delegate for the Load event | loadAction | Character |
Ready | The delegate for the Ready event | readyAction | Character |
Click | The delegate for the item Clicked event | ClickAction | Character |
Permissions and Roles
Attribute | Description | Name | Type |
---|---|---|---|
Read roles | A comma separated list of roles that can read (and view) the data. | permRead | Character |
Update roles | A comma separated list of roles that can perform update operations on the data. | permUpdate | Character |
UI Presentation Rules
Attribute | Description | Name | Type |
---|---|---|---|
Desktop | Include this gadget in a Desktop client (True | False). | desktopUI | Boolean |
Web | Include this gadget in a Web client (True | False). | webUI | Boolean |
Tablet | Include this gadget in a Tablet client (True | False). | tabletUI | Boolean |
Phone | Include this gadget in a Phone client (True | False). | mobileUI | Boolean |
UI States | UI states that affect this gadget. Specify multiple states as a comma separated list. | state | Character |
Initial UI state | The initial UI state for this gadget. | uiStateInit | Character |
Readonly when | Gadget is readonly at runtime if specified expression evaluates to true. | readonlyWhen | Character |
Visible when | Gadget is visible at runtime if specified expression evaluates to true. | visibleWhen | Character |
Hidden at runtime | Hide this formitem at runtime (True | False). | hiddenAtRuntime | Boolean |
Display orientation | Display depending on mobile device orientation for Tablets and Phones. (Always | Portrait | Landscape) | displayOrientation | Character |
Apply rules on change | Apply UI presentation rules (Visible when and Readonly when) when data is changed interactively or when navigating records (True | False). | applyRulesOnChange | Boolean |