mirror of
https://github.com/flynx/ImageGrid.git
synced 2025-10-30 19:00:09 +00:00
568 lines
13 KiB
JavaScript
Executable File
568 lines
13 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 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 a search/filter field...
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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 edeting 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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'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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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.filter($(this).text())
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}))
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// fill the children list...
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this.list(path)
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.forEach(function(e){
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l.append($('<div>')
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.click(function(){
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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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// internal actions...
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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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// - regex
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// XXX sort:
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// - as-is
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// - best match
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// XXX add deep-mode filtering...
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// if '/' is in the pattern then we list down and combine paths...
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filter: function(pattern, non_matched, sort){
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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 highlighing...
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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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var l = browser.find('.list>div:not(disabled)')
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l.each(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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e
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.addClass('filtered-out')
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.removeClass('selected')
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} else {
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e.html(t.replace(pattern, pattern.bold()))
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.removeClass('filtered-out')
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}
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})
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}
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return this
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},
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// XXX start search/filter...
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// - set content editable
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// - triger filterig on modified
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// - disable nav in favor of editing
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// - enter/blur to exit edit mode
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// - esc to cancel and reset
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// XXX BUG: when starting with '/' key the '/' gets appended to the
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// field...
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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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// XXX
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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.filter('*')
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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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// -> elem
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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(<elem>)
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// -> elem
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//
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// .select(<elem>)
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// -> elem
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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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//
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//
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// XXX revise return values...
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// XXX Q: should this trigger a "select" event???
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// XXX on string/regexp mismatch this will select the first, is this correct???
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// XXX handle scrollTop to show the selected element...
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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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elem = elem == 0 ? 'first' : elem
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elem = elem || this.select('!')
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// if none selected get the first...
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elem = elem.length == 0 ? 'first' : elem
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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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return elems
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.filter('.selected')
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.removeClass('selected')
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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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// XXX on mismatch this will select the first, is this correct???
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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(browser.find(pattern)
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.filter(function(i, e){
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return $(e).text() == elem
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}), filtering)
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// regexp...
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// XXX on mismatch this will select the first, is this correct???
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} else if(elem.constructor === RegExp){
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return this.select(browser.find(pattern)
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.filter(function(i, e){
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return elem.test($(e).text())
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}), 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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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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// 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...
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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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var res = this.open(path)
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return res
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},
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// extension methods...
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// XXX this is wrong...
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// ...need to actually open something...
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open: function(path){
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path = path || this.path
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var m = this.options.list
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return m ? m.call(this, path) : path
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},
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list: function(path){
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path = path || this.path
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var m = this.options.list
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return m ? m.call(this, path) : []
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},
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isTraversable: null,
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// XXX need to get a container....
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// XXX setup instance events...
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__init__: function(parent, options){
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options = options || {}
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// merge options...
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var opts = Object.create(this.options)
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Object.keys(options).forEach(function(n){ opts[n] = options[n] })
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options = this.options = opts
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// build the dom...
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var dom = this.dom = this.constructor.make(options)
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// add keyboard handler...
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dom.keydown(
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keyboard.makeKeyboardHandler(
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this.keyboard,
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options.logKeys,
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this))
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// attach to parent...
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if(parent != null){
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parent.append(dom)
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}
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// load the initial state...
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this.update(this.path)
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},
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}
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/*
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var Browser =
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//module.Browser =
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object.makeConstructor('Browser',
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BrowserClassPrototype,
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BrowserPrototype)
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*/
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/**********************************************************************
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* vim:set ts=4 sw=4 : */
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