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1 line
2.0 KiB
JavaScript
1 line
2.0 KiB
JavaScript
fabric.Canvas.prototype.initialize=function(t){return function(...i){return t.call(this,...i),this._historyInit(),this}}(fabric.Canvas.prototype.initialize),fabric.Canvas.prototype.dispose=function(t){return function(...i){return t.call(this,...i),this._historyDispose(),this}}(fabric.Canvas.prototype.dispose),fabric.Canvas.prototype._historyNext=function(){return JSON.stringify(this.toDatalessJSON(this.extraProps))},fabric.Canvas.prototype._historyEvents=function(){return{"object:added":this._historySaveAction,"object:removed":this._historySaveAction,"object:modified":this._historySaveAction,"object:skewing":this._historySaveAction}},fabric.Canvas.prototype._historyInit=function(){this.historyUndo=[],this.historyRedo=[],this.extraProps=["selectable"],this.historyNextState=this._historyNext(),this.on(this._historyEvents())},fabric.Canvas.prototype._historyDispose=function(){this.off(this._historyEvents())},fabric.Canvas.prototype._historySaveAction=function(){if(this.historyProcessing)return;const t=this.historyNextState;this.historyUndo.push(t),this.historyNextState=this._historyNext(),this.fire("history:append",{json:t})},fabric.Canvas.prototype.undo=function(t){this.historyProcessing=!0;const i=this.historyUndo.pop();i?(this.historyRedo.push(this._historyNext()),this.historyNextState=i,this._loadHistory(i,"history:undo",t)):this.historyProcessing=!1},fabric.Canvas.prototype.redo=function(t){this.historyProcessing=!0;const i=this.historyRedo.pop();i?(this.historyUndo.push(this._historyNext()),this.historyNextState=i,this._loadHistory(i,"history:redo",t)):this.historyProcessing=!1},fabric.Canvas.prototype._loadHistory=function(t,i,s){var o=this;this.loadFromJSON(t,function(){o.renderAll(),o.fire(i),o.historyProcessing=!1,s&&"function"==typeof s&&s()})},fabric.Canvas.prototype.clearHistory=function(){this.historyUndo=[],this.historyRedo=[],this.fire("history:clear")},fabric.Canvas.prototype.offHistory=function(){this.historyProcessing=!0},fabric.Canvas.prototype.onHistory=function(){this.historyProcessing=!1,this._historySaveAction()}; |