fabric/dist/src/shapes/IText/ITextKeyBehavior.min.mjs

Object model for HTML5 canvas, and SVG-to-canvas parser. Backed by jsdom and node-canvas.

import{config as e}from"../../config.min.mjs";import{getEnv as t,getFabricDocument as n}from"../../env/index.min.mjs";import{CHANGED as r,LEFT as i,RIGHT as a}from"../../constants.min.mjs";import{getDocumentFromElement as o}from"../../util/dom_misc.min.mjs";import{capValue as s}from"../../util/misc/capValue.min.mjs";import{ITextBehavior as c}from"./ITextBehavior.min.mjs";var l=class extends c{initHiddenTextarea(){let e=this.canvas&&o(this.canvas.getElement())||n(),t=e.createElement(`textarea`);Object.entries({autocapitalize:`off`,autocorrect:`off`,autocomplete:`off`,spellcheck:`false`,"data-fabric":`textarea`,wrap:`off`,name:`fabricTextarea`}).map(([e,n])=>t.setAttribute(e,n));let{top:r,left:i,fontSize:a}=this._calcTextareaPosition();t.style.cssText=`position: absolute; top: ${r}; left: ${i}; z-index: -999; opacity: 0; width: 1px; height: 1px; font-size: 1px; padding-top: ${a};`,(this.hiddenTextareaContainer||e.body).appendChild(t),Object.entries({blur:`blur`,keydown:`onKeyDown`,keyup:`onKeyUp`,input:`onInput`,copy:`copy`,cut:`copy`,paste:`paste`,compositionstart:`onCompositionStart`,compositionupdate:`onCompositionUpdate`,compositionend:`onCompositionEnd`}).map(([e,n])=>t.addEventListener(e,this[n].bind(this))),this.hiddenTextarea=t}blur(){this.abortCursorAnimation()}onKeyDown(e){if(!this.isEditing)return;let t=this.direction===`rtl`?this.keysMapRtl:this.keysMap;if(e.keyCode in t)this[t[e.keyCode]](e);else{if(!(e.keyCode in this.ctrlKeysMapDown)||!e.ctrlKey&&!e.metaKey)return;this[this.ctrlKeysMapDown[e.keyCode]](e)}e.stopImmediatePropagation(),e.preventDefault(),e.keyCode>=33&&e.keyCode<=40?(this.inCompositionMode=!1,this.clearContextTop(),this.renderCursorOrSelection()):this.canvas&&this.canvas.requestRenderAll()}onKeyUp(e){!this.isEditing||this._copyDone||this.inCompositionMode?this._copyDone=!1:e.keyCode in this.ctrlKeysMapUp&&(e.ctrlKey||e.metaKey)&&(this[this.ctrlKeysMapUp[e.keyCode]](e),e.stopImmediatePropagation(),e.preventDefault(),this.canvas&&this.canvas.requestRenderAll())}onInput(n){let i=this.fromPaste,{value:a,selectionStart:o,selectionEnd:s}=this.hiddenTextarea;if(this.fromPaste=!1,n&&n.stopPropagation(),!this.isEditing)return;let c=()=>{this.updateFromTextArea(),this.fire(r),this.canvas&&(this.canvas.fire(`text:changed`,{target:this}),this.canvas.requestRenderAll())};if(this.hiddenTextarea.value===``)return this.styles={},void c();let l=this._splitTextIntoLines(a).graphemeText,u=this._text.length,d=l.length,f=this.selectionStart,p=this.selectionEnd,m=f!==p,h,g,_,v,y=d-u,b=this.fromStringToGraphemeSelection(o,s,a),x=f>b.selectionStart;m?(g=this._text.slice(f,p),y+=p-f):d<u&&(g=x?this._text.slice(p+y,p):this._text.slice(f,f-y));let S=l.slice(b.selectionEnd-y,b.selectionEnd);if(g&&g.length&&(S.length&&(h=this.getSelectionStyles(f,f+1,!1),h=S.map(()=>h[0])),m?(_=f,v=p):x?(_=p-g.length,v=p):(_=p,v=p+g.length),this.removeStyleFromTo(_,v)),S.length){let{copyPasteData:n}=t();i&&S.join(``)===n.copiedText&&!e.disableStyleCopyPaste&&(h=n.copiedTextStyle),this.insertNewStyleBlock(S,f,h)}c()}onCompositionStart(){this.inCompositionMode=!0}onCompositionEnd(){this.inCompositionMode=!1}onCompositionUpdate({target:e}){let{selectionStart:t,selectionEnd:n}=e;this.compositionStart=t,this.compositionEnd=n,this.updateTextareaPosition()}copy(){if(this.selectionStart===this.selectionEnd)return;let{copyPasteData:n}=t();n.copiedText=this.getSelectedText(),e.disableStyleCopyPaste?n.copiedTextStyle=void 0:n.copiedTextStyle=this.getSelectionStyles(this.selectionStart,this.selectionEnd,!0),this._copyDone=!0}paste(){this.fromPaste=!0}_getWidthBeforeCursor(e,t){let n,r=this._getLineLeftOffset(e);return t>0&&(n=this.__charBounds[e][t-1],r+=n.left+n.width),r}getDownCursorOffset(e,t){let n=this._getSelectionForOffset(e,t),r=this.get2DCursorLocation(n),i=r.lineIndex;if(i===this._textLines.length-1||e.metaKey||e.keyCode===34)return this._text.length-n;let a=r.charIndex,o=this._getWidthBeforeCursor(i,a),s=this._getIndexOnLine(i+1,o);return this._textLines[i].slice(a).length+s+1+this.missingNewlineOffset(i)}_getSelectionForOffset(e,t){return e.shiftKey&&this.selectionStart!==this.selectionEnd&&t?this.selectionEnd:this.selectionStart}getUpCursorOffset(e,t){let n=this._getSelectionForOffset(e,t),r=this.get2DCursorLocation(n),i=r.lineIndex;if(i===0||e.metaKey||e.keyCode===33)return-n;let a=r.charIndex,o=this._getWidthBeforeCursor(i,a),s=this._getIndexOnLine(i-1,o),c=this._textLines[i].slice(0,a),l=this.missingNewlineOffset(i-1);return-this._textLines[i-1].length+s-c.length+(1-l)}_getIndexOnLine(e,t){let n=this._textLines[e],r,i,a=this._getLineLeftOffset(e),o=0;for(let s=0,c=n.length;s<c;s++)if(r=this.__charBounds[e][s].width,a+=r,a>t){i=!0;let e=a-r,n=a,c=Math.abs(e-t);o=Math.abs(n-t)<c?s:s-1;break}return i||(o=n.length-1),o}moveCursorDown(e){this.selectionStart>=this._text.length&&this.selectionEnd>=this._text.length||this._moveCursorUpOrDown(`Down`,e)}moveCursorUp(e){this.selectionStart===0&&this.selectionEnd===0||this._moveCursorUpOrDown(`Up`,e)}_moveCursorUpOrDown(e,t){let n=this[`get${e}CursorOffset`](t,this._selectionDirection===a);if(t.shiftKey?this.moveCursorWithShift(n):this.moveCursorWithoutShift(n),n!==0){let e=this.text.length;this.selectionStart=s(0,this.selectionStart,e),this.selectionEnd=s(0,this.selectionEnd,e),this.abortCursorAnimation(),this.initDelayedCursor(),this._fireSelectionChanged(),this._updateTextarea()}}moveCursorWithShift(e){let t=this._selectionDirection===`left`?this.selectionStart+e:this.selectionEnd+e;return this.setSelectionStartEndWithShift(this.selectionStart,this.selectionEnd,t),e!==0}moveCursorWithoutShift(e){return e<0?(this.selectionStart+=e,this.selectionEnd=this.selectionStart):(this.selectionEnd+=e,this.selectionStart=this.selectionEnd),e!==0}moveCursorLeft(e){this.selectionStart===0&&this.selectionEnd===0||this._moveCursorLeftOrRight(`Left`,e)}_move(e,t,n){let r;if(e.altKey)r=this[`findWordBoundary${n}`](this[t]);else{if(!e.metaKey&&e.keyCode!==35&&e.keyCode!==36)return this[t]+=n===`Left`?-1:1,!0;r=this[`findLineBoundary${n}`](this[t])}return r!==void 0&&this[t]!==r&&(this[t]=r,!0)}_moveLeft(e,t){return this._move(e,t,`Left`)}_moveRight(e,t){return this._move(e,t,`Right`)}moveCursorLeftWithoutShift(e){let t=!0;return this._selectionDirection=i,this.selectionEnd===this.selectionStart&&this.selectionStart!==0&&(t=this._moveLeft(e,`selectionStart`)),this.selectionEnd=this.selectionStart,t}moveCursorLeftWithShift(e){return this._selectionDirection===`right`&&this.selectionStart!==this.selectionEnd?this._moveLeft(e,`selectionEnd`):this.selectionStart===0?void 0:(this._selectionDirection=i,this._moveLeft(e,`selectionStart`))}moveCursorRight(e){this.selectionStart>=this._text.length&&this.selectionEnd>=this._text.length||this._moveCursorLeftOrRight(`Right`,e)}_moveCursorLeftOrRight(e,t){let n=`moveCursor${e}${t.shiftKey?`WithShift`:`WithoutShift`}`;this._currentCursorOpacity=1,this[n](t)&&(this.abortCursorAnimation(),this.initDelayedCursor(),this._fireSelectionChanged(),this._updateTextarea())}moveCursorRightWithShift(e){return this._selectionDirection===`left`&&this.selectionStart!==this.selectionEnd?this._moveRight(e,`selectionStart`):this.selectionEnd===this._text.length?void 0:(this._selectionDirection=a,this._moveRight(e,`selectionEnd`))}moveCursorRightWithoutShift(e){let t=!0;return this._selectionDirection=a,this.selectionStart===this.selectionEnd?(t=this._moveRight(e,`selectionStart`),this.selectionEnd=this.selectionStart):this.selectionStart=this.selectionEnd,t}};export{l as ITextKeyBehavior};
//# sourceMappingURL=ITextKeyBehavior.min.mjs.map