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Diffstat (limited to 'vendors/dokuwiki/lib/scripts/textselection.js')
| -rw-r--r-- | vendors/dokuwiki/lib/scripts/textselection.js | 226 |
1 files changed, 0 insertions, 226 deletions
diff --git a/vendors/dokuwiki/lib/scripts/textselection.js b/vendors/dokuwiki/lib/scripts/textselection.js deleted file mode 100644 index 39dd4cc41..000000000 --- a/vendors/dokuwiki/lib/scripts/textselection.js +++ /dev/null @@ -1,226 +0,0 @@ -/** - * Text selection related functions. - */ - -/** - * selection prototype - * - * Object that capsulates the selection in a textarea. Returned by getSelection. - * - * @author Andreas Gohr <andi@splitbrain.org> - */ -function selection_class(){ - this.start = 0; - this.end = 0; - this.obj = null; - this.rangeCopy = null; - this.scroll = 0; - this.fix = 0; - - this.getLength = function(){ - return this.end - this.start; - }; - - this.getText = function(){ - if(!this.obj) return ''; - return this.obj.value.substring(this.start,this.end); - } -} - -/** - * Get current selection/cursor position in a given textArea - * - * @link http://groups.drupal.org/node/1210 - * @author Andreas Gohr <andi@splitbrain.org> - * @link http://linebyline.blogspot.com/2006/11/textarea-cursor-position-in-internet.html - * @returns object - a selection object - */ -function getSelection(textArea) { - var sel = new selection_class(); - - sel.obj = textArea; - sel.start = textArea.value.length; - sel.end = textArea.value.length; - - textArea.focus(); - if(document.getSelection) { // Mozilla et al. - sel.start = textArea.selectionStart; - sel.end = textArea.selectionEnd; - sel.scroll = textArea.scrollTop; - } else if(document.selection) { // MSIE - /* - * This huge lump of code is neccessary to work around two MSIE bugs: - * - * 1. Selections trim newlines at the end of the code - * 2. Selections count newlines as two characters - */ - - // The current selection - sel.rangeCopy = document.selection.createRange().duplicate(); - - var before_range = document.body.createTextRange(); - before_range.moveToElementText(textArea); // Selects all the text - before_range.setEndPoint("EndToStart", sel.rangeCopy); // Moves the end where we need it - - var before_finished = false, selection_finished = false; - var before_text, selection_text; - // Load the text values we need to compare - before_text = before_range.text; - selection_text = sel.rangeCopy.text; - - sel.start = before_text.length; - sel.end = sel.start + selection_text.length; - - // Check each range for trimmed newlines by shrinking the range by 1 character and seeing - // if the text property has changed. If it has not changed then we know that IE has trimmed - // a \r\n from the end. - do { - if (!before_finished) { - if (before_range.compareEndPoints("StartToEnd", before_range) == 0) { - before_finished = true; - } else { - before_range.moveEnd("character", -1); - if (before_range.text == before_text) { - sel.start += 2; - sel.end += 2; - } else { - before_finished = true; - } - } - } - if (!selection_finished) { - if (sel.rangeCopy.compareEndPoints("StartToEnd", sel.rangeCopy) == 0) { - selection_finished = true; - } else { - sel.rangeCopy.moveEnd("character", -1); - if (sel.rangeCopy.text == selection_text) { - sel.end += 2; - } else { - selection_finished = true; - } - } - } - } while ((!before_finished || !selection_finished)); - - - // count number of newlines in str to work around stupid IE selection bug - var countNL = function(str) { - var m = str.split("\r\n"); - if (!m || !m.length) return 0; - return m.length-1; - }; - sel.fix = countNL(sel.obj.value.substring(0,sel.start)); - - } - return sel; -} - -/** - * Set the selection - * - * You need to get a selection object via getSelection() first, then modify the - * start and end properties and pass it back to this function. - * - * @link http://groups.drupal.org/node/1210 - * @author Andreas Gohr <andi@splitbrain.org> - * @param object selection - a selection object as returned by getSelection() - */ -function setSelection(selection){ - if(document.getSelection){ // FF - // what a pleasure in FF ;) - selection.obj.setSelectionRange(selection.start,selection.end); - if(selection.scroll) selection.obj.scrollTop = selection.scroll; - } else if(document.selection) { // IE - selection.rangeCopy.collapse(true); - selection.rangeCopy.moveStart('character',selection.start - selection.fix); - selection.rangeCopy.moveEnd('character',selection.end - selection.start); - selection.rangeCopy.select(); - } -} - -/** - * Inserts the given text at the current cursor position or replaces the current - * selection - * - * @author Andreas Gohr <andi@splitbrain.org> - * @param string text - the new text to be pasted - * @param objct selecttion - selection object returned by getSelection - * @param int opts.startofs - number of charcters at the start to skip from new selection - * @param int opts.endofs - number of characters at the end to skip from new selection - * @param bool opts.nosel - set true if new text should not be selected - */ -function pasteText(selection,text,opts){ - if(!opts) opts = {}; - // replace the content - - selection.obj.value = - selection.obj.value.substring(0, selection.start) + text + - selection.obj.value.substring(selection.end, selection.obj.value.length); - - // set new selection - selection.end = selection.start + text.length; - - // modify the new selection if wanted - if(opts.startofs) selection.start += opts.startofs; - if(opts.endofs) selection.end -= opts.endofs; - - // no selection wanted? set cursor to end position - if(opts.nosel) selection.start = selection.end; - - setSelection(selection); -} - - -/** - * Format selection - * - * Apply tagOpen/tagClose to selection in textarea, use sampleText instead - * of selection if there is none. - * - * @author Andreas Gohr <andi@splitbrain.org> - */ -function insertTags(textAreaID, tagOpen, tagClose, sampleText){ - var txtarea = DOKUid(textAreaID); - - var selection = getSelection(txtarea); - var text = selection.getText(); - var opts; - - // don't include trailing space in selection - if(text.charAt(text.length - 1) == ' '){ - selection.end--; - text = selection.getText(); - } - - if(!text){ - // nothing selected, use the sample text and select it - text = sampleText; - opts = { - startofs: tagOpen.length, - endofs: tagClose.length - }; - }else{ - // place cursor at the end - opts = { - nosel: true - }; - } - - // surround with tags - text = tagOpen + text + tagClose; - - // do it - pasteText(selection,text,opts); -} - -/** - * Wraps around pasteText() for backward compatibility - * - * @author Andreas Gohr <andi@splitbrain.org> - */ -function insertAtCarret(textAreaID, text){ - var txtarea = DOKUid(textAreaID); - var selection = getSelection(txtarea); - pasteText(selection,text,{nosel: true}); -} - |