BUGFIX: Handle text input in keypress handler for I18n
While the `keydown` handler is the only way of reliably catching special keys, for textual input `keypress` is preferable, as it can handle thing like parens without having to hardcode a keyboard. I moved that code and in the process converted some magic numbers to constants - mostly so I can read stuff better.
This commit is contained in:
Martin Meyerhoff
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7a0b1c1dff
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3fd8fc97a2
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@ -6,44 +6,26 @@
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export var CANCELLED_STATUS = "__CANCELLED";
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var shiftMap = [];
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shiftMap[192] = "~";
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shiftMap[49] = "!";
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shiftMap[50] = "@";
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shiftMap[51] = "#";
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shiftMap[52] = "$";
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shiftMap[53] = "%";
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shiftMap[54] = "^";
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shiftMap[55] = "&";
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shiftMap[56] = "*";
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shiftMap[57] = "(";
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shiftMap[48] = ")";
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shiftMap[109] = "_";
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shiftMap[107] = "+";
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shiftMap[219] = "{";
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shiftMap[221] = "}";
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shiftMap[220] = "|";
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shiftMap[59] = ":";
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shiftMap[222] = "\"";
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shiftMap[188] = "<";
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shiftMap[190] = ">";
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shiftMap[191] = "?";
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shiftMap[32] = " ";
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function mapKeyPressToActualCharacter(isShiftKey, characterCode) {
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if ( characterCode === 27 || characterCode === 8 || characterCode === 9 || characterCode === 20 || characterCode === 16 || characterCode === 17 || characterCode === 91 || characterCode === 13 || characterCode === 92 || characterCode === 18 ) { return false; }
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// Lookup non-letter keypress while holding shift
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if (isShiftKey && ( characterCode < 65 || characterCode > 90 )) {
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return shiftMap[characterCode];
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}
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var stringValue = String.fromCharCode(characterCode);
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if ( !isShiftKey ) {
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stringValue = stringValue.toLowerCase();
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}
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return stringValue;
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}
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var Keys = {
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BackSpace: 8,
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Tab: 9,
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Enter: 13,
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Shift: 16,
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Ctrl: 17,
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Alt: 18,
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Esc: 27,
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Space: 32,
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LeftWindows: 91,
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RightWindows: 92,
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PageUp: 33,
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PageDown: 34,
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End: 35,
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Home: 36,
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LeftArrow: 37,
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UpArrow: 38,
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RightArrow: 39,
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DownArrow: 40,
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};
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export default function(options) {
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var autocompletePlugin = this;
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@ -78,9 +60,14 @@ export default function(options) {
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}
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div = null;
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completeStart = null;
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completeEnd = null;
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autocompleteOptions = null;
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};
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var autoCompleting = function () {
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return completeStart !== null;
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};
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var addInputSelectedItem = function(item) {
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var transformed,
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transformedItem = item;
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@ -131,7 +118,7 @@ export default function(options) {
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term = options.transformComplete(term);
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}
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var text = me.val();
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text = text.substring(0, completeStart) + (options.key || "") + term + ' ' + text.substring(completeEnd + 1, text.length);
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text = text.substring(0, completeStart) + term + ' ' + text.substring(completeEnd, text.length);
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me.val(text);
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Discourse.Utilities.setCaretPosition(me[0], completeStart + 1 + term.length);
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}
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@ -264,24 +251,37 @@ export default function(options) {
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closeAutocomplete();
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});
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var getTerm = function() {
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return me.val().slice(completeStart, completeEnd);
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};
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$(this).keypress(function(e) {
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var term, key = (e.char || String.fromCharCode(e.charCode));
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if (!options.key) return;
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// if we just started with an options.key, set start and end.
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if (key === options.key && !autoCompleting()) {
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completeStart = completeEnd = Discourse.Utilities.caretPosition(me[0]) + 1;
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}
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// keep hunting backwards till you hit a
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if (e.which === options.key.charCodeAt(0)) {
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var caretPosition = Discourse.Utilities.caretPosition(me[0]);
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var prevChar = me.val().charAt(caretPosition - 1);
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if (!prevChar || /\s/.test(prevChar)) {
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completeStart = completeEnd = caretPosition;
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if (!options.key) {
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completeStart = 0;
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completeEnd = Discourse.Utilities.caretPosition(me[0]);
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}
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if (autoCompleting()) {
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if ((completeStart === completeEnd) && key === options.key) {
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updateAutoComplete(options.dataSource(""));
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} else {
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term = getTerm() + key;
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completeEnd += 1;
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updateAutoComplete(options.dataSource(term));
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}
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return true;
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}
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});
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$(this).keydown(function(e) {
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var c, caretPosition, i, initial, next, prev, prevIsGood, stopFound, term, total, userToComplete;
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var caretPosition, i, term, total, userToComplete;
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if(options.allowAny){
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// saves us wiring up a change event as well, keypress is while its pressed
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@ -301,57 +301,38 @@ export default function(options) {
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},50);
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}
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if (!options.key) {
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completeStart = 0;
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}
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if (e.which === 16) return;
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if ((completeStart === null) && e.which === 8 && options.key) {
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c = Discourse.Utilities.caretPosition(me[0]);
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next = me[0].value[c];
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c -= 1;
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initial = c;
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prevIsGood = true;
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while (prevIsGood && c >= 0) {
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c -= 1;
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prev = me[0].value[c];
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stopFound = prev === options.key;
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if (stopFound) {
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prev = me[0].value[c - 1];
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if (!prev || /\s/.test(prev)) {
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completeStart = c;
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caretPosition = completeEnd = initial;
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term = me[0].value.substring(c + 1, initial);
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updateAutoComplete(options.dataSource(term));
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return true;
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}
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// Handle Backspacing into stuff
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if ((!autoCompleting()) && e.which === Keys.BackSpace && options.key) {
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var c = Discourse.Utilities.caretPosition(me[0]),
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last, first,
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text = me[0].value;
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// search backwards until you find the last letter of the word
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while (/[\s]/.test(text[c]) && c >= 0) { c--; }
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last = c;
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// search further until you find the first letter of the word
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while (/[\S]/.test(text[c]) && c >= 0) { c--; }
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first = c + 1;
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if (text[first] === options.key) {
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completeStart = first + 1;
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completeEnd = (options.key === ":" ? last - 1 : last);
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if (completeEnd >= completeStart) {
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updateAutoComplete(options.dataSource(getTerm()));
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}
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prevIsGood = /[a-zA-Z\.]/.test(prev);
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return true;
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}
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}
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// ESC
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if (e.which === 27) {
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if (completeStart !== null) {
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closeAutocomplete();
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return false;
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}
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return true;
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}
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if (completeStart !== null) {
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caretPosition = Discourse.Utilities.caretPosition(me[0]);
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// If we've backspaced past the beginning, cancel unless no key
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if (caretPosition <= completeStart && options.key) {
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closeAutocomplete();
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return false;
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}
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if (autoCompleting()) {
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// Keyboard codes! So 80's.
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switch (e.which) {
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case 13:
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case 39:
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case 9:
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case Keys.Esc:
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closeAutocomplete();
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return false;
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case Keys.Enter:
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case Keys.RightArrow:
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case Keys.Tab:
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if (!autocompleteOptions) return true;
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if (selectedOption >= 0 && (userToComplete = autocompleteOptions[selectedOption])) {
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completeTerm(userToComplete);
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@ -361,14 +342,14 @@ export default function(options) {
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}
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e.stopImmediatePropagation();
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return false;
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case 38:
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case Keys.UpArrow:
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selectedOption = selectedOption - 1;
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if (selectedOption < 0) {
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selectedOption = 0;
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}
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markSelected();
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return false;
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case 40:
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case Keys.DownArrow:
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total = autocompleteOptions.length;
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selectedOption = selectedOption + 1;
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if (selectedOption >= total) {
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@ -379,12 +360,11 @@ export default function(options) {
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}
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markSelected();
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return false;
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default:
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// otherwise they're typing - let's search for it!
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case Keys.BackSpace:
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caretPosition = Discourse.Utilities.caretPosition(me[0]) - 1;
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completeEnd = caretPosition;
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if (e.which === 8) {
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caretPosition--;
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}
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if (caretPosition < 0) {
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closeAutocomplete();
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if (isInput) {
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@ -395,23 +375,17 @@ export default function(options) {
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}
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return false;
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}
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term = me.val().substring(completeStart + (options.key ? 1 : 0), caretPosition);
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if (e.which >= 48 && e.which <= 90) {
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term += mapKeyPressToActualCharacter(e.shiftKey, e.which);
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} else if (e.which === 187) {
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term += "+";
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} else if (e.which === 189) {
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term += (e.shiftKey) ? "_" : "-";
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} else if (e.which === 220) {
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term += (e.shiftKey) ? "|" : "]";
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} else if (e.which === 222) {
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term += (e.shiftKey) ? "\"" : "'";
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} else if (e.which !== 8) {
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term += ",";
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if (completeEnd < completeStart) {
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closeAutocomplete();
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return true;
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}
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term = getTerm();
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updateAutoComplete(options.dataSource(term));
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return true;
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default:
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return true;
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}
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}
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});
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