mirror of
https://github.com/flynx/ImageGrid.git
synced 2025-10-30 19:00:09 +00:00
685 lines
16 KiB
JavaScript
Executable File
685 lines
16 KiB
JavaScript
Executable File
/**********************************************************************
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*
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*
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*
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**********************************************************************/
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//var DEBUG = DEBUG != null ? DEBUG : true
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/*********************************************************************/
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// XXX add a hook to render the content of an element...
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// XXX NOTE: the widget itself does not need a title, that's the job for
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// a container widget (dialog, field, ...)
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// ...it can be implemented trivially via an attribute and a :before
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// CSS class...
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var BrowserClassPrototype = {
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// construct the dom...
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make: function(options){
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var browser = $('<div>')
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.addClass('browse')
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// make thie widget focusable...
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// NOTE: tabindex 0 means automatic tab indexing and -1 means
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// focusable bot not tabable...
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//.attr('tabindex', -1)
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.attr('tabindex', 0)
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// focus the widget if something inside is clicked...
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.click(function(){
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$(this).focus()
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})
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if(options.path == null || options.show_path){
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browser
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.append($('<div>')
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.addClass('v-block path'))
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}
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browser
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.append($('<div>')
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.addClass('v-block list'))
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return browser
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},
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}
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// XXX need to scroll only the list, keeping the path always in view...
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// XXX need to handle long paths -- smart shortening or auto scroll...
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// XXX Q: should we make a base list dialog and build this on that or
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// simplify this to implement a list (removing the path and disbling
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// traversal)??
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// XXX need base events:
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// - open
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// - update
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// - select (???)
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// XXX add "current selection" to the path...
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var BrowserPrototype = {
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dom: null,
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// option defaults and doc...
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//
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// XXX add enable/disable filter option...
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options: {
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//path: null,
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//show_path: null,
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// handle keys that are not bound...
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//
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// NOTE: to disable, set ot undefined.
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logKeys: function(k){ window.DEBUG && console.log(k) },
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},
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// XXX this should prevent event handler deligation...
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keyboard: {
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// filter mappings...
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Filter: {
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pattern: '.browse .path div.cur[contenteditable]',
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// keep text editing action from affecting the seelction...
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ignore: [
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'Backspace',
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'Left',
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'Right',
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'Home',
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'End',
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'Enter',
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'Esc',
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'/',
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],
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Enter: 'action!',
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Esc: 'stopFilter!',
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},
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General: {
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pattern: '.browse',
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Up: 'prev!',
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Backspace: 'Up',
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Down: 'next!',
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Left: 'pop',
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Right: 'push',
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Home: 'select!: "first"',
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End: 'select!: "last"',
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// XXX add page up and page down...
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// XXX
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// XXX ctrl-Left to go to root/base/home
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// XXX
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Enter: 'action',
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Esc: 'close',
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'/': 'startFilter!',
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},
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},
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// base api...
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// NOTE: to avoid duplicating and syncing data, the actual path is
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// stored in DOM...
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// XXX does the path includes the currently selected element?
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get path(){
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var skip = false
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return this.dom.find('.path .dir:not(.cur)')
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.map(function(i, e){ return $(e).text() })
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.toArray()
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},
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set path(value){
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// XXX normalize path...
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return this.update(value)
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},
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// update path...
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// - build the path
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// - build the element list
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//
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// XXX trigger an "update" event...
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update: function(path){
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path = path || this.path
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var browser = this.dom
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var that = this
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var p = browser.find('.path').empty()
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var l = browser.find('.list').empty()
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var c = []
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// fill the path field...
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path.forEach(function(e){
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c.push(e)
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var cur = c.slice()
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p.append($('<div>')
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.addClass('dir')
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.click(function(){
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that
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.update(cur.slice(0, -1))
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.select('"'+cur.pop()+'"')
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})
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.text(e))
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})
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// add current selction indicator...
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p.append($('<div>')
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.addClass('dir cur')
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.click(function(){
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that.startFilter()
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//that.update(path.concat($(this).text()))
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// XXX HACK: prevents the field from bluring when clicked...
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// ...need to find a better way...
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that._hold_blur = true
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setTimeout(function(){ delete that._hold_blur }, 20)
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})
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// XXX for some reason this gets triggered when clicking ano
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// is not triggered when entering via '/'
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.on('blur', function(){
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// XXX HACK: prevents the field from bluring when clicked...
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// ...need to find a better way...
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if(!that._hold_blur){
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that.stopFilter()
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}
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//that.stopFilter()
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})
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.keyup(function(){
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that.showFiltered($(this).text())
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}))
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// fill the children list...
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this.list(path)
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.forEach(function(e){
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l.append($('<div>')
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.click(function(){
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// handle clicks ONLY when not disabled...
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if(!$(this).hasClass('disabled')){
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that.update(that.path.concat([$(this).text()]))
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}
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})
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.text(e))
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})
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return this
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},
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// Filter the item list...
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//
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// General signature...
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// .filter(<pattern>[, <rejected-handler>][, <ignore-disabled>])
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// -> elements
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//
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//
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// Get all elements...
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// .filter()
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// .filter('*')
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// -> all elements
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//
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// Get all elements containing a string...
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// .filter(<string>)
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// -> elements
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//
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// Get all elements matching a regexp...
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// .filter(<regexp>)
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// -> elements
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//
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// Filter the elements via a function...
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// .filter(<function>)
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// -> elements
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//
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//
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// If <rejected-handler> function is passed it will get called with
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// every element that was rejected by the predicate / not matching
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// the pattern.
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//
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// By default, <ignore-disabled> is false, thus this will ignore
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// disabled elements. If <ignore_disabled> is false then disabled
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// elements will be searched too.
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//
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//
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// XXX pattern modes:
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// - lazy match
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// abc -> *abc* -> ^.*abc.*$
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// ab cd -> *ab*cd* -> ^.*ab.*cd.*$
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// - glob
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// XXX need to support glob / nested patterns...
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// ..things like /**/a*/*moo/
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// XXX should we unwrap the elements to be more compatible with
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// jQuery .filter(..)?
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filter: function(pattern, a, b){
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pattern = pattern || '*'
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var ignore_disabled = typeof(a) == typeof(true) ? a : b
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ignore_disabled = ignore_disabled == null ? true : ignore_disabled
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var rejected = typeof(a) == typeof(true) ? null : a
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var that = this
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var browser = this.dom
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var elems = browser.find('.list>div' + (ignore_disabled ? ':not(disabled)' : ''))
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if(pattern == '*'){
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return elems
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}
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// function...
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if(typeof(pattern) == typeof(function(){})){
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var filter = function(i, e){
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if(!pattern.call(e, i, e)){
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if(rejected){
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rejected.call(e, i, e)
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}
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return false
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}
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return true
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}
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// regexp...
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} else if(typeof(pattern) == typeof(/regexp/)){
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var filter = function(i, e){
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if(!pattern.test($(e).text())){
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if(rejected){
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rejected.call(e, i, e)
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}
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return false
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}
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return true
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}
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// string...
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// XXX support glob...
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} else if(typeof(pattern) == typeof('str')){
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var filter = function(i, e){
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e = $(e)
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var t = e.text()
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var i = t.search(pattern)
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if(!(i >= 0)){
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if(rejected){
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rejected.call(e, i, e)
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}
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return false
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}
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return true
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}
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}
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return elems.filter(filter)
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},
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// internal actions...
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// NOTE: this uses .filter(..) for actual filtering...
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// XXX revise API...
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showFiltered: function(pattern){
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var that = this
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var browser = this.dom
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// show all...
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if(pattern == null || pattern.trim() == '*'){
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browser.find('.filtered-out')
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.removeClass('filtered-out')
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// clear the highlighting...
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browser.find('.list b')
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.replaceWith(function() { return this.innerHTML })
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// basic filter...
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} else {
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this.filter(pattern,
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// rejected...
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function(i, e){
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e
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.addClass('filtered-out')
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.removeClass('selected')
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})
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// passed...
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.removeClass('filtered-out')
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.each(function(_, e){
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e = $(e)
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var t = e.text()
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e.html(t.replace(pattern, pattern.bold()))
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})
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}
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return this
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},
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// XXX make this a toggler... (???)
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startFilter: function(){
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var range = document.createRange()
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var selection = window.getSelection()
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var that = this
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var e = this.dom.find('.path .dir.cur')
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.text('')
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.attr('contenteditable', true)
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.focus()
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// place the cursor...
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range.setStart(e[0], 0)
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range.collapse(true)
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selection.removeAllRanges()
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selection.addRange(range)
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return this
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},
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stopFilter: function(){
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this.showFiltered('*')
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this.dom.find('.path .dir.cur')
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.text('')
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.removeAttr('contenteditable')
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this
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.focus()
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return this
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},
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get filtering(){
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return this.dom.find('.path .dir.cur[contenteditable]').length > 0
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},
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toggleFilterMode: function(){
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this.dom.toggleClass('show-filtered-out')
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return this
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},
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// Select a list element...
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//
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// Get selected element if it exists, otherwise select and return
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// the first...
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// .select()
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// -> elem
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//
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// Get selected element if it exists, null otherwise...
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// .select('!')
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// -> elem
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// -> $()
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//
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// Select first/last child
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// .select('first')
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// .select('last')
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// -> elem
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//
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// Select previous/next child
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// .select('prev')
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// .select('next')
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// -> elem
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//
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// Deselect
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// .select('none')
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// -> $()
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//
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// Select element by sequence number
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// NOTE: negative numbers count from the tail.
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// NOTE: overflowing selects the first/last element.
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// .select(<number>)
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// -> elem
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//
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// Select element by its text...
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// NOTE: if text matches one of the reserved commands above use
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// quotes to escape it...
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// .select('<text>')
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// .select("'<text>'")
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// .select('"<text>"')
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// -> elem
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//
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// Select element via a regular expression...
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// .select(<regexp>)
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// -> elem
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// -> $()
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//
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// Select jQuery object...
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// .select(<elem>)
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// -> elem
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// -> $()
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//
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// This will return a jQuery object.
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//
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// NOTE: if multiple matches occur this will select the first.
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// NOTE: 'none' will always return an empty jQuery object, to get
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// the selection state before deselecting use .select('!')
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// NOTE: this uses .filter(..) for string and regexp matching...
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//
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//
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// XXX Q: should this trigger a "select" event???
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// XXX the scroll handling might be a bit inaccurate...
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select: function(elem, filtering){
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var pattern = '.list div:not(.disabled):not(.filtered-out)'
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var browser = this.dom
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var elems = browser.find(pattern)
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filtering = filtering == null ? this.filtering : filtering
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if(elems.length == 0){
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return $()
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}
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// empty list/string selects none...
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elem = elem != null && elem.length == 0 ? 'none' : elem
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// 0 or no args (null) selects first...
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elem = elem == 0 ? 'first' : elem
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// no args -> either we start with the selected or the first...
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if(elem == null){
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var cur = this.select('!')
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elem = cur.length == 0 ? 'first' : cur
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}
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// first/last...
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if(elem == 'first' || elem == 'last'){
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return this.select(elems[elem](), filtering)
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// prev/next...
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} else if(elem == 'prev' || elem == 'next'){
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var to = this.select('!', filtering)[elem + 'All'](pattern).first()
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if(to.length == 0){
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return this.select(elem == 'prev' ? 'last' : 'first', filtering)
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}
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this.select('none', filtering)
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return this.select(to, filtering)
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// deselect...
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} else if(elem == 'none'){
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if(!filtering){
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browser.find('.path .dir.cur').empty()
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}
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elems
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.filter('.selected')
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.removeClass('selected')
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return $()
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// strict...
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} else if(elem == '!'){
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return elems.filter('.selected')
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// number...
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// NOTE: on overflow this will get the first/last element...
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} else if(typeof(elem) == typeof(123)){
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return this.select($(elems.slice(elem)[0] || elems.slice(-1)[0] ), filtering)
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// string...
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} else if(typeof(elem) == typeof('str')){
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if(/^'.*'$|^".*"$/.test(elem.trim())){
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elem = elem.trim().slice(1, -1)
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}
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return this.select(this.filter(elem).first(), filtering)
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// regexp...
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} else if(elem.constructor === RegExp){
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return this.select(this.filter(elem).first(), filtering)
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// element...
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} else {
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elem = $(elem).first()
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if(elem.length == 0){
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this.select(null, filtering)
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} else {
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this.select('none', filtering)
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if(!filtering){
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browser.find('.path .dir.cur').text(elem.text())
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}
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// handle scroll position...
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var p = elem.scrollParent()
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var S = p.scrollTop()
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var H = p.height()
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var h = elem.height()
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var t = elem.offset().top - p.offset().top
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var D = 3 * h
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// too low...
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if(t+h+D > H){
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p.scrollTop(S + (t+h+D) - H)
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// too high...
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} else if(t < D){
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p.scrollTop(S + t - D)
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}
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return elem.addClass('selected')
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}
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}
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},
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// Select next element...
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next: function(elem){
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if(elem != null){
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this.select(elem)
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}
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this.select('next')
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return this
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},
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// Select previous element...
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prev: function(elem){
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if(elem != null){
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this.select(elem)
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}
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this.select('prev')
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return this
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},
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// Push an element to path / go down one level...
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push: function(elem){
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var browser = this.dom
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var elem = this.select(elem || '!')
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// nothing selected, select first and exit...
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if(elem.length == 0){
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this.select()
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return this
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}
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var path = this.path
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path.push(elem.text())
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|
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// if not traversable call the action...
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if(this.isTraversable != null
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&& (this.isTraversable !== false
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|| ! this.isTraversable(path))){
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return this.action(path)
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}
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this.path = path
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this.select()
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return this
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},
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// Pop an element off the path / go up one level...
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pop: function(){
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var browser = this.dom
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var path = this.path
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var dir = path.pop()
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this.update(path)
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this.select('"'+dir+'"')
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return this
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},
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focus: function(){
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this.dom.focus()
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return this
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},
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// XXX think about the API...
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// XXX trigger an "open" event...
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action: function(){
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var elem = this.select('!')
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|
|
// nothing selected, select first and exit...
|
|
if(elem.length == 0){
|
|
this.select()
|
|
return this
|
|
}
|
|
|
|
var path = this.path
|
|
|
|
path.push(elem.text())
|
|
|
|
var res = this.open(path)
|
|
|
|
return res
|
|
},
|
|
|
|
// extension methods...
|
|
// XXX this is wrong...
|
|
// ...need to actually open something...
|
|
open: function(path){
|
|
path = path || this.path
|
|
var m = this.options.list
|
|
return m ? m.call(this, path) : path
|
|
},
|
|
list: function(path){
|
|
path = path || this.path
|
|
var m = this.options.list
|
|
return m ? m.call(this, path) : []
|
|
},
|
|
isTraversable: null,
|
|
|
|
// XXX need to get a container....
|
|
// XXX setup instance events...
|
|
__init__: function(parent, options){
|
|
options = options || {}
|
|
|
|
// merge options...
|
|
var opts = Object.create(this.options)
|
|
Object.keys(options).forEach(function(n){ opts[n] = options[n] })
|
|
options = this.options = opts
|
|
|
|
// build the dom...
|
|
var dom = this.dom = this.constructor.make(options)
|
|
|
|
// add keyboard handler...
|
|
dom.keydown(
|
|
keyboard.makeKeyboardHandler(
|
|
this.keyboard,
|
|
options.logKeys,
|
|
this))
|
|
|
|
// attach to parent...
|
|
if(parent != null){
|
|
parent.append(dom)
|
|
}
|
|
|
|
// load the initial state...
|
|
this.update(this.path)
|
|
},
|
|
}
|
|
|
|
|
|
/*
|
|
var Browser =
|
|
//module.Browser =
|
|
object.makeConstructor('Browser',
|
|
BrowserClassPrototype,
|
|
BrowserPrototype)
|
|
*/
|
|
|
|
|
|
|
|
|
|
|
|
|
|
/**********************************************************************
|
|
* vim:set ts=4 sw=4 : */
|