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/*
* Adds undo and redo functionality to the Fusion Page Builder
*/
( function( $ ) {
var fusionHistoryManager = {},
fusionCommands = new Array( '[]' ),
fusionCommandsStates = new Array( '[]' ), // History states
maxSteps = 25, // Maximum steps allowed/saved
currStep = 0; // Current Index of step
// Is tracking on or off?
window.tracking = 'on';
// History state title
window.fusionHistoryState = '';
window.fusionHistoryManager = fusionHistoryManager;
/**
* Get editor data and add to array
* @param NULL
* @return NULL
*/
fusionHistoryManager.captureEditor = function( ) {
var allElements;
if ( fusionHistoryManager.isTrackingOn() ) {
if ( currStep == maxSteps ) { // If reached limit
fusionCommands.shift(); // Remove first index
} else {
currStep += 1; // Else increment index
}
if ( currStep > 1 ) {
$( '.fusion-builder-history-list li' ).removeClass( 'fusion-history-active-state' );
$( '.fusion-builder-history-list' ).prepend( '<li data-state-id="' + currStep + '" class="history-state-' + currStep + ' fusion-history-active-state"><span class="dashicons dashicons-arrow-right-alt2"></span>' + fusionHistoryState + '</li>' );
}
// Get content
allElements = fusionBuilderGetContent( 'content', true );
// Add editor data to Array
fusionCommands[currStep] = allElements;
// Add history state
fusionCommandsStates[currStep] = fusionHistoryState;
// Update buttons
fusionHistoryManager.updateButtons();
fusionHistoryState = '';
}
};
/**
* Set tracking flag ON.
* @param NULL
* @return NULL
*/
fusionHistoryManager.turnOnTracking = function( ) {
window.tracking = 'on';
};
/**
* Set tracking flag OFF.
* @param NULL
* @return NULL
*/
fusionHistoryManager.turnOffTracking = function( ) {
window.tracking = 'off';
};
/**
* Get editor elements of current index for UNDO. Remove all elements currenlty visible in eidor and then reset models
* @param NULL
* @return NULL
*/
fusionHistoryManager.doUndo = function( event ) {
var undoData;
if ( event ) {
event.preventDefault();
}
// Turn off tracking first, so these actions are not captured
if ( fusionHistoryManager.hasUndo() ) { // If no data or end of stack and nothing to undo
fusionHistoryManager.turnOffTracking();
currStep -= 1;
// Data to undo
undoData = fusionCommands[ currStep ];
if ( '[]' !== undoData ) { // If not empty state
// Remove all current editor elements first
FusionPageBuilderApp.clearBuilderLayout();
FusionPageBuilderApp.$el.find( '.fusion_builder_container' ).remove();
// Reset models with new elements
FusionPageBuilderApp.createBuilderLayout( undoData );
$( '.fusion-builder-history-list li' ).removeClass( 'fusion-history-active-state' );
$( '.fusion-builder-history-list' ).find( '.history-state-' + currStep ).addClass( 'fusion-history-active-state' );
}
// Update buttons
fusionHistoryManager.updateButtons();
}
};
/**
* Get editor elements of current index for REDO. Remove all elements currenlty visible in eidor and then reset models
* @param NULL
* @return NULL
*/
fusionHistoryManager.doRedo = function( event ) {
var redoData;
if ( event ) {
event.preventDefault();
}
if ( fusionHistoryManager.hasRedo() ) { // If not at end and nothing to redo
// Turn off tracking, so these actions are not tracked
fusionHistoryManager.turnOffTracking();
// Move index
currStep += 1;
// Get data to redo
redoData = fusionCommands[ currStep ];
// Remove all current editor elements first
FusionPageBuilderApp.clearBuilderLayout();
FusionPageBuilderApp.$el.find( '.fusion_builder_container' ).remove();
// Reset models with new elements
FusionPageBuilderApp.createBuilderLayout( redoData );
// Update buttons
fusionHistoryManager.updateButtons();
$( '.fusion-builder-history-list li' ).removeClass( 'fusion-history-active-state' );
$( '.fusion-builder-history-list' ).find( '.history-state-' + currStep ).addClass( 'fusion-history-active-state' );
}
};
/**
* Save history state
* @param step
* @return NULL
*/
fusionHistoryManager.historyStep = function( step, event ) {
var stepData;
if ( event ) {
event.preventDefault();
}
// Get data
stepData = fusionCommands[step];
// Remove all current editor elements first
FusionPageBuilderApp.clearBuilderLayout();
FusionPageBuilderApp.$el.find( '.fusion_builder_container' ).remove();
// Reset models with new elements
FusionPageBuilderApp.createBuilderLayout( stepData );
currStep = step;
// Update buttons
fusionHistoryManager.updateButtons();
$( '.fusion-builder-history-list li' ).removeClass( 'fusion-history-active-state' );
$( '.fusion-builder-history-list' ).find( '.history-state-' + currStep ).addClass( 'fusion-history-active-state' );
};
/**
* Check whether tracking is on or off
* @param NULL
* @return NULL
*/
fusionHistoryManager.isTrackingOn = function( ) {
return 'on' === window.tracking;
};
/**
* Log current data
* @param NULL
* @return NULL
*/
fusionHistoryManager.logStacks = function() {
console.log( JSON.parse( fusionCommands ) );
};
/**
* Clear all commands and reset manager
* @param NULL
* @return NULL
*/
fusionHistoryManager.clearEditor = function( state ) {
var allElements;
fusionCommands = new Array( '[]' );
fusionCommandsStates = new Array( '[]' );
currStep = 1;
fusionHistoryState = '';
if ( 'blank' === state ) {
fusionCommands[ currStep ] = '';
} else {
allElements = fusionBuilderGetContent( 'content', true );
fusionCommands[ currStep ] = allElements;
}
fusionHistoryManager.updateButtons();
$( '.fusion-builder-history-list' ).html( '<li data-state-id="1" class="history-state-1 fusion-history-active-state"><span class="dashicons dashicons-arrow-right-alt2"></span>' + fusionBuilderText.empty + '</li>' );
};
/**
* Check if undo commands exist
* @param NULL
* @return NULL
*/
fusionHistoryManager.hasUndo = function() {
return 1 !== currStep;
};
/**
* Check if redo commands exist
* @param NULL
* @return NULL
*/
fusionHistoryManager.hasRedo = function() {
return currStep < ( fusionCommands.length - 1 );
};
/**
* Get existing commands
* @param NULL
* @return {string} actions
*/
fusionHistoryManager.getCommands = function() {
return fusionCommands;
};
/**
* Update buttons colors accordingly
* @param NULL
* @return NULL
*/
fusionHistoryManager.updateButtons = function() {
// Undo button
$( '.fusion-builder-layout-buttons-undo' ).css( 'background', fusionHistoryManager.hasUndo() ? '#222222' : '' );
// Redo button
$( '.fusion-builder-layout-buttons-redo' ).css( 'background', fusionHistoryManager.hasRedo() ? '#222222' : '' );
// History states button
$( '.fusion-builder-layout-buttons-history' ).css( 'background', fusionHistoryManager.hasUndo() ? '#222222' : '' );
};
})( jQuery );