smrealms /
smr
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| Conditions | 13 |
| Total Lines | 60 |
| Code Lines | 31 |
| Lines | 0 |
| Ratio | 0 % |
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Small methods make your code easier to understand, in particular if combined with a good name. Besides, if your method is small, finding a good name is usually much easier.
For example, if you find yourself adding comments to a method's body, this is usually a good sign to extract the commented part to a new method, and use the comment as a starting point when coming up with a good name for this new method.
Commonly applied refactorings include:
If many parameters/temporary variables are present:
Complex classes like jquery.hotkeys.js ➔ keyHandler often do a lot of different things. To break such a class down, we need to identify a cohesive component within that class. A common approach to find such a component is to look for fields/methods that share the same prefixes, or suffixes.
Once you have determined the fields that belong together, you can apply the Extract Class refactoring. If the component makes sense as a sub-class, Extract Subclass is also a candidate, and is often faster.
| 1 | /* |
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| 35 | function keyHandler( handleObj ) { |
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| 36 | // Only care when a possible input has been specified |
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| 37 | if ( typeof handleObj.data !== "string" ) { |
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| 38 | return; |
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| 39 | } |
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| 40 | |||
| 41 | var origHandler = handleObj.handler, |
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| 42 | keys = handleObj.data.toLowerCase().split(" "), |
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| 43 | textAcceptingInputTypes = ["text", "password", "number", "email", "url", "range", "date", "month", "week", "time", "datetime", "datetime-local", "search", "color", "tel"]; |
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| 44 | |||
| 45 | handleObj.handler = function( event ) { |
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| 46 | // Don't fire in text-accepting inputs that we didn't directly bind to |
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| 47 | if ( this !== event.target && (/textarea|select/i.test( event.target.nodeName ) || |
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| 48 | jQuery.inArray(event.target.type, textAcceptingInputTypes) > -1 ) ) { |
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| 49 | return; |
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|
Comprehensibility
Best Practice
introduced
by
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| 50 | } |
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| 51 | |||
| 52 | // Keypress represents characters, not special keys |
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| 53 | var special = event.type !== "keypress" && jQuery.hotkeys.specialKeys[ event.which ], |
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| 54 | character = String.fromCharCode( event.which ).toLowerCase(), |
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| 55 | key, modif = "", possible = {}; |
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| 56 | |||
| 57 | // check combinations (alt|ctrl|shift+anything) |
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| 58 | if ( event.altKey && special !== "alt" ) { |
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| 59 | modif += "alt+"; |
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| 60 | } |
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| 61 | |||
| 62 | if ( event.ctrlKey && special !== "ctrl" ) { |
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| 63 | modif += "ctrl+"; |
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| 64 | } |
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| 65 | |||
| 66 | // TODO: Need to make sure this works consistently across platforms |
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| 67 | if ( event.metaKey && !event.ctrlKey && special !== "meta" ) { |
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| 68 | modif += "meta+"; |
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| 69 | } |
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| 70 | |||
| 71 | if ( event.shiftKey && special !== "shift" ) { |
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| 72 | modif += "shift+"; |
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| 73 | } |
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| 74 | |||
| 75 | if ( special ) { |
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| 76 | possible[ modif + special ] = true; |
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| 77 | |||
| 78 | } else { |
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| 79 | possible[ modif + character ] = true; |
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| 80 | possible[ modif + jQuery.hotkeys.shiftNums[ character ] ] = true; |
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| 81 | |||
| 82 | // "$" can be triggered as "Shift+4" or "Shift+$" or just "$" |
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| 83 | if ( modif === "shift+" ) { |
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| 84 | possible[ jQuery.hotkeys.shiftNums[ character ] ] = true; |
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| 85 | } |
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| 86 | } |
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| 87 | |||
| 88 | for ( var i = 0, l = keys.length; i < l; i++ ) { |
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| 89 | if ( possible[ keys[i] ] ) { |
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| 90 | return origHandler.apply( this, arguments ); |
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| 91 | } |
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| 92 | } |
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| 93 | }; |
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| 94 | } |
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| 95 | |||
| 100 | })( jQuery ); |
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