Что такое код swfbutton >setaction


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SWFButton->setAction()

SWFButton->setAction() � Sets the action

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Sets the action to be performed when the button is clicked.

This is a shortcut for SWFButton->addAction() called with the SWFBUTTON_MOUSEUP flag.

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SWFbutton->setAction — ������������� �����.

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void swfbutton->setaction (ressource action)

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swfbutton->setaction() ������������� �����, ����������� ��� ������ ������. ��������� addAction(shape, SWFBUTTON_MOUSEUP).

��. ����� swfbutton->addshape() � SWFAction() .

SWFButton->setAction

SWFButton->setAction � Sets the action

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Sets the action to be performed when the button is clicked.

This is a shortcut for SWFButton->addAction called with the SWFBUTTON_MOUSEUP flag.

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SWFbutton->setAction — ������������� �����.

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void swfbutton->setaction (ressource action)

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swfbutton->setaction() ������������� �����, ����������� ��� ������ ������. ��������� addAction(shape, SWFBUTTON_MOUSEUP).

��. ����� swfbutton->addshape() � SWFAction() .

amp-bind

Adds custom interactivity with data binding and expressions.

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Required Script
Examples
  • Introductory code example with annotations
  • Linked image carousels example with annotations
  • E-commerce product page example with annotations
Tutorials Create interactive AMP pages

Overview

The amp-bind component allows you to add custom stateful interactivity to your AMP pages via data binding and JS-like expressions.

A simple example

In the following example, tapping the button changes the

element’s text from «Hello World» to «Hello amp-bind».

For performance and to avoid the risk of unexpected content jumping, amp-bind does not evaluate expressions on page load. This means that the visual elements should be given a default state and not rely amp-bind for initial render.

How does it work?

amp-bind has three main components:

  1. State: A document-scope, mutable JSON state. In the example above, the state is empty before tapping the button. After tapping the button, the state is .
  2. Expressions: These are JavaScript-like expressions that can reference the state. The example above has a single expression, ‘Hello ‘ + foo , which concatenates the string literal ‘Hello ‘ and the state variable foo . There is a limit of 100 operands what can be used in an expression.
  3. Bindings: These are special attributes of the form [property] that link an element’s property to an expression. The example above has a single binding, [text] , which updates the

element’s text every time the expression’s value changes.

amp-bind takes special care to ensure speed, security and performance on AMP pages.

A slightly more complex example

When the button is pressed:

State is updated with currentAnimal defined as ‘cat’ .


Expressions that depend on currentAnimal are evaluated:

  • ‘This is a ‘ + currentAnimal + ‘.’ => ‘This is a cat.’
  • myAnimals[currentAnimal].style => ‘redBackground’
  • myAnimals[currentAnimal].imageUrl => /img/cat.jpg

Bindings that depend on the changed expressions are updated:

element’s text will read «This is a cat.»
The second

element’s class attribute will be «redBackground».

  • The amp-img element will show the image of a cat.
  • Try out the live demo for this example with code annotations!

    Details

    State

    Each AMP document that uses amp-bind has document-scope mutable JSON data, or state.

    Initializing state with amp-state

    amp-bind ‘s state can be initialized with the amp-state component:

    Expressions can reference state variables via dot syntax. In this example, myState.foo will evaluate to «bar» .

    Refreshing state

    The refresh action is supported by this component and can be used to refresh the state’s contents.

    Updating state with AMP.setState()

    The AMP.setState() action merges an object literal into the state. For example, when the below button is pressed, AMP.setState() will deep-merge the object literal with the state.

    In general, nested objects will be merged up to a maximum depth of 10. All variables, including those introduced by amp-state , can be overidden.

    When triggered by certain events, AMP.setState() also can access event-related data on the event property.

    Modifying history with AMP.pushState()

    The AMP.pushState() action is similar to AMP.setState() except it also pushes a new entry onto the browser history stack. Popping this history entry (e.g. by navigating back) restores the previous value of variables set by AMP.pushState() .

    • Tapping the button will set variable foo to 123 and push a new history entry.
    • Navigating back will restore foo to its previous value, «bar» (equivalent to calling AMP.setState() .

    Expressions

    Expressions are similar to JavaScript with some important differences.

    Differences from JavaScript

    • Expressions may only access the containing document’s state.
    • Expressions do not have access to window or document . global references the top-level state.
    • Only white-listed functions and operators may be used. Custom functions, classes and loops are disallowed. Arrow functions are allowed as function parameters e.g. [1, 2, 3].map(x => x + 1) .
    • Undefined variables and array-index-out-of-bounds return null instead of undefined or throwing errors.
    • A single expression is currently capped at 50 operands for performance. Please contact us if this is insufficient for your use case.

    The full expression grammar and implementation can be found in bind-expr-impl.jison and bind-expression.js.

    Examples

    The following are all valid expressions:

    White-listed functions

    Object type Function(s) Example
    Array 1 concat
    filter
    includes
    indexOf
    join
    lastIndexOf
    map
    reduce
    slice
    some
    sort (not-in-place)
    splice (not-in-place)
    Number toExponential
    toFixed
    toPrecision
    toString
    String charAt
    charCodeAt
    concat
    indexOf
    lastIndexOf
    replace
    slice
    split
    substr
    substring
    toLowerCase
    toUpperCase
    Math 2 abs
    ceil
    floor
    max
    min
    pow
    random
    round
    sign
    Object 2 keys
    values
    Global 2 encodeURI
    encodeURIComponent

    1 Single-parameter arrow functions can’t have parentheses, e.g. use x => x + 1 instead of (x) => x + 1 . Also, sort() and splice() return modified copies instead of operating in-place.
    2 Static functions are not namespaced, e.g. use abs(-1) instead of Math.abs(-1) .

    Defining macros with amp-bind-macro

    amp-bind expression fragments can be reused by defining an amp-bind-macro . The amp-bind-macro element allows you to define an expression that takes zero or more arguments and references the current state. A macro can be invoked like a function by referencing its id attribute value from anywhere in your doc.

    A macro can also call other macros defined before itself. A macro cannot call itself recursively.

    Bindings

    A binding is a special attribute of the form [property] that links an element’s property to an expression. An alternative, XML-compatible syntax can also be used in the form of data-amp-bind-property .

    When the state changes, expressions are re-evaluated and the bound elements’ properties are updated with the new expression results.

    amp-bind supports data bindings on five types of element state:

    Type Attribute(s) Details
    Node.textContent [text] Supported on most text elements.
    CSS classes [class] Expression result must be a space-delimited string.
    The hidden attribute [hidden] Should be a boolean expression.
    Size of AMP elements [width]
    [height]
    Changes the width and/or height of the AMP element.
    Accessibility states and properties [aria-hidden]
    [aria-label]
    etc.
    Used for dynamically updating information available to assistive technologies like screen readers.
    Element-specific attributes Various

    Notes on bindings:

    Element-specific attributes


    Only binding to the following components and attributes are allowed:

    Component Attribute(s) Behavior
    [data-account]
    [data-embed]
    [data-player]
    [data-player-id]
    [data-playlist-id]
    [data-video-id]
    Changes the displayed Brightcove video.
    [slide] Changes the currently displayed slide index. See an example.
    [min]
    [max]
    Sets the earliest selectable date
    Sets the latest selectable date
    [src]
    [title]
    Displays the document at the updated URL.
    Changes the document’s title.
    [src] Changes the iframe’s source URL.
    [alt]
    [attribution]
    [src]
    [srcset]
    Recommend binding to [srcset] instead of [src] to support responsive images.
    See corresponding amp-img attributes.
    [open] Toggles display of the lightbox. Tip: Use on=»lightboxClose: AMP.setState(. )» to update variables when the lightbox is closed.
    [src] If expression is a string, fetches and renders JSON from the string URL. If expression is an object or array, renders the expression data.
    [selected] *
    [disabled]
    Changes the currently selected children element(s)
    identified by their option attribute values. Supports a comma-separated list of values for multiple selection. See an example.
    [src] Fetches JSON from the new URL and merges it into the existing state. Note the following update will ignore elements to prevent cycles.
    [data-tweetid] Changes the displayed Tweet.
    [alt]
    [attribution]
    [controls]
    [loop]
    [poster]
    [preload]
    [src]
    See corresponding amp-video attributes.
    [data-videoid] Changes the displayed YouTube video.
    [href] Changes the link.
    [disabled]
    [type]
    [value]
    See corresponding button attributes.
    [open] See corresponding details attributes.
    [disabled] Enables or disables the fieldset.
    [xlink:href] See corresponding image attributes.
    [accept]
    [accessKey]
    [autocomplete]
    [checked]
    [disabled]
    [height]
    [inputmode]
    [max]
    [maxlength]
    [min]
    [minlength]
    [multiple]
    [pattern]
    [placeholder]
    [readonly]
    [required]
    [selectiondirection]
    [size]
    [spellcheck]
    [step]
    [type]
    [value]
    [width]
    See corresponding input attributes.
    [disabled]
    [label]
    [selected]
    [value]
    See corresponding option attributes.
    [disabled]
    [label]
    See corresponding optgroup attributes
    [data-expand] Changes the expansion of a section in an amp-accordion.
    [autofocus]
    [disabled]
    [multiple]
    [required]
    [size]
    See corresponding select attributes.
    [src]
    [type]
    See corresponding source attributes.
    [label]
    [src]
    [srclang]
    See corresponding track attributes.
    [autocomplete]
    [autofocus]
    [cols]
    [disabled]
    [defaultText]
    [maxlength]
    [minlength]
    [placeholder]
    [readonly]
    [required]
    [rows]
    [selectiondirection]
    [selectionend]
    [selectionstart]
    [spellcheck]
    [wrap]
    Use [defaultText] to update initial text, and [text] to update current text.
    See corresponding textarea attributes.

    * Denotes bindable attributes that don’t have a non-bindable counterpart.

    Debugging

    Test in development mode (with the URL fragment #development=1 ) to highlight warnings and errors during development and to access special debugging functions.

    Warnings

    In development mode, amp-bind will issue a warning when the default value of a bound attribute doesn’t match its corresponding expression’s initial result. This can help prevent unintended mutations caused by changes in other state variables. For example:

    In development mode, amp-bind will also issue a warning when dereferencing undefined variables or properties. This can also help prevent unintended mutations due to null expression results. For example:

    Errors

    There are several types of runtime errors that may be encountered when working with amp-bind .

    Type Message Suggestion
    Invalid binding Binding to [foo] on

    is not allowed.

    Use only white-listed bindings.
    Syntax error Expression compilation error in. Verify the expression for typos.
    Non-whitelisted functions alert is not a supported function. Use only white-listed functions.
    Sanitized result «javascript:alert(1)» is not a valid result for [href]. Avoid banned URL protocols or expressions that would fail the AMP Validator.
    CSP violation Refused to create a worker from ‘blob. ‘ because it violates the following Content Security Policy directive. Add default-src blob: to your origin’s Content Security Policy. amp-bind delegates expensive work to a dedicated Web Worker to ensure good performance.

    Debugging State

    Use AMP.printState() to print the current state to the console.

    Appendix

    specification

    An amp-state element may contain either a child

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    SWFbutton->setAction — Sets the action

    Description vo >swfbutton->setaction ( resource action )

    This function is EXPERIMENTAL . The behaviour of this function, the name of this function, and anything else documented about this function may change without notice in a future release of PHP. Use this function at your own risk.

    swfbutton->setaction() sets the action to be performed when the button is clicked. Alias for addAction(shape, SWFBUTTON_MOUSEUP). action is a swfaction() .

    See also swfbutton->addshape() and swfaction() .

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    iimPlay(macro1);

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    ��� ����� ��� swfbutton >setaction

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    SWFbutton->setAction — Sets the action

    Description vo >swfbutton->setaction ( resource action )

    Warning

    Эта функция является ЭКСПЕ� ИМЕНТАЛЬНОЙ . Поведение этой функции, ее имя и относящаяся к ней документация могут измениться в последующих версиях PHP без уведомления. Используйте эту функцию на свой страх и риск.

    swfbutton->setaction() sets the action to be performed when the button is clicked. Alias for addAction(shape, SWFBUTTON_MOUSEUP). action is a swfaction() .

    See also swfbutton->addshape() and swfaction() .

    ��� ����� ��� swfbutton >setaction

    (no version information, might be only in CVS)

    SWFbutton->setAction — Sets the action

    Description vo >swfbutton->setaction ( resource action )

    Внимание

    This function is EXPERIMENTAL . The behaviour of this function, the name of this function, and anything else documented about this function may change without notice in a future release of PHP. Use this function at your own risk.

    swfbutton->setaction() sets the action to be performed when the button is clicked. Alias for addAction(shape, SWFBUTTON_MOUSEUP). action is a swfaction() .

    See also swfbutton->addshape() and swfaction() .

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