103 lines
4.2 KiB
JavaScript
103 lines
4.2 KiB
JavaScript
(function() {
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CodeMirror.simpleHint = function(editor, getHints, givenOptions) {
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// Determine effective options based on given values and defaults.
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var options = {}, defaults = CodeMirror.simpleHint.defaults;
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for (var opt in defaults)
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if (defaults.hasOwnProperty(opt))
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options[opt] = (givenOptions && givenOptions.hasOwnProperty(opt) ? givenOptions : defaults)[opt];
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function collectHints(previousToken) {
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// We want a single cursor position.
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if (editor.somethingSelected()) return;
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var tempToken = editor.getTokenAt(editor.getCursor());
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// Don't show completions if token has changed and the option is set.
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if (options.closeOnTokenChange && previousToken != null &&
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(tempToken.start != previousToken.start || tempToken.className != previousToken.className)) {
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return;
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}
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var result = getHints(editor);
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if (!result || !result.list.length) return;
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var completions = result.list;
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function insert(str) {
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editor.replaceRange(str, result.from, result.to);
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}
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// When there is only one completion, use it directly.
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if (options.completeSingle && completions.length == 1) {
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insert(completions[0]);
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return true;
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}
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// Build the select widget
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var complete = document.createElement("div");
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complete.className = "CodeMirror-completions";
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var sel = complete.appendChild(document.createElement("select"));
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// Opera doesn't move the selection when pressing up/down in a
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// multi-select, but it does properly support the size property on
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// single-selects, so no multi-select is necessary.
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if (!window.opera) sel.multiple = true;
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for (var i = 0; i < completions.length; ++i) {
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var opt = sel.appendChild(document.createElement("option"));
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opt.appendChild(document.createTextNode(completions[i]));
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}
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sel.firstChild.selected = true;
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sel.size = Math.min(10, completions.length);
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var pos = options.alignWithWord ? editor.charCoords(result.from) : editor.cursorCoords();
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complete.style.left = pos.x + "px";
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complete.style.top = pos.yBot + "px";
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document.body.appendChild(complete);
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// If we're at the edge of the screen, then we want the menu to appear on the left of the cursor.
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var winW = window.innerWidth || Math.max(document.body.offsetWidth, document.documentElement.offsetWidth);
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if(winW - pos.x < sel.clientWidth)
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complete.style.left = (pos.x - sel.clientWidth) + "px";
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// Hack to hide the scrollbar.
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if (completions.length <= 10)
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complete.style.width = (sel.clientWidth - 1) + "px";
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var done = false;
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function close() {
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if (done) return;
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done = true;
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complete.parentNode.removeChild(complete);
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}
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function pick() {
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insert(completions[sel.selectedIndex]);
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close();
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setTimeout(function(){editor.focus();}, 50);
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}
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CodeMirror.connect(sel, "blur", close);
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CodeMirror.connect(sel, "keydown", function(event) {
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var code = event.keyCode;
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// Enter
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if (code == 13) {CodeMirror.e_stop(event); pick();}
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// Escape
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else if (code == 27) {CodeMirror.e_stop(event); close(); editor.focus();}
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else if (code != 38 && code != 40 && code != 33 && code != 34 && !CodeMirror.isModifierKey(event)) {
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close(); editor.focus();
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// Pass the event to the CodeMirror instance so that it can handle things like backspace properly.
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editor.triggerOnKeyDown(event);
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// Don't show completions if the code is backspace and the option is set.
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if (!options.closeOnBackspace || code != 8) {
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setTimeout(function(){collectHints(tempToken);}, 50);
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}
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}
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});
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CodeMirror.connect(sel, "dblclick", pick);
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sel.focus();
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// Opera sometimes ignores focusing a freshly created node
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if (window.opera) setTimeout(function(){if (!done) sel.focus();}, 100);
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return true;
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}
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return collectHints();
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};
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CodeMirror.simpleHint.defaults = {
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closeOnBackspace: true,
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closeOnTokenChange: false,
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completeSingle: true,
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alignWithWord: true
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};
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})();
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