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phab/webroot/rsrc/js/application/differential/DifferentialInlineCommentEditor.js
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DifferentialInlineCommentEditor.js
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/**
* @provides differential-inline-comment-editor
* @requires javelin-dom
* javelin-workflow
* javelin-util
* javelin-stratcom
* javelin-install
*/
JX.install('DifferentialInlineCommentEditor', {
construct : function(uri) {
this._uri = uri;
},
events : ['done'],
members : {
_uri : null,
_undoText : null,
_skipOverInlineCommentRows : function(node) {
// TODO: Move this semantic information out of class names.
while (node && node.className.indexOf('inline') !== -1) {
node = node.nextSibling;
}
return node;
},
_buildRequestData : function() {
return {
op : this.getOperation(),
on_right : this.getOnRight(),
id : this.getID(),
number : this.getLineNumber(),
is_new : this.getIsNew(),
length : this.getLength(),
changeset : this.getChangeset(),
text : this.getText() || ''
};
},
_draw : function(content, exact_row) {
var row = this.getRow();
var table = this.getTable();
var target = exact_row ? row : this._skipOverInlineCommentRows(row);
return copyRows(table, content, target);
},
_removeUndoLink : function() {
var rows = JX.DifferentialInlineCommentEditor._undoRows;
if (rows) {
for (var ii = 0; ii < rows.length; ii++) {
JX.DOM.remove(rows[ii]);
}
}
},
_undo : function() {
this._removeUndoLink();
this.setText(this._undoText);
this.start();
},
_registerUndoListener : function() {
if (!JX.DifferentialInlineCommentEditor._activeEditor) {
JX.Stratcom.listen(
'click',
'differential-inline-comment-undo',
function(e) {
JX.DifferentialInlineCommentEditor._activeEditor._undo();
e.kill();
});
}
JX.DifferentialInlineCommentEditor._activeEditor = this;
},
_didCompleteWorkflow : function(response) {
var op = this.getOperation();
// We don't get any markup back if the user deletes a comment, or saves
// an empty comment (which effects a delete).
if (response.markup) {
this._draw(JX.$N('div', JX.$H(response.markup)));
}
// These operations remove the old row (edit adds a new row first).
var remove_old = (op == 'edit' || op == 'delete');
if (remove_old) {
JX.DOM.remove(this.getRow());
}
// Once the user saves something, get rid of the 'undo' option. A
// particular case where we need this is saving a delete, when we might
// otherwise leave around an 'undo' for an earlier edit to the same
// comment.
this._removeUndoLink();
JX.Stratcom.invoke('differential-inline-comment-update');
this.invoke('done');
},
_didCancelWorkflow : function() {
this.invoke('done');
var op = this.getOperation();
if (op == 'delete') {
// No undo for delete, we prompt the user explicitly.
return;
}
try {
var textarea = JX.DOM.find(
document.body, // TODO: use getDialogRootNode() when available
'textarea',
'differential-inline-comment-edit-textarea');
} catch (ex) {
if (ex !== JX.$.NotFound) {
throw ex;
}
// The close handler is called whenever the dialog closes, even if the
// user closed it by completing the workflow with "Save". The
// JX.Workflow API should probably be refined to allow programmatic
// distinction of close caused by 'cancel' vs 'submit'. Testing for
// presence of the textarea serves as a proxy for detecting a 'cancel'.
return;
}
var text = textarea.value;
// If the user hasn't edited the text (i.e., no change from original for
// 'edit' or no text for 'new' or 'reply'), don't offer them an undo.
if (text == (this.getOriginalText() || '')) {
return;
}
// Save the text so we can 'undo' back to it.
this._undoText = text;
var template = this.getOnRight()
? this.getTemplates().r
: this.getTemplates().l;
template = JX.$N('div', JX.$H(template));
// NOTE: Operation order matters here; we can't remove anything until
// after we draw the new rows because _draw uses the old rows to figure
// out where to place the comment.
// We use 'exact_row' to put the "undo" text directly above the affected
// comment.
var exact_row = true;
var rows = this._draw(template, exact_row);
this._removeUndoLink();
JX.DifferentialInlineCommentEditor._undoRows = rows;
},
start : function() {
this._registerUndoListener();
var data = this._buildRequestData();
var handler = JX.bind(this, this._didCompleteWorkflow);
var close_handler = JX.bind(this, this._didCancelWorkflow);
new JX.Workflow(this._uri, data)
.setHandler(handler)
.setCloseHandler(close_handler)
.start();
return this;
}
},
statics : {
/**
* Global refernece to the 'undo' rows currently rendered in the document.
*/
_undoRows : null,
/**
* Global listener for the 'undo' click associated with the currently
* displayed 'undo' link. When an editor is start()ed, it becomes the active
* editor.
*/
_activeEditor : null
},
properties : {
operation : null,
row : null,
table : null,
onRight : null,
ID : null,
lineNumber : null,
changeset : null,
length : null,
isNew : null,
text : null,
templates : null,
originalText : null
}
});
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