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https://github.com/flynx/ImageGrid.git
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reworked .get(..)...
Signed-off-by: Alex A. Naanou <alex.nanou@gmail.com>
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7f85fa4543
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@ -1000,6 +1000,14 @@ var BaseBrowserPrototype = {
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&& doNested()
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// do element...
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state.splice(state.length, 0,
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// NOTE: here we use:
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// [ func(..) ].flat()
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// to normalize the return value of func to an array
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// but this is not equivalent to:
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// x instanceof Array ? x : [x]
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// as it creates a new array instance in all cases
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// and this is less efficient, though in most cases
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// negligibly so...
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...[ func ?
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(func.call(that,
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...(inline ?
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@ -1200,6 +1208,8 @@ var BaseBrowserPrototype = {
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// {
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// // NOTE: generator order is significant as patterns are testen
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// // in order the generators are defined...
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// // NOTE: testGenerator(..) is called in the context of
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// // __search_test_generators__ (XXX ???)
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// // NOTE: <key> is only used for documentation...
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// <key>: testGenerator(..),
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//
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@ -1285,7 +1295,7 @@ var BaseBrowserPrototype = {
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options = args.shift() || {}
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var context = args.shift()
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// pattern -- normalize and pattern keywords...
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// pattern -- normalize and do pattern keywords...
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pattern = options.ignoreKeywords ?
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pattern
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: (pattern === 'all' || pattern == '*') ?
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@ -1299,13 +1309,11 @@ var BaseBrowserPrototype = {
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: pattern == 'focused' ?
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{focused: true}
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: pattern
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// normalize negative index...
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if(typeof(pattern) == typeof(123) && pattern < 0){
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pattern = -pattern - 1
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options.reverse = 'flat'
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}
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// normalize/build the test predicate...
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var test = (
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// all...
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@ -1319,7 +1327,6 @@ var BaseBrowserPrototype = {
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.reduce(function(res, get){
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return res
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|| get.call(this.__search_test_generators__, pattern) }, false) )
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// sanity check...
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if(!test){
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throw new Error(`.search(..): unknown pattern type: ${pattern}`) }
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@ -1331,7 +1338,7 @@ var BaseBrowserPrototype = {
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&& (test === true
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|| test.call(this, elem, i, path))) ?
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[ func ?
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func.call(this, elem, i, path)
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func.call(this, elem, i, path, stop)
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: elem ]
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: []
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return ((options.firstMatch
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@ -1349,18 +1356,18 @@ var BaseBrowserPrototype = {
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//
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// Get focused item...
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// .get()
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// .get('focused')
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// .get('focused'[, func])
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// -> item
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// -> undefined
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//
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// Get next/prev item relative to focused...
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// .get('prev'[, offset][, options])
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// .get('next'[, offset][, options])
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// .get('prev'[, offset][, func][, options])
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// .get('next'[, offset][, func][, options])
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// -> item
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// -> undefined
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//
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// Get first item matching pattern...
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// .get(pattern[, options])
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// .get(pattern[, func][, options])
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// -> item
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// -> undefined
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//
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@ -1372,6 +1379,8 @@ var BaseBrowserPrototype = {
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// first result only.
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//
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// XXX should we be able to get offset values relative to any match?
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// XXX add a callback...
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// XXX should we use .wald2(..) here???
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// XXX revise return value...
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get: function(pattern, options){
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var args = [...arguments]
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@ -1383,64 +1392,54 @@ var BaseBrowserPrototype = {
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&& typeof(args[0]) == typeof(123) ?
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args.shift()
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: 1
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var func = args[0] instanceof Function ?
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args.shift()
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// XXX return format...
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: function(e, i, p){ return e }
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options = args.pop() || {}
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// sanity checks...
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if(offset <= 0){
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throw new Error(`.get(..): offset must be a positive number, got: ${offset}.`)
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}
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throw new Error(`.get(..): offset must be a positive number, got: ${offset}.`) }
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// NOTE: we do not care about return values here as we'll return
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// via stop(..)...
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var res = []
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var Stop = new Error('.get(..): found match.')
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try {
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return [
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// next + offset...
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pattern == 'next' ?
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this.search(true,
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function(elem, i, path){
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function(elem, i, path, stop){
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if(elem.focused == true){
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res = offset + 1
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// get the offset item...
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} else if(res <= 0){
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res = [elem, i, path]
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throw Stop
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stop([func(elem, i, path)])
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}
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// countdown to offset...
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res = typeof(res) == typeof(123) ?
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res - 1
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: res
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})
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: res },
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options)
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// prev + offset...
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: pattern == 'prev' ?
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this.search(true,
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function(elem, i, path){
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if(elem.focused == true){
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res = res.length >= offset ?
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function(elem, i, path, stop){
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elem.focused == true
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&& stop([func(res.length >= offset ?
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res[0]
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: undefined
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throw Stop
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}
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: undefined)])
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// buffer the previous offset items...
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res.push([elem, i, path])
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res.push((elem, i, path))
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res.length > offset
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&& res.shift()
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})
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&& res.shift() },
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options)
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// base case -> get first match...
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: this.search(pattern,
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function(elem, i, path){
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res = [elem, i, path]
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throw Stop
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})
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} catch(e){
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// pass on other errors...
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if(e !== Stop){
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throw e
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}
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return res
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}
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},
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function(elem, i, path, stop){
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stop([func(elem, i, path)]) },
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options) ].flat()[0] },
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// XXX BROKEN...
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